Piper Valve Springs A20NFT Astra J VXR
16 x Valve Springs
16 x Valve Spring Caps
Piper Uprated Valve Springs are essential for all Tuned Astra J VXR's that are running or about to run with a Hybrid Turbo, as the increase in boost pressure raises the back pressure in the exhaust manifold and turbo exhaust housing causing the valves to float, these have a higher spring to counter this. They come as a set of 16 complete with matched spring caps.