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JE Pistons

About JE Pistons

The origins of what we know today as JE Pistons can be traced back to 1912 and the Los Angeles foundry of William Jahns Sr. and his company W.H. Jahns. Employing the tagline, “Nothing but Pistons,” the W.H. Jahns company produced pistons and semi-finished pistons until 1948, when Jahns Sr. retired. Meanwhile, Jahns’ son, William “Uncle Bill” Jahns Jr., started and had been working on his company Jahns’ Racing Pistons since 1947. Shortly after, the business became Jahns’ Engineering Pistons, and was finally shortened to JE Pistons.

Through the following years, JE Pistons’ technology evolved, from mastering casting technology in the 60s to researching and implementing forging technology in the 70s. Numerical Controlled (NC) machines were introduced to manufacturing in the early 80s, which was quickly improved to the use of Computer Numerical Controlled (CNC) machines and a proprietary piston design and machining program in the mid-80s.

JE Pistons has continued to evolve their manufacturing processes, currently offering racing pistons either off the shelf or fully custom. JE pistons are all designed, forged, and machined in-house, allowing control over every step of the piston-making process. JE’s 7+ decades of experience in high-level racing has led to offering premium racing features, including full billet construction, EN plating, and purpose-designed coatings, to name a few to Porsche owners.

DISPLAYING 17 to 32 (of 91 products)
1 2 3 4 >>
Best Price
381248
Product Information
Product Information
JE Piston Set of 6.
Forged from 4032 Aluminium Alloy

jepiston

Fits:
Porsche 911 2.4ltr (10.0:1)

Engine Size : 2.4ltr
Bore Size: 85.00mm
Stroke: 70.40mm
Rod length: 127.80mm
Compression Distance : 33.90mm
Compression Ratio: 10.0:1
Dome/Dish Volume: 29.7cc
Oversize: 1.0mm
Material: 4032 Aluminium Alloy
Piston Weight (each): 379g

JE designs are specifically engineered for extreme applications up to and including professional competition. In this environment, the higher compression ratios, high boost or heavy nitrous use necessitate the higher tensile strength of 4032 and 2618 aluminium alloy, which has been optimized for aftermarket Nikasil cylinders. The JE Piston Porsche series now include low friction skirt coatings and are lighter than before, improving both performance and longevity.

The Dome/Dish require no deburring or preparation and feature a smooth flowing radii for excellent flame travel.

4032 Aluminium Alloy
Pistons manufactured from 4032 wrought aluminium alloy are designed for high performance applications where a strong and quiet piston is required. These pistons require less initial piston to cylinder wall clearance and are quieter at start-up. Ideal for street/road use

Piston Features:
• Accumulator Grooves
• Contact Reduction Grooves
• Double Broach Oilers
• Skirt Coating
• Under crown Milling for Weight Reduction
• Pin Fitting, Wire Locks and Rings Included



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

381248
PCG5031890
91110394201
91110394202
PCG5031590
91110394001
91110394002
91110394005
91110394006
91110394301
91110394302
91110394402

The product you are viewing cross references to these numbers
Best Price
381247
Product Information
Product Information
JE Piston - Set of 6
Forged from 4032 Aluminium Alloy

jepiston

Fits:
Porsche 911 2.4ltr (10.0:1)

Engine Size : 2.4ltr
Bore Size: 84.00mm
Stroke: 70.40mm
Rod length: 127.80mm
Compression Distance : 33.90mm
Compression Ratio: 10.0:1
Dome/Dish Volume: 30.7cc
Oversize: Standard (STD)
Material: 4032 Aluminium Alloy
Piston Weight (each): 375g

JE designs are specifically engineered for extreme applications up to and including professional competition. In this environment, the higher compression ratios, high boost or heavy nitrous use necessitate the higher tensile strength of 4032 and 2618 aluminium alloy, which has been optimized for aftermarket Nikasil cylinders. The JE Piston Porsche series now include low friction skirt coatings and are lighter than before, improving both performance and longevity.

