COMP Cams 733-12 COMP Cams Titanium Valve Spring Retainers ARP Engine Bolt Kits The tube-and-fin design features 16

The tube-and-fin design features 16 rows of 1" coolant tubes for maximum surface area

Nitrous pressure fluctuates significantly with bottle temperature

and overall engine performance

no axle modification

COMP Cams 733-12 COMP Cams Titanium Valve Spring Retainers ARP Engine Bolt Kits The tube-and-fin design features 16The COMP Cams 733 12 COMP Cams Titanium Valve Spring Retainers are precision valve spring retainers designed for high RPM valvetrain stability. Retainers lock the valve spring in place at the correct installed height while transferring spring force directly to the valve stem through the keepers. Lightweight retainers reduce reciprocating mass, allowing higher RPM operation without valve float. Machined from 6AL 4V titanium and hard anodized for wear