SPA Compact wastegate provides a great boost controller in a small, easy to fit package. It has 36mm valve with special steel alloy valve that can handle and control up to 400 whp with ease. This fully adjustable wastegate is made with a rigid cast iron body, stainless steel internals and a fined billet aluminum top. • Compact wastegate, good up to 400 HP • 36 mm valve • Teflon ring around membrane • Fully adjustable spring rate • Billet aluminum body • Comes in “L” style flange for SPA Turbo manifolds. • Available in silver, blue, red and black