Jesel Rocker Arm Needle Bearing - 3/4 in OD - 9/16 in ID - 3/4 in Long (Set of 4) Balaclava A combined effort by Callies

A combined effort by Callies CNC programming and engineering staffs has resulted in a component that is distinctive and highly functional

Lightweight Nomex ®and ® and construction for ultimate comfort and fit

780 lb/in Spring Rate

Shafts and gears are cryogenically treatedHow is a Brinn Original Transmission Different

Jesel Rocker Arm Needle Bearing - 3/4 in OD - 9/16 in ID - 3/4 in Long (Set of 4) Balaclava A combined effort by CalliesProduct Description: Rocker Arm Bearing Needle 3 4 in OD 9 16 in ID 3 4 in Long Set of 4 Dan Jesel realized early on that the success and demand for his high end valvetrain components was in part dependent on huge valve lifts, unheard of spring pressures and rpm that most thought was impossible. So he started on a 10 year quest to perfect the roller lifter. After nearly nine years of R&D and endless testing, Dan brought the first Jesel roller lifters