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Clutch Masters » Pages » 725/850: Twin Discs

725/850: Twin Discs

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Clutch Masters is proud to introduce the finest and most economical multi-plate clutch systems available for today’s high performance vehicles, the 725 and 850 Series. Clutch Masters Twin Disc systems are pure racing technology that also works well in high performance street applications that will be used on the street on rare occasions. They are designed to hold tremendous horsepower and torque ratings, while being reasonable to operate on the track. By increasing the clamping force of the pressure plate and adding to the square inches of usable disc area, CM Twin Discs significantly increase clamping values with an average of 50% increase in pedal pressure depending on the application. The cover assembly is machined from billet aluminum with 25% more tensile strength than the competition’s cast unit. The flywheel is machined from billet 6061-T6 aluminum to meet SFI spec  1.2 for competition in NHRA, NDRA, IDRC, IHRA, SCCA and NASA. Each aluminum flywheel includes a replaceable heat shield.  Steel flywheels are also available on select applications. **

725 SERIES – (7.25” Twin Disc)
The 725 series is a smaller diameter assembly, which creates less rotating mass and offering quicker, and smoother shifting with much better throttle response, ideal for Drag racing applications.

Available Stages:
“Street and Race” (TD7S)  – 1 ceramic rigid disc, and 1 fiber tuff rigid disc
“Race” (TD7R) – 2 ceramic rigid discs




850 SERIES – (8.50” Twin Disc)
The 850 series is a larger diameter assembly, which is designed for high horsepower applications. The 850 Series has a higher holding capacity, less clutch chatter, and a smoother engagement compared to the 725 Series. The 850 series Twin disc will accept one sprung disc creating a slightly smoother engagement compared to two rigid discs


Available Stages:
“Street and Race” (TD8S)  – 1 sprung ceramic disc, and 1 fiber tuff rigid disc
“Race” (TD8R) – 1 sprung ceramic disc, and 1 ceramic rigid disc.


Clutch Masters offers custom option when required by utilizing a variety of friction surfaces, discs and pressure ratings to satisfy any need!


Clutch Masters Twin Disc
features:

  • Components can be purchased separately for economical repair.
  • Positive release for ease of high RPM staging and shifting.
  • Most have experienced better 4/10's times and averaged hundreds of passes without complications or repair
All systems include:
  • Aluminum Cover Assembly with attached Diaphragm
  • Pressure Plate Ring
  • Two Discs
  • One Mid Plate
  • Billet Aluminum Flywheel*
  • Release Bearing
  • Pilot Bearing (when applicable)
  • Pressure Plate Bolts


Average weight of the entire assembly is over 50% lighter than OEM

*Steel flywheels are available on select applications, call for price.

SFI Approved