Innovation
not Imitation

Lifters

Lifters

U/P - Ultra Pro Pressurized Oiling to Axle Assembly 
T/B - Tie Bar style lifter does not use OEM lifter retention
P/O - Pressure Oiling to Axle Assembly
O/C - Pushrod cup is on center in the lifter body
NBA - Nascar Bearing and Axle Assembly for Endurance Applications
UFRS - Ultimate Fighter Roller Series Bushing lifter NO NEEDLES