High Performance Z-SERIES RACING TIMING CHAINHEX-A-JUST® TRUE® ROLLER TIMING SETSQUICK BUTTON™ TWO-PIECE TIMING COVERRACE BILLET TRUE® ROLLER TIMING SETSRACE TRUE® ROLLER TIMING SETSSTREET BILLET TRUE® ROLLER TIMING SETSSTREET TRUE® ROLLER TIMING SETSHEAVY DUTY TIMING SETS find my part RACE TRUE® ROLLER TIMING SETS Introduced by Cloyes in 1970, our competitors may say they have a true roller but only Cloyes has the original. Cloyes Race True Roller Timing Sets feature full roller-action chains made from high-strength steel for superior durability Cam sprockets are made from heat-treated cast or ductile iron, while crank sprockets are machined from heat-treated, high-carbon steel for strength The .250-inch rollers are cold-rolled and hard-ended to exacting standards, increasing load and RPM capabilities With three keyways for adjustability (4 degrees advanced, 4 degrees retarded, and normal), Cloyes Original race true roller timing sets are hand-matched to ensure precise chain tension Many applications available in .005” and .010” undersize Some application available with Z-Chain find my part PREVIOUSRace Billet True® Roller Timing Sets NEXTStreet Billet True® Roller Timing Sets