The Dome/Dish require no deburring or preparation and feature a smooth flowing radii for excellent flame travel.

4032 Aluminium Alloy
Pistons manufactured from 4032 wrought aluminium alloy are designed for high performance applications where a strong and quiet piston is required. These pistons require less initial piston to cylinder wall clearance and are quieter at start-up. Ideal for street/road use

Piston Features:
• Accumulator Grooves
• Contact Reduction Grooves
• Double Broach Oilers
• Skirt Coating
• Under crown Milling for Weight Reduction
• Pin Fitting, Wire Locks and Rings Included



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

381247
PCG5031890
91110394201
91110394202
PCG5031590
91110394001
91110394002
91110394005
91110394006
91110394301
91110394302
91110394402

The product you are viewing cross references to these numbers
Best Price
381246
Product Information
Product Information
JE Piston - Set of 6
Forged from 4032 Aluminium Alloy

jepiston

Fits:
Porsche 911 2.2ltr (10.0:1)

Engine Size : 2.2ltr
Bore Size: 89.00mm
Stroke: 66.00mm
Rod length: 130.00mm
Compression Distance : 33.90mm
Compression Ratio: 10.0:1
Dome/Dish Volume: 29.3cc
Oversize: 5.00mm 
Material: 4032 Aluminium Alloy
Piston Weight (each): 400g

JE designs are specifically engineered for extreme applications up to and including professional competition. In this environment, the higher compression ratios, high boost or heavy nitrous use necessitate the higher tensile strength of 4032 and 2618 aluminium alloy, which has been optimized for aftermarket Nikasil cylinders. The JE Piston Porsche series now include low friction skirt coatings and are lighter than before, improving both performance and longevity.

The Dome/Dish require no deburring or preparation and feature a smooth flowing radii for excellent flame travel.

4032 Aluminium Alloy
Pistons manufactured from 4032 wrought aluminium alloy are designed for high performance applications where a strong and quiet piston is required. These pistons require less initial piston to cylinder wall clearance and are quieter at start-up. Ideal for street/road use

Piston Features:
• Accumulator Grooves
• Contact Reduction Grooves
• Double Broach Oilers
• Skirt Coating
• Under crown Milling for Weight Reduction
• Pin Fitting, Wire Locks and Rings Included



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

381246
91110391401
91110391402
91110391602
91110391802
91110291891
91150391802

The product you are viewing cross references to these numbers
Best Price
381245
Product Information
Product Information
JE Piston - Set of 6
Forged from 4032 Aluminium Alloy

jepiston

Fits:
Porsche 911 2.2ltr (10.0:1)

Engine Size : 2.2ltr
Bore Size: 87.50mm
Stroke: 66.00mm
Rod length: 130.00mm
Compression Distance : 33.90mm
Compression Ratio: 10.0:1
Dome/Dish Volume: 29.9cc
Oversize: 3.50mm 
Material: 4032 Aluminium Alloy
Piston Weight (each): 390g

JE designs are specifically engineered for extreme applications up to and including professional competition. In this environment, the higher compression ratios, high boost or heavy nitrous use necessitate the higher tensile strength of 4032 and 2618 aluminium alloy, which has been optimized for aftermarket Nikasil cylinders. The JE Piston Porsche series now include low friction skirt coatings and are lighter than before, improving both performance and longevity.

The Dome/Dish require no deburring or preparation and feature a smooth flowing radii for excellent flame travel.

