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Design 911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://design91.uk/images/schemaLogo.png https://design91.uk/images/schemaLogo.png +443456003478 https://design91.uk Facebook Instagram

Aasco

About Aasco

Aasco Performance Inc. was founded in 1995 by brothers Dennis and Randall Aase who's passion for Porsche Motorsports has expanded over 80 years of combined experience and expertise in quality race proven parts and services.

100% American made - Designed and manufactured in our Southern California facility.

DISPLAYING 1 to 16 (of 37 products)
1 2 3
Best Price
POWERCLUTCH4
Product Information
Product Information
Lightweight aluminium flywheel with performance clutch kit and sprung centre plate

Sprung centre plate gives a more compliant drivetrain feel over the rigid centre plate version


Contains Aasco flywheel and Sachs Performance clutch kit. 

Fits:
Porsche 996 Carrera / Carrera 4 3.4ltr - 1997 to 2001 (non turbo)
Porsche 997.1 Carrera / 4  3.6ltr - 2005 to 2008 (non Turbo)


- AASCO Flywheel with bolts
- Sachs Performance pressure plate
- Sachs Performance drive plate (sprung) 
- Sachs bearing
- Clutch bolts



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Related, superseded, cross reference or alternative numbers for comparison.

POWERCLUTCH4
106411-11
99611608004
BLT6411
881861999856
883082999736
90006713103

The product you are viewing cross references to these numbers
Best Price
HP10T8HPSSKIT
Product Information
Product Information
High performance valve spring, seat and retainer kit 9mm. 

aasco

Fits:
Porsche 993 - 1994 to 1998

Our Valve Springs are designed and manufactured to specifically fit the envelope of a Porsche application not a spring from another use. 

It operates a higher natural frequency than the original spring for racing and at the very least minimizes damage from over rev in track day situations. 

Kit includes
High performance valve spring x 12
High performance valve spring seat x 12
High performance 8mm titanium valve spring retainer disc x 12



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Related, superseded, cross reference or alternative numbers for comparison.

HP10T8HPSSKIT
90110590150
90110590151
90110546300
90110546303
99310542100
99310590151
99310556302

The product you are viewing cross references to these numbers
Best Price
HP109HSSKIT
Product Information
Product Information
High performance valve spring, seat and retainer kit 9mm. 

aasco

Fits:
Porsche 911 - 1965 to 1989
Porsche 964 - 1989 to 1994

Our Valve Springs are designed and manufactured to specifically fit the envelope of a Porsche application not a spring from another use. 

It operates a higher natural frequency than the original spring for racing and at the very least minimizes damage from over rev in track day situations. 

Kit includes
High performance valve spring x 12
High performance valve spring seat x 12
High performance 9mm titanium valve spring retainer disc x 12



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

HP109HSSKIT
90110590150
90110590151
90110546300
90110546303
90110542103
90110542104
90110552102

The product you are viewing cross references to these numbers
Best Price
HP10T9
Product Information
Product Information
9mm Titanium valve spring retainer disc kit - high performance. 

aasco

Fits:
Porsche 911 - 1965 to 1989
Porsche 964 - 1989 to 1994

9mm Porsche 911 titanium valve spring retainers for 9mm valves. 

Can be used to directly replace OE retainers but we recommend using in conjunction with Aasco HP109  valve springs and HPSS spring seats.

Set of 12



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

HP10T9
90110542103
90110542104
90110552102

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Best Price
HP10T8
Product Information
Product Information
8mm titanium valve spring retainer disc - high performance

aasco

Fits:
Porsche 993 - 1994 to 1998

8mm Porsche 911 Titanium Retainers for 993 1995-1998 for 8mm valves.

Please note
Must be used in conjunction with Aasco HP109-Valve Springs and HPSS Spring Seats. 



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

HP10T8
99310542100

The product you are viewing cross references to these numbers
Best Price
HPSS
Product Information
Product Information
Valve spring seat kit - high performance. 

aasco

Fits:
Porsche 911 - 1965 to 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998

Our Steel Spring Seats pocket the inner spring of our Aasco High Performance Valve Springs.

Our Valve Springs are designed and manufactured to specifically fit the envelope of a Porsche application not a spring from another use. 

It operates a higher natural frequency than the original spring for racing and at the very least minimizes damage from over rev in track day situations. 

Please note
993 - must use 8mm Ti retainers and Aasco Seats



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

HPSS
90110546300
90110546303
99310546302

The product you are viewing cross references to these numbers
Best Price
HP109
Product Information
Product Information
Valve spring kit - high performance. 

aasco

Fits:
Porsche 911 - 1965 to 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998

Our Valve Springs are designed and manufactured to specifically fit the envelope of a Porsche application not a spring from another use. 

It operates a higher natural frequency than the original spring for racing and at the very least minimizes damage from over rev in track day situations. 

