STM Products
The World's finest Slipper ClutchesMX R-Evolution Clutch
A replacement clutch for off road motorcycles featuring a diaphragm spring for improved action. This is not a slipper clutch!
The new “MX R-Evolution” is a long-life light-weight clutch specifically designed by STM technicians to bring clutch performance to the next level in terms of precision, response and control. The new MX R-Evolution clutches contain many of the technical solutions developed by STM in recent years: “Evoluzione” Spring Technology - All “R-Evolution” clutches are equipped with “Evoluzione” springs which are the result of STM’s diaphragm spring technology. Years of cooperation with top SX and MX teams have proven the advantages of our “Evoluzione” spring over the traditional coil springs used by OEM clutch manufacturers. The digressive action of the “Evoluzione” spring allows for faster engagement of the clutch and superior precision and control of the clutch when actuating the clutch lever (this also translates into better starts). Innovative Hub Design - “R-Evolution” clutches have an innovative hub design that allows optimal clutch response when operating the lever and consistent performance throughout the race. The steel guides on the hub guarantee a better disengagement of the disc pack and long life of the clutch hub. No-wear Inserts – “R-Evolution” hubs and pressure plates contain no-wear inserts that avoid wear caused by the friction plates on the aluminium surfaces. STM Tempered Steel Discs - All “R-Evolution” clutches come with tempered steel plates designed to match the STM hub design and to work with the original friction plates. These discs guarantee a constant rate of consumption of the disc pack inside the clutch and lead to longer life of the hub. Forced Lubrication System (FLS) – The “R-Evolution” clutch is designed to ensure improved lubrication of the clutch components. STM’s forced lubrication System ensures optimal circulation of engine oil trough specifically designed passageways. FLS guarantees consistent clutch performance throughout its range of use and extends the life of the individual clutch components. “R-Evolution” clutches can be fitted with the OEM clutch basket or with STM off-road baskets (sold separately), using OEM friction plates.
The new “R-Evolution” clutches are currently available for the following applications:
Aprilia SXV 4.5 5.5
KTM 450/ 505 SX-F
KTM 250 SX-F
Honda CRF 150
Honda CRF 250
Honda CRF 450 2003 / 2008
Honda CRF 450 2009 / 2010
Yamaha YZ/WR 250
Yamaha YZ/WR 450
£351.00 + VAT
STM clutches for Supermoto & Offroad bikes
available for the following...
Aprilia SXV/RXV/MXV 4.5/5.5 2005 - 2010
Honda CRF150 2007 - 2010
Honda CRF250 2004 - 2010
Honda CRF450 2002 - 2010
Honda CRF450X 2005 - 2009
Husaberg FS/FE 450/501/550/570/650 2004 - 2010
Husqvarna TE/TC 450/510 2004 - 2010
Husqvarna SM450/510/530 R/RR 2004 - 2010
Husqvarna TE/SM 610 IE 2000 - 2010
Husqvarna SM630R 2001 - 2007
Kawasaki KX250F 2005 - 2010
Kawasaki KX450F 2006 - 2010
KTM 250 EXC-F/XC/SX-F 2006 - 2008
KTM 450 SMR/EXC/XC/SX-F 2003 - 2010
KTM 525 EXC 2003 - 2007
KTM 505 SX-F 207 - 2010
KTM 530 EXC/XC 2008 - 2010
KTM 630 SMR 2006 - 2007
KTM LC4 2000 - 2007
Suzuki DRZ 400 2000 - 2009
Suzuki RMZ 250 2004 - 2010
Suzuki RMZ 450 2005 - 2010
Yamaha YZ/WR 250F 2001 - 2010
Yamaha YZ/WR 426F 2000 - 2002
Yamaha YZ/WR 450F 2003 - 2010
Price: £645.00 +VAT