4032 Aluminium Alloy
Pistons manufactured from 4032 wrought aluminium alloy are designed for high performance applications where a strong and quiet piston is required. These pistons require less initial piston to cylinder wall clearance and are quieter at start-up. Ideal for street/road use

Piston Features:
• Accumulator Grooves
• Contact Reduction Grooves
• Double Broach Oilers
• Skirt Coating
• Under crown Milling for Weight Reduction
• Pin Fitting, Wire Locks and Rings Included



Related reference numbers
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381245
91110391401
91110391402
91110391602
91110391802
91110291891
91150391802

The product you are viewing cross references to these numbers
Best Price
381244
Product Information
Product Information
JE Piston - Set of 6
Forged from 4032 Aluminium Alloy

jepiston

Fits:
Porsche 911 2.2ltr (10.0:1)

Engine Size : 2.2ltr
Bore Size: 85.00mm
Stroke: 66.00mm
Rod length: 130.00mm
Compression Distance : 33.90mm
Compression Ratio: 10.0:1
Dome/Dish Volume: 32cc
Oversize: 1.0mm 
Material: 4032 Aluminium Alloy
Piston Weight (each): 384g

JE designs are specifically engineered for extreme applications up to and including professional competition. In this environment, the higher compression ratios, high boost or heavy nitrous use necessitate the higher tensile strength of 4032 and 2618 aluminium alloy, which has been optimized for aftermarket Nikasil cylinders. The JE Piston Porsche series now include low friction skirt coatings and are lighter than before, improving both performance and longevity.

The Dome/Dish require no deburring or preparation and feature a smooth flowing radii for excellent flame travel.

4032 Aluminium Alloy
Pistons manufactured from 4032 wrought aluminium alloy are designed for high performance applications where a strong and quiet piston is required. These pistons require less initial piston to cylinder wall clearance and are quieter at start-up. Ideal for street/road use

Piston Features:
• Accumulator Grooves
• Contact Reduction Grooves
• Double Broach Oilers
• Skirt Coating
• Under crown Milling for Weight Reduction
• Pin Fitting, Wire Locks and Rings Included



Related reference numbers
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381244
91110391401
91110391402
91110391602
91110391802
91110291891
91150391802

The product you are viewing cross references to these numbers
Best Price
381243
Product Information
Product Information
JE Piston - Set of 6
Forged from 4032 Aluminium Alloy

jepiston

Fits:
Porsche 911 2.2ltr (10.0:1)

Engine Size : 2.2ltr
Bore Size: 84.00mm
Stroke: 66.00mm
Rod length: 130.00mm
Compression Distance : 33.90mm
Compression Ratio: 10.0:1
Dome/Dish Volume: 33.5cc
Oversize: Standard (STD)
Material: 4032 Aluminium Alloy
Piston Weight (each): 382g

JE designs are specifically engineered for extreme applications up to and including professional competition. In this environment, the higher compression ratios, high boost or heavy nitrous use necessitate the higher tensile strength of 4032 and 2618 aluminium alloy, which has been optimized for aftermarket Nikasil cylinders. The JE Piston Porsche series now include low friction skirt coatings and are lighter than before, improving both performance and longevity.

The Dome/Dish require no deburring or preparation and feature a smooth flowing radii for excellent flame travel.

4032 Aluminium Alloy
Pistons manufactured from 4032 wrought aluminium alloy are designed for high performance applications where a strong and quiet piston is required. These pistons require less initial piston to cylinder wall clearance and are quieter at start-up. Ideal for street/road use

Piston Features:
• Accumulator Grooves
• Contact Reduction Grooves
• Double Broach Oilers
• Skirt Coating
• Under crown Milling for Weight Reduction
• Pin Fitting, Wire Locks and Rings Included



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

381243
91110391401
91110391402
91110391602
91110391802
91110291891
91150391802

The product you are viewing cross references to these numbers
Best Price
381242
Product Information
Product Information
JE Piston - Set of 6
Forged from 4032 Aluminium Alloy

jepiston

Fits:
Porsche 911 2.0ltr (10.0:1)

Engine Size : 2.0ltr
Bore Size: 81.00mm
Stroke: 66.00mm
Rod length: 130.00mm
Compression Distance : 33.90mm
Compression Ratio: 10.0:1
Dome/Dish Volume: 35.8cc
Oversize: 1.00mm
Material: 4032 Aluminium Alloy
Piston Weight (each): 360g

JE designs are specifically engineered for extreme applications up to and including professional competition. In this environment, the higher compression ratios, high boost or heavy nitrous use necessitate the higher tensile strength of 4032 and 2618 aluminium alloy, which has been optimized for aftermarket Nikasil cylinders. The JE Piston Porsche series now include low friction skirt coatings and are lighter than before, improving both performance and longevity.

