ATS Non Conversion Pull Carbon Twin Clutch Subaru WRX STI 02-07

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ATS Non Conversion Pull Carbon Twin Clutch Subaru WRX STI 02-07

ATS Non Conversion Pull Carbon Twin Clutch Subaru WRX STI 02+

The first in the industry, the evolutionary ATS Conversion Free Carbon single / twin clutch does not require a pull – push conversion. It is conversion free.


  • The ATS NC-Pull Carbon Clutch utilizes a stock clutch cover or a stock replacement after-market clutch cover. There is no pull – push conversion required.
  • The installment conforms to the instruction of your stock service manual.
  • Excellent torque delivery and ultra smooth engagement from ATS&ACROSS carbon discs
  • A used clutch cover can be used if the distortion / damage is within 0.3mm.
  • ATS has added a special pressure plate under the stock clutch cover to assure proper friction & abrasion characteristics.
  • All internal plates / discs are made by ATS. ATS has been in the performance clutch industry for more than 10 years and offers a product that you can use in confidence unquestionably.
  • The lineup includes a single carbon and a twin carbon clutch. (Note 1)
  • With a use of aftermarket clutch cover of more than 1,100kg clamping rate, the rated horse power that can be attained is 700 hp.

Note 1: ATS generally recommends the twin clutch due to it’s increased torque capacity. However, if the usage is limited to standard street driving, the single clutch can provide plenty of performance for your driving experience. Please consult your shop or ATS for more information.


  • In the diagram below, the upper part in light purple color is the stock clutch cover. The structure and materials of the rest are basically the same as those of a standard ATS carbon clutch.
  • The adaptation to either single or twin clutch is made by changing the height of the pressure plate.
  • The stock cover is installed on the casing wall. In order to secure enough strength, the casing has been integrated onto the flywheel.
Rated Horsepower

  • The rated horsepower depends upon the clamping rate of the clutch cover.
  • With a new clutch cover of 1,100kg clamping rate, a twin clutch and single clutch could handle up to 700hp and 350hp respectively.
  • Please adjust the estimated capacity accordingly if you re-use a stock cover with a weaken spring rate.
  • ATS recommends a clutch cover with a higher than 1,100kg clamping rate for the CF single carbon.


  • For spirited street driving, please use a new clutch cover with a high clamping rate (preferably more than 1,100kg)
  • If the clutch starts slipping, adjust your driving style and minimize the damage to the steel plates. Then, change the cover to a new and preferably one with a higher clamp rate.
  • You may consider upgrading from single to a twin.
  • For racing use, ATS recommends using our standard carbon or metal clutches with an ATS clutch cover.

Proposition 65

WARNING: Cancer and Reproductive Harm

Vehicle Engine Notes
Subaru STI

Subaru WRX

Who Is ATS Clutch?

ATS (Active Traction Service) was established in October 1995 by enthusiasts who had extensive knowledge and experience in domestic formula car racing in Japan from the era of the FL500. The primary mission of ATS was to provide an ideal LSD (limited-slip differential) to the racing industry based on enormous research and development. 

Since its inception more than 20 years ago, ATS has garnered a solid reputation for being an LSD specialized manufacturer. From the very beginning, ATS has been supplying limited-slip differentials to hundreds of top-class Japanese professional and amateur racecar drivers. This allowed ATS to obtain useful and accurate performance data from actual battles in the world of motorsports. The categories ranged from endurance races, sprint races, and autocross, to rally and drag racing. The extensive data gained from such racing activity was and continues to be used by ATS for further its research and development into the improvement of existing products and to invent new ones.

What Does ATS Clutch Offer?

ATS offers a comprehensive lineup of racing clutches and brake systems for various makes, models, and applications. In 1999, in cooperation with ACROSS Corporation ATS began marketing carbon clutches and carbon LSDs. ACROSS is a leading carbon manufacturer with the most advanced CC composite technology in the world. The super lightweight and heat-resistant characteristics of CC composite deliver exceptional strength, response, and durability to the driver. ATS has recently added pistons and cool-down series to its inventory as well. Its noiseless operation is very smooth and easy on the transmission. From the street to the racetrack, under any driving condition, ATS carbon clutches enhance your driving performance and overall experience. It’s no wonder why ATS products are a favorite and top choice for many streetcar tuners and shops as well as professional racers.

The carbon limited-slip differential series and carbon clutch series, which were delivered in early 2001, were immediately and thoroughly verified by famous tuners. With this, ATS Clutch was able to obtain incredible support in terms of performance, operability, and durability. The only cost, and seemingly the only bottleneck, was resolved by technological innovation and the establishment of a mass-production system. The performance and remarkable durability of the carbon LSD and clutch were overwhelmingly higher than its metal counterparts. Carbon LSDs and clutches are now continuing to attract attention as standard tuning gears.

Upgrade to ATS Clutch at Vivid Racing

ATS is at the cutting edge of the industry, committed to staying one step ahead in technology and delivering high-quality products that are second to none. If you are in the market to upgrade your vehicle’s clutch, then look no further than ATS. Vivid Racing carries a wide range of ATS Clutch products for several different makes and models. Our inventory of ATS Clutch products includes limited-slip differentials, gear sets, and twin- and triple-plate clutch kits with flywheels. If you have any questions regarding ATS or its products, please contact Vivid Racing’s specialized sales team at (480) 966-3040. 

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