These are Ski Doo MXZ583 1997-98, Formula Z 583 1994-99, Formula STX 1994-96, Summit 583 1994-98, Formula 583 1997. Photo shown may not be correct, but you will get the correct pistons. These are SINGLE RING for all 583cc motors 76mm bore x 64mm stroke. Oversizes available in +0.020" and 0.040". Please specify in the notes if you need oversize and if so what size. This is a complete kit, comes with two pistons, two rings, wrist pin bearings, wrist pins, circlips and all top end gaskets necessary, We offer service after the sale. We are a full service install shop and you can call us with questions and help during the installation. Research our quality and reputation on dootalk.com. We have several thousand pistons in service with no issues. Several Ski Doo shops use only our Dual ring pistons when servicing their sleds. We also offer a cylinder exchange program, and crankshaft remanufacturing services. Individual pistons are available also. These are OEM direct re-placement, hyperEutectic cast, molybdenum coated skirts, HBR103 hard anodized piston domes. Superior durability and performance. MCB Performance Center has been in business since 1994. We offer service and advice before and after the sale.
On Feb-13-09 at 07:30:10 PST, seller added the following information: