We offer a kit with Swiftune race double valve springs. We recommend them with the Swiftune SW23T billet race camshaft. These race springs are fitted to all our race engines. In this kit, you will find a set of steel top cap and collets. Both suit single groove race valves only. We will also supply a set of washers to sit beneath the Swiftune race valve springs. These are used to perfect the fitted spring length and tension on high performance engines. This set includes: 8 x Swiftune race valve springs 8 x Swiftune steel top caps 8 x Swiftune race valve spring washers 16 x Swiftune race single groove collets
