OTR Premium Clutches are engineered to OEM form, fit and function. Made in the USA, we use the latest ceramic material for 10–15% more holding power than carbotic and a 1-year warranty (parts only). Patented cryogenically treated springs virtually eliminate disc spring failures, and permanently lubed and sealed release bearings deliver longer life and less maintenance. Bushings are pressed then crimped into sleeve, promoting longer bushing life. The adjuster is patented and self-locking, there is no lock to remove or depress; just turn to adjust. Self-adjusting clutch models also available.