Standard 78.00 mm Piston Kit for Sea-Doo XP 650 1993-1995

Standard 78.00 mm Piston Kit for Sea-Doo XP 650

This standard bore piston kit for Sea-Doo XP 650 watercraft restores top-end compression with a 78.00 mm piston sized for the 1993-1995 XP 650 engine.

Overview

This 78.00 mm piston kit for Sea-Doo XP 650 models delivers a direct-fit top-end rebuild solution for the 650 engine family. Each kit is built to standard bore dimensions so riders can refresh worn pistons and rings without machining the cylinders. It suits personal watercraft owners and small engine rebuilders working on 1993-1995 Sea-Doo XP 650 machines.

Built For Performance

• Standard 78.00 mm bore size matches the original cylinder dimensions for the 650 engine
• Piston body cast and machined for consistent skirt clearance and ring groove geometry
• Ring set included to restore compression and reduce blow-by
• Wrist pin and circlips supplied for a complete top-end install
• Designed for two-stroke marine duty in personal watercraft cooling and load conditions

Fits These Machines

• for Sea-Doo XP 650 1993
• for Sea-Doo XP 650 1994
• for Sea-Doo XP 650 1995

On-The-Job Use

• Top-end rebuilds after low compression or piston scoring
• Routine refresh on high-hour 650 engines
• Restoring performance on 1993-1995 XP 650 watercraft
• Shop and DIY rebuild projects on Sea-Doo 650 powerplants

Specs At A Glance

Good To Know

Q: Do I need to machine my cylinders to install this kit? A: No. This is a standard 78.00 mm bore piston kit, so it fits factory cylinders that are still within spec and have not been overbored.

Q: How many pistons should I replace at once? A: On a two-stroke 650, replacing both pistons together is common practice so compression stays balanced across cylinders.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.