After more lengthy test sessions we now have available our exhaust rebuild kits. Suitable for pretty much all .21 - .32 one piece spring coupled pipe sets including Answer, Novarossi, OS and Sworkz. The springs have been heat tested to not loose tension and the gaskets manufactured from the best rubber compound we could source. Includes 2 x Exhuast Gasket, 2 x Long Exhaust springs, 3 x Short Exhaust joint springs.