928 Motorsports, LLC ®

928 Motorsports
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928 Motorsports

928 Motorsports
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928 Motorsports
928 Motorsports 928 Motorsports

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Video Available Product Installation Services Available

I jut wanted u to know that my engine works fantastic. It makes 540hp by 6.700 rpm. And the races have been super this season. If everything goes well, I will finish no. 2 in the Danish championship for special saloon cars. Not bad for a 20 year old car. Andreas K.

Application : 1986.5 to 1995 Porsche® 928 all

Easy Installation! Our kits come with everything you need to do the complete installation yourself. Plus, because the Raptor V supercharger used in these kits is self-contained the need for oil lines to and from the engine is eliminated. Typical installation time: 14 hours complete including the intercooler system!

Top Technology! The 928 Motorsports Stage 2 Supercharger kit is our most powerful system, owing to the included air-to-water intercooler system. This allows us to safely add more boost than the Stage 1 kit, while increasing the density of the intake charge air. This rugged supercharger's precision construction and the exclusive ceramic-coated impeller assures full high speed performance at all RPM's along with outstanding reliability and quiet operation. No special care or maintenance is needed.

Dyno-proven Results: This Supercharger kit installed on a 1991 Porsche® 928 with manual transmission (photos below) produced 438 HP at the tire and 504 HP at the engine, up from the stock numbers of 271 HP at the tire and 312 HP at the engine. A gain of 167 HP! We did this at less than 5 pounds of boost for a nice, safe installation with no need to change head gaskets.

Street-proven and Tested Tough: This kit has been street-tested for months and thousands of miles before release to the public. It is rock-solid and dependable. Perhaps the best SC kit we have ever designed!

Some Features:

  • Designed to allow your Air Conditioning to remain in place and function.
  • Does not require oil lines running to/from your supercharger; simplifies installation and reduces oil leaks.
  • Does not require removal of the intake manifold or fuel system to install.
  • Does not require removal of the timing belt cover(s) to install.
  • Complete kit has been Dyno-tuned and tested, safe for your motor.
  • Complete kit includes every part you need and detailed instructions.
  • Designed to be installed by the average mechanic/or owner in under 8 to 10 hours.
  • Tech Support provided at (920) 485-0928.
  • Uses the advanced and highly-efficient Raptor supercharger.
  • The only centrifugal supercharger machined from billet, not castings.
  • The only centrifugal supercharger with a ceramic-coated impeller for greater adiabatic efficiency.

Complete Kit: In addition to the Supercharger, brackets, all hardware, and tubing specific to your vehicle, 928 Motorsports also provides you with:

  • 928 Motorsports Billet Aluminum Anodized Crankshaft Pulley
  • 928 Motorsports Cold Air Intake System with K&N Filter
  • 928 Motorsports Custom Intercooler
  • 928 Motorsports Special Fan-Forced Intercooler Heat Exchanger
  • Xtra-High Flow Electric Water Pump
  • A Matched Set of 8 New Injectors
  • Bosch Blow-off Valve
  • SKF Idler/Tensioner Pulley Assembly
  • Two Auxiliary Electric Fans
  • All required silicone hoses and elbows
  • All required tubing and clamps
  • All required metric hardware
  • Excellent Assembly Instructions and Tech Support

Download the Installation Manual and See for Yourself! Many answers to your questions can be had by having a look at the quality of our Installation Instructions.

Warranty: These are factory NEW kits and are warranted direct to you. The Limited Warranty covers any and all defects in workmanship and material, regardless of mileage incurred during the warranty period.


Price (USD)



Stage 2 Supercharger Kit for the Porsche® 928



Normally Ships in 4 Weeks or Less

* Domestic US shipping shown. International shipping will be calculated based on location.


Phone: (920) 485-0928
Email: info@928motorsports.com

928 Motorsports, LLC - All Rights Reserved
Horicon, Wisconsin USA

928Motorsports.com - Performance Parts for your Porsche® 928