The Dome/Dish require no deburring or preparation and feature a smooth flowing radii for excellent flame travel.

4032 Aluminium Alloy
Pistons manufactured from 4032 wrought aluminium alloy are designed for high performance applications where a strong and quiet piston is required. These pistons require less initial piston to cylinder wall clearance and are quieter at start-up. Ideal for street/road use

Piston Features:
• Accumulator Grooves
• Contact Reduction Grooves
• Double Broach Oilers
• Skirt Coating
• Under crown Milling for Weight Reduction
• Pin Fitting, Wire Locks and Rings Included



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

381242
90110390200
90110390201
90110390301
90110390302
90110390390
90110390601
90110390690
90110390901
90110390902
90110391101
90110391102

The product you are viewing cross references to these numbers
Best Price
381241
Product Information
Product Information
JE Piston - Set of 6
Forged from 4032 Aluminium Alloy

jepiston

Fits:
Porsche 911 2.0ltr (10.0:1)

Engine Size : 2.0ltr
Bore Size: 80.00mm
Stroke: 66.00mm
Rod length: 130.00mm
Compression Distance : 33.90mm
Compression Ratio: 10.0:1
Dome/Dish Volume: 36.7cc
Oversize: Standard (STD)
Material: 4032 Aluminium Alloy
Piston Weight (each): 355g

JE designs are specifically engineered for extreme applications up to and including professional competition. In this environment, the higher compression ratios, high boost or heavy nitrous use necessitate the higher tensile strength of 4032 and 2618 aluminium alloy, which has been optimized for aftermarket Nikasil cylinders. The JE Piston Porsche series now include low friction skirt coatings and are lighter than before, improving both performance and longevity.

The Dome/Dish require no deburring or preparation and feature a smooth flowing radii for excellent flame travel.

4032 Aluminium Alloy
Pistons manufactured from 4032 wrought aluminium alloy are designed for high performance applications where a strong and quiet piston is required. These pistons require less initial piston to cylinder wall clearance and are quieter at start-up. Ideal for street/road use

Piston Features:
• Accumulator Grooves
• Contact Reduction Grooves
• Double Broach Oilers
• Skirt Coating
• Under crown Milling for Weight Reduction
• Pin Fitting, Wire Locks and Rings Included



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

381241
90110390200
90110390201
90110390301
90110390302
90110390390
90110390601
90110390690
90110390901
90110390902
90110391101
90110391102

The product you are viewing cross references to these numbers
Best Price
362143
Product Information
Product Information
JE piston - Set of 6

Forged from 2618 Aluminium Alloy

jepiston

Fits: 
Porsche 996 3.6L Turbo M96.70
Porsche 996 3.6L GT2 M96.70
Porsche 997 3.6L Turbo M97.70

Piston Material: 2618
Forged Bore: 3.937 (100.0mm)
Oversize: STD
Stroke: 76.4mm
Rod length: 5.0" (127.0mm)
Dome CC's: -.25.5
Comp Dist: 1.303" (33.1mm)
C/R: 9.4:1
Ring package designed for: 0.97, 1.2, 2.0mm
Piston Avg Weight: 430 grams

Designed for 911 engines compatible with a Nickel Ceramic bore, these pistons are machined from forged 2618 alloy for greater strength. The valve pockets are machined to accommodate high lift cams, and accept the stock stroke and rod length. The ring grooves are precision CNC machined and all new applications include skirt coating and 3D undercrown milling. Piston clearances designed for aluminium cylinders, steel/iron cylinders may require additional clearance.

