Includes a high-quality top end gasket kit. Polaris sport 400l 400 wiseco piston cylinder gaskets rebuild kit 83mm 1996 1997 seco pistons are forged from high silicon, low expansion aluminum which offers superior strength, reduced weight, improved heat transfer, and longer life. This item is in the category eBay Motors\Parts & Accessories\ATV, Side-by-Side & UTV Parts & Accessories\Engines & Engine Parts\Other Engine Parts.