Holden Alloytec V6 Springs | Titanium Retainers KVS39-BT supra and offers more stable boost

and offers more stable boost control

however we are currently developing a few harness options (subscribe to our newsletter for updates)

WG38/40 7psi Pink Middle Spring

This new generation coil kit has been specifically designed as an upgraded direct drop-in replacement for the Cosworth 2 litre 'YB' engine

The StraightGate50 is simple to use and packed with performance

Holden Alloytec V6 Springs | Titanium Retainers KVS39-BT supra and offers more stable boost70Lb seated @38. 0mm, 166lb @11mm lift, Bind @ 24. 9mm "Holden Allytech KVS39 BT Progressivly wound 'Pacaloy' Beehive Valve spring set with titanium retainers. Engineered to match our camshafts for the ultimate in quality, performance and reliability. 38. 0mm Installed height 70lb closed pressure. 166lb at 11mm lift. 24. 9mm coil bind height."