826M04250 Piston Kit for Suzuki JR50 1978-2003 42.50 mm Wiseco

Piston Kit for Wiseco 826M04250

This Wiseco 826M04250 .060 piston kit is an oversize replacement piston assembly for the Suzuki JR50, sized at 42.50 mm to restore top-end performance on worn cylinders.

Overview

This piston kit gives Suzuki JR50 owners a practical top-end rebuild option with a .060 oversize bore of 42.50 mm. The kit is built for riders and mechanics refreshing a worn or scored cylinder on 1978-2003 JR50 machines. It pairs with a matching oversize bore job for a clean, reliable fit.

Built For Performance

• .060 oversize bore at 42.50 mm for worn cylinders
• Forged piston construction for strength under heat and load
• Designed for the Suzuki JR50 1978-2003 top end
• Kit includes piston, rings, wrist pin, and clips
• Precision machining for consistent bore clearance

Fits These Machines

• for Suzuki JR50 1978-2003

On-The-Job Use

• Top-end rebuilds on worn JR50 engines
• Cylinder reboring to .060 oversize
• Restoring compression on older mini bikes
• Routine maintenance for youth off-road machines

Specs At A Glance

Good To Know

Q: Does this piston kit require cylinder boring? A: Yes, this .060 oversize piston needs the cylinder bored and honed to match the 42.50 mm size before installation.

Q: What is included in the kit? A: The kit typically includes the piston, rings, wrist pin, and circlips for a complete top-end refresh.

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