Wiseco Replacement Ring Sets Dirtbike/ATV from IPD Racing — 5 part numbers in stock and shipping from our Texas warehouse. Popular fitments here include Replacement Ring Set for Kawasaki KX500, Suzuki LT-500R (86mm), Replacement Ring Set for KTM 380 (79mm), Replacement Ring Set for Polaris 400. Wiseco has forged its own pistons in Mentor, Ohio since 1941, and every part in this category is built for engines that get used hard, not babied. Genuine Wiseco engine hardware, priced at MAP and backed by the same fitment support we give every part we sell. Need help confirming fitment for your machine? Call or email IPD Racing before you order — we would rather answer a question than process a return.