Lightweight PIllows plus high friction pads allow for quicker take off at higher revs.

Fits Yamaha splines found on Mineralli designed engines from Yamaha, Keeway, CPI and many more, will not fit TGB or Kymco.

Used along with an NVY bell or KOSO bell results are realized right away dont forget your torque spring and spring base for smoother shift to highest gear ratio.

These do not fit stock Yamaha Zuma clutch bells at 105mm.