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*Dual Springs 22.3 o/d fit stock spring seats*

Dual springs usually require machine work for the inner spring to sit properly WE OFFER the 16mm Tool on Ebay. 

RPQ Titanium Retainers with both 5 & 5.5 split locks

Predator, Clone, Honda, Tillotson, BSP, NR, ARC  196cc  208cc 212cc 224cc 236cc 

Non Hemi  or Hemi Heads some have 5mm stems some have 5.5mm  you get both in this kit

your valves Must be the single groove split lock type stem.

Convert your Non Performance head to "Titanium" Dual Spring

5mm or 5.5mm valve stem  (with split locks) RPQ exclusive design

These BrownBoxCams Retainers used by many of the top engine builders!

Kit Includes

2 RPQ Titanium spring retainers w/split locks  for both 5 & 5.5mm valve stems

38lb Dual RPQ springs will fit most all stock spring seats* 

Retainers Allows the use of 26lb single valve springs or 40lb+ if used with dual springs (or larger)

 You supply the labor, This requires mechanical ability and knowledge of how to build performance heads and all that entails.