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850 STRAPPED Twin Disc


Clutch Masters is proud to present our FX850 Strapped Twin Disc Clutch Kit. We developed the FX850 Strapped out of necessity to bridge the gap between a single disc clutch that is easy to drive on the street and our original FX850 Twin Disc. While our original 850 Twin Disc is streatable, it was never designed with extended street use in mind. That is where the 850 Strapped is different. Utilizing drive straps to isolate the pressure plate and the mid-plate between the two discs, we are able to virtually eliminate all chatter and allow for a much smoother engagement.

This similar methodology has been proven to work incredibly well in our FX1000 and FX1200 Twin Disc kits with users reporting that their cars or trucks are able to be driven with ease on the street yet take a beating on the track, all while maintaining very manageable peddle pressure. With one sprung ceramic disc and one rigid ceramic disc utilizing the highest quality ceramic material, you can be confident that your clutch won't be slipping. 

Like the rest of our twin disc covers, the 850 STRAPPED cover assembly is machined from billet aluminum and is then Type 3 hard anodized. Our billet covers have roughly 25% more tensile strength than the competition’s cast unit. By focusing our ability on machining the strongest cover possible while maintaining minimal weight, we are essentially able to eliminate any flex in the cover. Our billet covers see only .003" of flex where as a cast or stamped unit can see as much as .030" of flex. While both of those numbers may seem small, in the reality of a clutch and the minimal amount of movement they have to begin with to engage and disengage, by drastically reducing this flex in the cover, the driver is able to operate the clutch much more consistently and confidently. All the movement being applied to the diaphragm of the clutch from the throwout bearing is used solely to engage and disengage the clutch and isn't wasted by the cover flexing first. The strength of our covers also results in greater clamping force over the same amount of area vs. a cast or stamped cover. This means our twin discs are easy to drive and have superior clamping force to make sure all the power your engine is making is being utilized.

Flywheels are made for each specific application in either aluminum or steel. Our aluminum flywheels are machined from billet 6061-T6 aluminum to meet SFI spec 1.2 for competition in NHRA, NDRA, IDRC, IHRA, SCCA and NASA. Aluminum flywheels are Type 3 hard coat anodized to ensure their durability and performance lasts. Each aluminum flywheel includes a replaceable insert. Steel flywheels are machined from 1045 billet cores and are then black oxide treated for rust preventio 


Quick Specs:

  • FX850 Strapped Clutch kits and Flywheels are Designed and Manufactured in the USA
  • Hard Anodized Aluminum Cover Assembly with attached Diaphragm
  • Lightweight Aluminum or Steel flywheel depending on application
  • One Sprung Ceramic Disc, One Rigid Ceramic Disc
  • Heat Treated Heavy Duty Drive Straps
  • Clutch kits units will include a release bearing, clutch fork, alignment tool, and mounting hardware.


  • Fits all current FX850 twin disc applications (can easily upgrade from current FX850 twin disc to FX850 STRAPPED) 
  • Popular applications include; Mitsubishi EVO 4G63; Audi A3, A4, A6, Allroad, S4, RS6, TT; Honda S2000; Acura NSX; Acura TL, TSX (J30 and J35 Engines) Subaru EJ20/25 and FA20; BMW N54, N55, S54; Nissan/Infiniti VQ35/37; Nissan SR20DET, KA24DE, RB20/RB25/RB26; VW Jetta, Golf R and GTI 1.8L and 2.0L Turbo; Mazda RX-7 and MazdaSpeed6; Toyota 7M/1JZ/2JZ and Tacoma; Chevrolet LS Engine; Porsche 996 (Turbo 4, GT2, GT3), 997 (Turbo, GT3)



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