Namura .020 Over Piston Kit for Suzuki 250 Quadsport Ozark Quadrunner 66.5mm

.020 Over Piston Kit (66.5mm) for Suzuki

This .020 over piston kit for Suzuki 250cc engines, including Quadsport, Ozark, and Quadrunner models, provides a direct replacement piston, rings, and pin at a 66.5mm bore size for rebuilding worn cylinders.

Overview

This .020 over piston kit for Suzuki 250cc ATV and utility machines replaces the original piston with a slightly larger 66.5mm diameter to restore compression and power after cylinder wear. Designed for Suzuki Quadsport, Ozark, and Quadrunner models, it includes the piston, rings, and wrist pin for a complete top-end rebuild.

Built For Performance

• Machined from high‑silicon aluminum alloy for strength and heat resistance
• .020" oversize (66.5mm) compensates for cylinder wear and restores proper clearance
• Includes premium chrome‑plated piston rings for low friction and long life
• Precision‑honed pin bore ensures accurate wrist pin fit
• Lightweight design reduces reciprocating mass for smoother operation

Fits These Machines

• for Suzuki 250 Quadsport
• for Suzuki Ozark 250
• for Suzuki Quadrunner 250

On-The-Job Use

• Rebuilding top‑end on worn or scored cylinders
• Restoring compression and power on high‑mileage ATVs
• Replacing a damaged or seized piston after overheating
• Performing a full engine overhaul on utility quads

Specs At A Glance

Good To Know

Q: Will this piston kit work with my stock cylinder?A: This is an .020" oversize piston, so the cylinder must be bored to 66.5mm. Confirm your cylinder can be bored safely before ordering.

Q: Does the kit include the piston pin clips or circlips?A: The kit includes the wrist pin but not retaining clips. You will need to reuse or purchase new circlips separately for installation.

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