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.

Forged from 4032 Aluminium Alloy

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
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)

Forged from 4032 Aluminium Alloy

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
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)

Forged from 4032 Aluminium Alloy

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
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)

Forged from 4032 Aluminium Alloy

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
Related, superseded, cross reference or alternative numbers for comparison.
381245
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)

Forged from 4032 Aluminium Alloy

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
Related, superseded, cross reference or alternative numbers for comparison.
381244
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)

Forged from 4032 Aluminium Alloy

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
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)

Forged from 4032 Aluminium Alloy

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
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)

Forged from 4032 Aluminium Alloy

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
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)

Forged from 2618 Aluminium Alloy

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.
• 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.
362143
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 997 TURBO 2007>>

Forged from 2618 Aluminium Alloy

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.
• 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.
353313
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97

Forged from 2618 Aluminium Alloy

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.
• 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.
353312
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97

Forged from 2618 Aluminium Alloy

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.
• 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.
353311
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97

Forged from 2618 Aluminium Alloy

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.
• 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
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97

Forged from 2618 Aluminium Alloy

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.
• 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
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97

Forged from 2618 Aluminium Alloy

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.
• 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
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97

Forged from 2618 Aluminium Alloy

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.
• 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
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97