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T.P.P. Centrifugal Weight Assisted Clutch Pressure Plate

Easy on the hand with smooth engagement combined with no-slip performance at full throttle, high rev take-offs - these are guide lines which are not easy to meet for a clutch system. While modern bikes perform satisfactory in stock configuration, they soon reach their limits with increased engine potential. A 124 cui. S&S powerplant literally smokes the original clutch or requires clutch springs and lever pulling efforts that only some Arnold Schwarzenegger would find acceptable. This problem goes to extremes in drag racing and that´s exactly where they developed a brilliant device to fight it: The variable pressure clutch.

Its principle is an array of weighted levers on the pressure plate which increase pressure on the clutch pack due to centrifugal forces when the engine revs up. Clutch slippage is made nearly impossible with this set-up. The drawback is that pure variable pressure clutches are not suitable for street riding with its varying traffic situations. The Japanese T.P.P. pressure plates so-to-say combine the best of both worlds: conventional clutch actuation supported by a variable pressure type pressure plate. The big advantages of this combo are that much lighter diaphragm clutch springs can be used for up to 50% easier lever effort and the weighted levers increase pack compression up to 60% for zero loss of engine performance through slippage. The kits show the best combination of low lever effort and secure clutch pressure for the respective model/engine group. Patent protected in Europe.

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Centrifugal weight assisted clutch pressure plate by T.P.P., Japan
W&W# Picture Price incl. VAT* Available from warehouse Germany?
80-915 T.P.P. Centrifugal Weight Assisted Clutch Pressure Plate fits XL 883 1991→, Lever effort: -30%, clutch pressure: 68 kg, NOTE: Due to differences in outer primary cover casting some models may require modifications on primary cover, 1991-1993 models need a 1994-2003 primary and derby cover and clutch release mechanism 324.47 € kit
in stock
80-900 T.P.P. Centrifugal Weight Assisted Clutch Pressure Plate fits Big Twin 1990-1997, Lever effort: -50%, clutch pressure: 95 kg 297.85 € kit
in stock
80-913 T.P.P. Centrifugal Weight Assisted Clutch Pressure Plate fits Dyna 1998-2017 and Softail 1998-2017 (exc. CVO, and SE models 2013→), Touring 1998-2016 (exc. Low models 2015-2016), Lever effort: -27%, clutch pressure: 100 kg 257.96 € kit
in stock
80-914 T.P.P. Centrifugal Weight Assisted Clutch Pressure Plate fits Big Twin 1998-2017 up to 124 cui., Lever effort: -7%, clutch pressure: 127 kg 281.42 € kit
in stock
* The price includes German VAT (19% or reduced rate of 7% for Books).

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