Jesel Pro Series Aluminum Shaft Mount Roller Rocker Arm Kit - 1.7 / 1.7 Ratio - Full Roller - Trick Flow High Port Heads - Small Block Ford (Set of 16) 1420A55 The next evolution of Racepak

The next evolution of Racepak display has arrived

1/8" NPT Boost Reference " 1:1

Non-Threaded Ring Gear

Still today the focus of Darton International's business is the manufacture and delivery of cylinder sleeves

Jesel Pro Series Aluminum Shaft Mount Roller Rocker Arm Kit - 1.7 / 1.7 Ratio - Full Roller - Trick Flow High Port Heads - Small Block Ford (Set of 16) 1420A55 The next evolution of RacepakProduct Description: Rocker Arm Pro Series Shaft Mount 1. 7 1. 7 Ratio Full Roller Aluminum Natural Trick Flow High Port Heads Small Block Ford Set of 16 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