The Dr. Pulley Suzuki Burgman 400 HiT Clutch, 169-291 has 2 sets of springs at work: the clutch spring inside controls the movement of the clutch pads towards the clutch bell through centrifugal power.
The second set of torque springs (pillow springs), externally mounted, controls the pressure by using a push pin on the clutch linings against the clutch bell. This prevents most of the slipping phase of the clutch, thus creating less friction and allowing less heat to be created. Heat is lost power! Therefore your scooter will accelerate faster due to the power transfer occurring at a lower RPM.
The clutch can be customized to all personal needs. For instance, if you want to get more power at the start, choose a stronger clutch spring to increase the starting RPM. If you want to shorten the slipping phase of the clutch, you should use a weaker torque (pillow) spring. For an extreme start, choose a strong clutch spring and a weak (or no) pillow spring.
Benefits:
- Overall Outer Diameter: 157mm
- Center Opening: 40mm (width), 36mm (height)
- 55 Degree Pillow Springs
- Includes Assortment of Pillow Springs and Clutch Springs for Fine Tuning
- Reduces Clutch Slippage
- Improved Clutch efficiency