Please note
993 - must use 8mm Ti retainers and Aasco Seats



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

HP109
90110590150
90110590151
99310590151

The product you are viewing cross references to these numbers
Best Price
BLT6411
Product Information
Product Information
Flywheel crank bolt kit, Qty 8
for Porsche 996/997 non-turbo, Boxster/Cayman

aasco

Fits:
Part: 106411-11
Part: 106412-11
Part: 106417-11

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

BLT6411
106411-11
106412-11
106417-11
99907309209
99907309202

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Best Price
106425-12-PKG
Product Information
Product Information
Lightweight Steel Flywheel and Clutch Kit.
Includes Sachs Performance clutch kit

aasco

Fits:
Porsche 997.2 & 991 997.2 2009-16 3.6L/3.8L
Steel DFI

Features:
• Light-weight for improved performance and drastically reduced M.O.I.
• Replaceable heat shield (friction surface), no need to surface flywheel
• OEM clutches bolt on for easy installation
• High tolerance manufacturing to insure a perfect hassle free installation
• Designed for normal street use for every day performance enthusiasts
• Stepped dowel pins so they are held captive by the clutch cover
• Racing parts available for the professional
• Highest quality materials like 6061-T6 aluminum for the flywheel, treated steel for the heat shield and OEM quality starter ring gears
• CAD designed/ CNC machined in house for the ultimate in quality control
• One year limited warranty on production components

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

106425-12-PKG
106425-12-PKG
106425-12
9G111402001
9G111691300
9G111691304
99711608002

The product you are viewing cross references to these numbers
Best Price
106431-12-KIT
Product Information
Product Information
Lightweight Steel Flywheel and Clutch Kit.
Complete Kit with Sachs Performance Clutch
Steel - 18LBS
Can be used with ODB1 EMS

aasco

Fits:
Porsche 993 TURBO 3.6L 1996-98 (OBDII ONLY)
Porsche 996 TURBO 3.6L 1999-05
Porsche 997 TURBO 3.6L 2006-13
Porsche 997 GT3 3.6L 2006 - 2009

Features:
• Light-weight for improved performance and drastically reduced M.O.I. (Moment of Inertia)
• Replaceable heat shield (friction surface), no need to surface flywheel
• OEM clutches bolt on for easy installation
• High tolerance manufacturing to insure a perfect hassle free installation
• Designed for normal street use for every day performance enthusiasts
• Stepped dowel pins so they are held captive by the clutch cover
• Racing parts available for the professional
• Highest quality materials like 6061-T6 aluminum for the flywheel, treated steel for the heat shield and OEM quality starter ring gears
• CAD designed/ CNC machined in house for the ultimate in quality control
• One year limited warranty on production components

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

106431-12-KIT
106431-12KIT
106431-12PKG

The product you are viewing cross references to these numbers
Best Price
106413-11-PKG
Product Information
Product Information
Aasco Billet Aluminum Lightweight Flywheel with Sachs Performance Clutch.
Complete clutch and flywheel package.

aasco

Includes:
Aasco Flywheel 106413-11
Sachs Performance Pressure plate 883082999764
Sachs Performance Clutch disc 881861999856
Includes Sachs Release bearing and all necessary installation hardware.

Fits:
Porsche 993 3.6L 1996-98 (OBDII ONLY)
Porsche 993 TURBO 3.6L 1996-98 (OBDII ONLY)
Porsche 996 TURBO 3.6L 1999-05
Porsche 997 TURBO 3.6L 2006-13
Porsche 997 GT3 3.6L 2006 - 2009

*** Please see installation instructions page, Larger portion of the spring carrier must face towards the flywheel so as the clutch diaphragm spring will not contact the clutch disc. Failure to follow this procedure will result in clutch failure and not covered by any warranty due to improper installation.

Features:
• Light-weight for improved performance and drastically reduced M.O.I.
• Replaceable heat shield (friction surface), no need to surface flywheel
• OEM clutches bolt on for easy installation
• High tolerance manufacturing to insure a perfect hassle free installation
• Designed for normal street use for every day performance enthusiasts
• Stepped dowel pins so they are held captive by the clutch cover
• Racing parts available for the professional
• Highest quality materials like 6061-T6 aluminum for the flywheel, treated steel for the heat shield and OEM quality starter ring gears
• CAD designed/ CNC machined in house for the ultimate in quality control
• One year limited warranty on production components

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

106413-11-PKG
106413-11
99611401250
96411602853
99611601535
95011608008
99611601354
99611602753

The product you are viewing cross references to these numbers
Best Price
106423-12-PKG
Product Information
Product Information
Complete clutch and flywheel package.
includes Sachs Performance clutch.

aasco

Fits:
Porsche 987.2 Boxster S 3.4L 2009-12
Porsche 987.2 Cayman S 3.4L 2009-12
Porsche 981 Boxster S 3.4L 2013>>
Porsche 981 Cayman S 3.4L 2013>>

*** Please see installation instructions page, Larger portion of the spring carrier must face towards the flywheel so as the clutch diaphragm spring will not contact the clutch disc. Failure to follow this procedure will result in clutch failure and not covered by any warranty due to improper installation.

