You can have the same hand-matched Cloyes Hex-A-Just® True® Roller Speed Set that is used in EVERY IROC® Series race engine! IROC Series drivers are among the best in the world, and they accept nothing less than the best parts for their engines. That’s why every one of these 500 hp, 7000 rpm engines use a Cloyes Hex-A-Just® True® Roller Set for their timing needs. Race after race, mile after mile, these sets always perform at the highest level.

LS1 / LS2? . . .  LT1 / LT4? YEP, WE’VE GOT ‘EM ALL!! Looking for serious speed from your LS1 or LS2 engine? Our LS-1/LS-2 sets start with All-Billet Steel Sprockets, made “oversized” to eliminate chain slack found in OE and other aftermarket sets. Both sprockets are then Induction Heat-Treated, and “Hand-Matched” at the factory with our Premium TRUE® Roller chain – giving them superior strength, and precise accuracy for unmatched performance. Now available in Double Roller, too! We’ve got you LT-1 and LT-4 guys covered too! Cloyes offers True® Roller sets for both the LT-1 and LT-4 engines. These “All Billet” sets are also “Hand-Matched” with oversized sprockets for maximum performance.