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In honor of the 20th anniversary of Steve Millenís historic 1994 IMSA season, we have extended our specials to August 28th! Use coupon code: LEMANS20 Read More>>
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For nearly 30 years STILLEN has been a leader in automotive customizing. Whether you're looking for programmers, supercharger kits, performance exhaust components, performance brakescold air intakes, or exterior automotive enhancements such as body kits, tonneau covers, mirrors, grilles, or even suspension systems for lowering kits, lift kits, camber adjusters, you can be sure STILLEN has the performance auto part or accessory you need.

STILLEN is a manufacturer and retailer of premium quality aftermarket performance parts and accessories. Although we manufacture aftermarket performance parts for many makes and models, we are best known for our Nissan performance parts. Particular models include the 300ZX, 350Z, 370Z, Nissan GT-R, Altima, Maxima, Titan, and Nissan Juke performance parts. We are also known for manufacturing premium quality aftermarket performance parts for Infiniti. Particular models include the G35, FX35, M37, M56, QX56, and G37 aftermarket performance parts. Our Camaro performance parts are quite popular as well. STILLEN's R&D department are continually creating innovative aftermarket performance parts and accessories that are trend setters across the industry.

Founded in 1986, STILLEN is recognized as one of the premier tuners in the world. With Engineers and a full R&D department on location, STILLEN has long been engineering big brake kits with Brembo and AP Racing, developing superchargers with Magnuson, Edelbrock, Whipple, Vortech, and under the leadership of championship race car driver Steve Millen, trusted by thousands of enthusiasts, manufacturing STILLEN branded products and upgrades, as well as wholesale distribution and retail partners for such brands as K&N, Eibach, AEM, Street Scene, Belltech, KW, Extang, Hawk, Magnaflow and many others.



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