2618 Aluminium Alloy
Pistons manufactured from 2618 wrought aluminium alloy are designed for racing and very demanding applications. These environments necessitate the higher strength 2618 aluminium alloy. When exposed to heat, 2618 aluminium alloy expands 15% more than 4032 aluminium alloy therefore the initial piston to cylinder wall needs to be 15% greater. This difference is most noticeable during cold start. When running at operating temperature both 2618 and 4032 pistons have approximately the same clearances.  

Includes:
• Accumulator Grooves
• Skirt Coating
• 3D Lightweight Undercrown Milling
• Pin fitting and wire locks
• 9310 high carbon alloy or tool steel wrist pins
• Rings Included

Related reference numbers
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362143
99610313174
99610391574

The product you are viewing cross references to these numbers
Special Offer
353313
Product Information
Product Information
JE piston - Set of 6
Forged from 2618 Aluminium Alloy

jepiston

Fits:
Porsche 911 3.6L 12V (12.5:1)

Engine Size : 3.6
Bore Size: 105.03mm
Stroke: 76.40mm
Rod length: 127.00mm
Compression Distance : 31.80mm
Compression Ratio: 12.5
Dome volume: 41.2cc
Oversize: 5.03mm

Designed for Porsche Air-cooled 911 engines compatible with a Nickel Ceramic bore, these pistons are machined from forged 2618 alloy for greater strength. The valve pockets are machined to accommodate high lift cams, and accept the stock stroke and rod length. The ring grooves are precision CNC machined and all new applications include skirt coating and 3D undercrown milling. Piston clearances designed for aluminum cylinders, steel/iron cylinders may require additional clearance.

2618 Aluminium Alloy
Pistons manufactured from 2618 wrought aluminium alloy are designed for racing and very demanding applications. These environments necessitate the higher strength 2618 aluminium alloy. When exposed to heat, 2618 aluminium alloy expands 15% more than 4032 aluminium alloy therefore the initial piston to cylinder wall needs to be 15% greater. This difference is most noticeable during cold start. When running at operating temperature both 2618 and 4032 pistons have approximately the same clearances.  

Includes:
• Accumulator Grooves
• Skirt Coating
• 3D Lightweight Undercrown Milling
• Pin fitting and wire locks
• 9310 high carbon alloy or tool steel wrist pins
• Rings Included

Related reference numbers
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353313
353313

The product you are viewing cross references to these numbers
Best Price
353312
Product Information
Product Information
JE Piston - Set of 6

Forged from 2618 Aluminium Alloy

jepiston

Fits:
Porsche 911 3.6L 12V (11.5:1)

Engine Size : 3.6
Bore Size: 105.03mm
Stroke: 76.40mm
Rod length: 127.00mm
Compression Distance : 31.80mm
Compression Ratio: 11.5
Dome volume: 35.7cc
Oversize: 5.03mm

Designed for Porsche Air-cooled 911 engines compatible with a Nickel Ceramic bore, these pistons are machined from forged 2618 alloy for greater strength. The valve pockets are machined to accommodate high lift cams, and accept the stock stroke and rod length. The ring grooves are precision CNC machined and all new applications include skirt coating and 3D undercrown milling. Piston clearances designed for aluminum cylinders, steel/iron cylinders may require additional clearance.

2618 Aluminium Alloy
Pistons manufactured from 2618 wrought aluminium alloy are designed for racing and very demanding applications. These environments necessitate the higher strength 2618 aluminium alloy. When exposed to heat, 2618 aluminium alloy expands 15% more than 4032 aluminium alloy therefore the initial piston to cylinder wall needs to be 15% greater. This difference is most noticeable during cold start. When running at operating temperature both 2618 and 4032 pistons have approximately the same clearances.  

