Thanks to the technological strength built and confirmed over the years, STM ITALY SRL has deemed necessary a change in the marketing-commercial-R & D, to push the STM brand "Selection of Mechanical Technologies" towards new important objectives. The Vision of STM ITALY will be the same as always: to be a leader in the anti-friction sector, anticipating the future. This will allow us to provide both innovative solutions to the professionals of MotoGP, WSBK, MOTOCROSS and SUPERMOTARD, and the best production quality with the best materials for increasingly high performance and innovative products on the world market And not only. We will also expand the range of our aftermarket products with new products rich in unprecedented solutions. The objective of STM ITALY will therefore be KAIZEN, that is continuous business improvement, recalling the Company's history, maintaining its merits and resolving its defects. "Historia eST Magistra vitae" - History is a teacher of life.
Video - Manufacturer of Slipper Clutch
Video - Ducati Superleggera with STM dry clutch
Video - BMW S1000RR equipped with STM Dry Clutch Conversation
Heart of the STM Slipper Clutch...
- pressure action on the DISC PACK through the pressure plate.
- function of coil springs.
- pressure action on the DRUM.
- it is used to adjust the opening of the clutch during the anti-skid, then to adjust the engine brake.
How the springs work
The primary and secondary springs are mounted in such a way as to guarantee a preload which generates an initial resilient spring force.
How the primary spring works
When the lever is actuated, the preloading position of the primary spring is varied and reduced. The spring returns an elastic force of contrast to the action of the lever.
How the secondary spring works
The torque generated by the rear wheel tends to raise the drum. The secondary spring is compressed with respect to the initial resting position and generates an elastic contrast force.
The Clutch 'La Frizione'...
Motobull - approved dealer for STM
We can supply the full range of STM wet and dry slipper clutch kits, plus STM clutch tools, springs and accessories.
At competitive prices!
We can also provide technical advice.
- BMW CONVERSION KIT
- DUCATI CONVERSION KIT
- DUCATI DRY CLUTCHES
- DUCATI WET SLIPPER CLUTCHES
- DUCATI CLUTCH ACCESSORIES
- WET SLIPPER CLUTCHES
- Harley Davidson
- MV Agusta
- CLG OFF ROAD CLUTCHES
- AUDAX OFF ROAD CLUTCHES
- Gas Gas
- Accessories OFF ROAD
- Transparent Clutch Covers OFF ROAD
- SDS SUPER DRY SYSTEM CLUTCHES
- SUPERMOTARD SLIPPER CLUTCHES
- Gas Gas
- PIT BIKE CLUTCHES
If you cannot see the parts for your bike in the web store please get in touch, we're only too happy to help: -
Call on +44 (0)151 345 6490
...or send us a message Contact Us
...or chat on Facebook
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STM Evo GP Dry Slipper Clutch Conversion Kit BMW S1000RR / R / XR KTT-1300Special Price £2,025.48 £1,687.90 Regular Price £2,839.00
STM Evo GP Dry Slipper Clutch Conversion Kit Ducati XDiavel / XDiavel S KTT-1400Special Price £1,812.54 £1,510.45 Regular Price £2,446.00
STM Slipper Clutch APRILIA RSV4 / Tuono FAP-S040Special Price £720.47 £600.39 Regular Price £930.00
STM Slipper Clutch BMW S1000RR FBM-S020 / FBM-S021Special Price £720.47 £600.39 Regular Price £930.00
STM Slipper Clutch DUCATI 1199 PANIGALE - FDU-S050Special Price £720.47 £600.39 Regular Price £930.00
STM Slipper Clutch DUCATI 899 PANIGALE - FDU-S040Special Price £720.47 £600.39 Regular Price £930.00
STM Slipper Clutch DUCATI PANIGALE V4 - FDU-S100Special Price £720.47 £600.39 Regular Price £930.00
STM Slipper Clutch Honda CBR1000RR-R FHN-S170Special Price £720.47 £600.39 Regular Price £930.00
STM Slipper Clutch MV AGUSTA - FMV-S020Special Price £720.47 £600.39 Regular Price £930.00