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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My 1988s4 5 speed has now been supercharged (stage 1) for 3 years and over 22,000 km. I am still very happy with the modification. Oh, and there are no rattles or whines from the engine or the SC. Chris G.

I am extremely happy with the SC kit the quality and design are excellent. When ever someone sees the SC installed on the car they are amazed at how clean and well designed the kit is. Not to mention that the car can eat eat 99% of cars on the road for lunch. Dana J.

I purchased a Supercharger (Stage 11989 model) from you 1-2 years ago, really happy/fantastic! Gary M.

Video for this product is available Product Installation Services Available


Application: 1986.5 to 1995 Porsche® 928 all

Easy Installation! Our kits come with everything you need to do the complete installation yourself. The Stage 1 kit is our easiest kit to install because it does not require a separate intercooler system. Plus, because the Raptor V supercharger used in these kits is self-contained - with permanently lubricated bearings - the need for oil lines to and from the engine is eliminated. Typical installation time: 8 hours complete!

Top Technology! The 928 Motorsports Stage 1 Supercharger kit for the late-model Porsche® 928 will provide more horsepower and torque and do it efficiently, reliably and quietly with no loss of drivability or daily ease of operation. You will substantially increase your 928's acceleration and fun-factor! 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 413 HP at the tire and 475 HP at the engine, up from the stock numbers of 271 HP at the tire and 312 HP at the engine. A gain of 142 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 sold to dozens of 928 owners and tested for more than 5 years and thousands of miles. It is rock-solid and dependable. Perhaps the best SC kit we have ever designed! You benefit from our experience!

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 any fuel system modifications. Uses stock injectors and ECU.
  • 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 to10 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 Intake Elbow to MAF System
  • 928 Motorsports Supercharger Mounting brackets
  • 928M Bosch Blow-off Valve 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.


Part Number

Price (USD)



Stage 1 Superchargers Kit for 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