Includes:
• Accumulator Grooves
• Skirt Coating
• 3D Lightweight Undercrown Milling
• Pin fitting and wire locks
• 9310 high carbon alloy or tool steel wrist pins
• Rings Included

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353312
353312

The product you are viewing cross references to these numbers
Best Price
353311
Product Information
Product Information
JE Piston - Set of 6
Forged from 2618 Aluminium Alloy

jepiston

Fits:
Porsche 911 3.6L 12V (12.5:1)

Engine Size : 3.6
Bore Size: 103.12mm
Stroke: 76.40mm
Rod length: 127.00mm
Compression Distance : 31.80mm
Compression Ratio: 12.5
Dome volume: 43.0cc
Oversize: 3.15mm

Designed for Porsche Air-cooled 911 engines compatible with a Nickel Ceramic bore, these pistons are machined from forged 2618 alloy for greater strength. The valve pockets are machined to accommodate high lift cams, and accept the stock stroke and rod length. The ring grooves are precision CNC machined and all new applications include skirt coating and 3D undercrown milling. Piston clearances designed for aluminum cylinders, steel/iron cylinders may require additional clearance.

2618 Aluminium Alloy
Pistons manufactured from 2618 wrought aluminium alloy are designed for racing and very demanding applications. These environments necessitate the higher strength 2618 aluminium alloy. When exposed to heat, 2618 aluminium alloy expands 15% more than 4032 aluminium alloy therefore the initial piston to cylinder wall needs to be 15% greater. This difference is most noticeable during cold start. When running at operating temperature both 2618 and 4032 pistons have approximately the same clearances.  

Includes:
• Accumulator Grooves
• Skirt Coating
• 3D Lightweight Undercrown Milling
• Pin fitting and wire locks
• 9310 high carbon alloy or tool steel wrist pins
• Rings Included

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353311
353311

The product you are viewing cross references to these numbers
Best Price
353310
Product Information
Product Information
JE Piston - Set of 6
Forged from 2618 Aluminium Alloy

jepiston

Fits:
Porsche 911 3.6L 12V (11.5:1)

Engine Size : 3.6
Bore Size: 103.12mm
Stroke: 76.40mm
Rod length: 127.00mm
Compression Distance : 31.80mm
Compression Ratio: 11.5
Dome volume: 37.7cc
Oversize: 3.15mm

Designed for Porsche Air-cooled 911 engines compatible with a Nickel Ceramic bore, these pistons are machined from forged 2618 alloy for greater strength. The valve pockets are machined to accommodate high lift cams, and accept the stock stroke and rod length. The ring grooves are precision CNC machined and all new applications include skirt coating and 3D undercrown milling. Piston clearances designed for aluminum cylinders, steel/iron cylinders may require additional clearance.

2618 Aluminium Alloy
Pistons manufactured from 2618 wrought aluminium alloy are designed for racing and very demanding applications. These environments necessitate the higher strength 2618 aluminium alloy. When exposed to heat, 2618 aluminium alloy expands 15% more than 4032 aluminium alloy therefore the initial piston to cylinder wall needs to be 15% greater. This difference is most noticeable during cold start. When running at operating temperature both 2618 and 4032 pistons have approximately the same clearances.  

Includes:
• Accumulator Grooves
• Skirt Coating
• 3D Lightweight Undercrown Milling
• Pin fitting and wire locks
• 9310 high carbon alloy or tool steel wrist pins
• Rings Included

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

353310
353310

The product you are viewing cross references to these numbers
Best Price
353309
Product Information
Product Information
JE Piston - Set of 6

Forged from 2618 Aluminium Alloy

jepiston

Fits:
Porsche 911 3.6L 12V (12.5:1)

Engine Size : 3.6
Bore Size: 102.00mm
Stroke: 76.40mm
Rod length: 127.00mm
Compression Distance : 31.80mm
Compression Ratio: 12.5
Dome volume: 44.0cc
Oversize: 2.00mm

Designed for Porsche Air-cooled 911 engines compatible with a Nickel Ceramic bore, these pistons are machined from forged 2618 alloy for greater strength. The valve pockets are machined to accommodate high lift cams, and accept the stock stroke and rod length. The ring grooves are precision CNC machined and all new applications include skirt coating and 3D undercrown milling. Piston clearances designed for aluminum cylinders, steel/iron cylinders may require additional clearance.