Features:
• Light-weight for improved performance and drastically reduced M.O.I.
• Replaceable heat shield (friction surface), no need to surface flywheel
• OEM clutches bolt on for easy installation
• High tolerance manufacturing to insure a perfect hassle free installation
• Designed for normal street use for every day performance enthusiasts
• Stepped dowel pins so they are held captive by the clutch cover
• Racing parts available for the professional
• Highest quality materials like 6061-T6 aluminum for the flywheel, treated steel for the heat shield and OEM quality starter ring gears
• CAD designed/ CNC machined in house for the ultimate in quality control
• One year limited warranty on production components

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

106423-12-PKG
106423-12
10642312
9G211401220
9G211401222
9G211401221
98711691333
98711691340
98711691334
99711608002
98111401210
98111691300
98111691301
012141165E
98111401211

The product you are viewing cross references to these numbers
Best Price
106447-12
Product Information
Product Information
Lightweight Steel Flywheel.

aasco

Fits:
Porsche 718 Cayman GT4 4.0L 2020-21

Features:
• Light-weight for improved performance and drastically reduced M.O.I. (Moment of Inertia)
• OEM clutches bolt on for easy installation
• High tolerance manufacturing to insure a perfect hassle free installation
• Designed for normal street use for every day performance enthusiasts
• Stepped dowel pins so they are held captive by the clutch cover
• Racing parts available for the professional
• Highest quality materials for the flywheel like treated steel and OEM quality starter ring gears
• CAD designed/ CNC machined in house for the ultimate in quality control
• One year limited warranty on production components

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

106447-12
106447-12
982105262E

The product you are viewing cross references to these numbers
Best Price
106437-12
Product Information
Product Information
Lightweight Steel Flywheel.

aasco

Fits:
Porsche 996 3.4L / 3.6L 1999-04
Porsche 997.1 3.6L 2005-08
NOT for Turbo models

Weight: 8kg

Features:
• Light-weight for improved performance and drastically reduced M.O.I. (Moment of Inertia)
• OEM clutches bolt on for easy installation
• High tolerance manufacturing to insure a perfect hassle free installation
• Designed for normal street use for every day performance enthusiasts
• Stepped dowel pins so they are held captive by the clutch cover
• Racing parts available for the professional
• Highest quality materials for the flywheel like treated steel and OEM quality starter ring gears
• CAD designed/ CNC machined in house for the ultimate in quality control
• One year limited warranty on production components

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

106437-12
106437-12
99611401203
99611401205
99711401200
99711401201
99711401201
99711401203
99711401204
99711401205

The product you are viewing cross references to these numbers
Best Price
106436-12
Product Information
Product Information
Lightweight Steel Flywheel.

aasco

Fits:
Porsche 986 Boxster 2.5L / 2.7L / 3.2L 1997-04
Porsche 987.1 Boxster 2.7L / 3.2L / 3.4L 2004-08
Porsche 987C.1 Cayman 2.7L / 3.4L 2004-08

Features:
Aasco Billet Steel Midweight Flywheel For Porsche 986 & 987 Boxster and Cayman models. Aasco Flywheel 106436-12 (18lbs)Includes Flywheel Crank bolts *Please see installation instructions page, Larger portion of the spring carrier must face towards the flywheel so as the clutch diaphragm spring will not contact the clutch disc.

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

106436-12
106436-12
98611401205
98611401206
98611401204
98611401201

The product you are viewing cross references to these numbers
Best Price
106431-12
Product Information
Product Information
Lightweight Steel Flywheel.
Mid-Weight 18LBS can be used with ODB1 EMS

aasco

Fits:
Porsche 964 3.6L 1991-1994 (OBD1 ONLY)
Porsche 993 3.6L 1996-98 (OBDII ONLY)
Porsche 993 TURBO 3.6L 1996-98 (OBDII ONLY)
Porsche 996 TURBO 3.6L 1999-05
Porsche 997 TURBO 3.6L 2006-13
Porsche 997 GT3 3.6L 2006 - 2009

Features:
• Light-weight for improved performance and drastically reduced M.O.I.
• Replaceable heat shield (friction surface), no need to surface flywheel
• OEM clutches bolt on for easy installation
• High tolerance manufacturing to insure a perfect hassle free installation
• Designed for normal street use for every day performance enthusiasts
• Stepped dowel pins so they are held captive by the clutch cover
• Racing parts available for the professional
• Highest quality materials like 6061-T6 aluminum for the flywheel, treated steel for the heat shield and OEM quality starter ring gears
• CAD designed/ CNC machined in house for the ultimate in quality control
• One year limited warranty on production components

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

106431-12
106431-12
96411401251
99611401250
96411401202
99711401251

The product you are viewing cross references to these numbers
DISPLAYING 1 to 16 (of 37 products)
1 2 3