Description
The ProX Piston Kit for Sea Doo 720 1.50 is a large oversize option for engines that have undergone significant wear, prior overbores, or more serious cylinder damage. At 1.50 mm over, this piston is commonly used in later stage rebuilds where smaller oversizes can no longer clean up scoring or distortion. As part of the genuine ProX Racing Parts catalog, it is designed to deliver OEM style precision and durability even in demanding conditions.
- 1.50 mm oversize piston kit engineered for Sea Doo 720 engines needing a substantial overbore to restore cylinder integrity.
- Precision machined from low expansion, low friction alloy to match OEM shape and specification where applicable.
- Supplied with piston, rings, wrist pin, and circlips for a complete core top end component package.
- Backed by ProXs expertise in pistons, connecting rods, crankshafts, valves, and other internal engine parts for powersports.
- Intended as a high quality replacement for worn or damaged OEM pistons in personal watercraft applications.
Moving to a 1.50 mm oversize typically indicates a more serious rebuild effort, and it is important to verify that sufficient cylinder wall thickness remains for safe operation. When used with professional boring and honing, the ProX piston and ring set can help a Sea Doo 720 engine recover solid compression, reliable ring sealing, and smooth running. It is a practical choice for owners determined to keep a favorite ski in service rather than replacing the engine or machine.
During the rebuild, pay close attention to bore measurements, ring end gaps, and piston to wall clearances, and inspect the crankshaft, bearings, and seals for signs of distress. Replace gaskets, clean all passages thoroughly, and follow recommended break in procedures to allow the new rings to seat correctly. With careful assembly and ongoing maintenance, the ProX 1.50 mm oversize piston kit can provide many more hours of trustworthy performance from Sea Doo 720 based watercraft.