2618 Aluminium Alloy
Pistons manufactured from 2618 wrought aluminium alloy are designed for racing and very demanding applications. These environments necessitate the higher strength 2618 aluminium alloy. When exposed to heat, 2618 aluminium alloy expands 15% more than 4032 aluminium alloy therefore the initial piston to cylinder wall needs to be 15% greater. This difference is most noticeable during cold start. When running at operating temperature both 2618 and 4032 pistons have approximately the same clearances.  

Includes:
• Accumulator Grooves
• Skirt Coating
• 3D Lightweight Undercrown Milling
• Pin fitting and wire locks
• 9310 high carbon alloy or tool steel wrist pins
• Rings Included

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

353309
353309

The product you are viewing cross references to these numbers
Best Price
353308
Product Information
Product Information
JE Piston - Set of 6

Forged from 2618 Aluminium Alloy

jepiston

Fits:
Porsche 911 3.6L 12V (11.5:1)

Engine Size : 3.6
Bore Size: 102.00mm
Stroke: 76.40mm
Rod length: 127.00mm
Compression Distance : 31.80mm
Compression Ratio: 11.5
Dome volume: 38.8cc
Oversize: 2.00mm

Designed for Porsche Air-cooled 911 engines compatible with a Nickel Ceramic bore, these pistons are machined from forged 2618 alloy for greater strength. The valve pockets are machined to accommodate high lift cams, and accept the stock stroke and rod length. The ring grooves are precision CNC machined and all new applications include skirt coating and 3D undercrown milling. Piston clearances designed for aluminum cylinders, steel/iron cylinders may require additional clearance.

2618 Aluminium Alloy
Pistons manufactured from 2618 wrought aluminium alloy are designed for racing and very demanding applications. These environments necessitate the higher strength 2618 aluminium alloy. When exposed to heat, 2618 aluminium alloy expands 15% more than 4032 aluminium alloy therefore the initial piston to cylinder wall needs to be 15% greater. This difference is most noticeable during cold start. When running at operating temperature both 2618 and 4032 pistons have approximately the same clearances.  

Includes:
• Accumulator Grooves
• Skirt Coating
• 3D Lightweight Undercrown Milling
• Pin fitting and wire locks
• 9310 high carbon alloy or tool steel wrist pins
• Rings Included

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

353308
353308

The product you are viewing cross references to these numbers
Best Price
353307
Product Information
Product Information
JE Piston - Set of 6
Forged from 2618 Aluminium Alloy

jepiston

Fits:
Porsche 911 3.6L 12V (11.5:1)

Engine Size : 3.6
Bore Size: 100.00
Stroke: 76.40mm
Rod length: 127.00mm
Compression Distance : 31.80mm
Compression Ratio: 12.5
Dome volume: 45.8cc
Oversize: STD

Designed for Porsche Air-cooled 911 engines compatible with a Nickel Ceramic bore, these pistons are machined from forged 2618 alloy for greater strength. The valve pockets are machined to accommodate high lift cams, and accept the stock stroke and rod length. The ring grooves are precision CNC machined and all new applications include skirt coating and 3D undercrown milling. Piston clearances designed for aluminum cylinders, steel/iron cylinders may require additional clearance.


2618 Aluminium Alloy
Pistons manufactured from 2618 wrought aluminium alloy are designed for racing and very demanding applications. These environments necessitate the higher strength 2618 aluminium alloy. When exposed to heat, 2618 aluminium alloy expands 15% more than 4032 aluminium alloy therefore the initial piston to cylinder wall needs to be 15% greater. This difference is most noticeable during cold start. When running at operating temperature both 2618 and 4032 pistons have approximately the same clearances.  

Includes:
• Accumulator Grooves
• Skirt Coating
• 3D Lightweight Undercrown Milling
• Pin fitting and wire locks
• 9310 high carbon alloy or tool steel wrist pins
• Rings Included

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

353307
353307

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