JIMS Powerglide™ Tappets — Oversize (+0.005"), Diameter 0.7360" – 66-84 Big Twin, 80, 83-84 Touring, 82-83 FXR

⚙️ These tappets will run in cast iron or aluminum tappet blocks.

📏 We recommend fitting the tappets to the blocks with a clearance of .0007" to .0012".

🔩 Produced from billet bearing steel for consistent strength and wear resistance.

🧭 A true center-line design provides longer roller life and exact cam timing.

🛠️ State-of-the-art pushrod seat, machined with the same segmented parabolic cup as the JIMS® roller rockers.

🔬 Hydraulic units are hand fit to a running fit of .0002" using an ultra-precision air gauging system.