RPQ BrownBoxCams Titanium Lite-Weight Performance Valve Spring Retainers
these are intended for STANDARD Springs (check our other listings for LG spring size)
these fit most springs that fit in stock spring seat pockets, 10.8, 18, 22, 26ln springs
They are 21.70mm outside diameter and will handle dual springs saves 40% weight over most stock retainers
Our exclusive RPQ design allows all our retainers to be used with 5 or 5.5mm valve stems when used with the appropriate matching split-locks
Predator, Clone, Honda, Tillotson, BSP, NR, ARC 196cc 208cc 212cc 224cc 236cc
5.5mm valve stem and 5mm Valve stem Split-locks are included with each set
YOUR VALVES MUST BE THE SINGLE GROOVE TYPE THAT ACCEPTS SPLIT LOCKS!
As used by many of the top engine builders!
Kit Includes
2ea Big 21.7 outside diameter RPQ Titanium spring retainers split locks
Split locks for 2 valves (4ea in both 5mm and 5.5mm sizes)
Retainers Allows the use of 10-26lb+ single valve springs or 40lb+ if used with dual springs
installation requires mechanical ability and knowledge of how to build performance heads and all that entails.