STM Products

STM slipper clutches offer two major advantages; to assist the rider and help prevent damage to the engine and gearbox.

The slipper clutch assists the rider by reducing the effect of engine braking. Engine braking causes the rear wheel to ‘lock up’ and ‘patter’ when braking hard for a corner. A rider that is too aggressive in this situation suffers, because the rear wheel loses contact with the ground, making continued braking and direction change much harder to accomplish.

The STM clutch also helps save the engine and gearbox, again by reducing engine braking. Most motorcycle engines have a rev limiter, to stop the engine exceeding a certain speed considered safe by the manufacturer. This works fine when the engine is under power, but if a rider is approaching a corner, close to the r.p.m. ‘red line’, and then down-shifts, the engine can easily be forced to a speed it was never designed to reach, often with catastrophic results. Additional benefits are realised as the gearbox suffers less abuse for the same reasons, and it is less important for the rider to provide perfectly co-ordinated gear changes.

STM Superbike Slipper Clutch for 1000cc race and sports bikes, available for the following models...

 Aprilia RSV1000 2000-2009

Aprilia Dorsoduro 2008-2010

Aprilia Shiver 2007-2010

Aprilia RSV4 2009-2010

BMW K 1200 2005-2006

BMW SBK 2009-2010

Buell XB-9 / XB-12 2002-2007

Buell 1125 R 2008-2010

Harley Davidson Sportster 883 / 1200 1998-2009

Honda CB1000 2008-2010

Honda CBR1000 RR 2004-2010

Kawasaki ZX10 R 2004-2010

Kawasaki ZX14 R 2004-2010

KTM 990 Adventure 2004-2009

KTM 990 Superduke 2004-2009

KTM RC8 2008-2010

MV Agusta 750 2001-2003

MV Agusta F4 1000 2003-2007

MV Agusta Brutale 910 / 1078 / 1090 / 990 2005-2010

MV Agusta 312 R 2007-2009

MV Agusta 1000 F5 2010 / 2010

Suzuki GSXR1000 2002-2010

Suzuki GSXR 1300

Hayabusa 1998-2010

Triumph Triple / Tiger 1050 2006-2010

Yamaha R1 1998-2010

Yamaha FZS 1000

Fazer 2001-2005

Yamaha FZ1 1000 / FZ1-S Fazer 2006-2010

Price: £722.40 + VAT

STM Supersport Slipper Clutch for 600cc race and sports bikes, available for the following...

Honda Hornet 600 2007-2010

Honda CBR 600 RR 2003-2010

Kawasaki ZX 6R 2005-2010

Suzuki GSXR 600 / 750 1999-2010

Triumph Speed Triple / Daytona 675 2006-2010

Yamaha R6 2001-2010

Price £688 + VAT