SPI .020 Over Bore Piston Kit for Yamaha SRV 540 SR-V 540 fits 1980-1991 73.5mm

SPI .020 Over Bore Piston Kit for Yamaha

The SPI .020 Over Bore Piston Kit is a direct replacement piston assembly for Yamaha SRV 540 and SR-V 540 snowmobile engines from 1980 to 1991, featuring a 73.5mm bore diameter for .020 over-size applications.

Overview

This SPI .020 over bore piston kit is designed to restore compression and performance in worn Yamaha SRV 540 engines. It includes the piston, rings, and wrist pin for a complete top-end rebuild. The .020 over bore piston kit allows your cylinder to be bored to the next available oversize, extending engine life.

Built For Performance

• Precision-machined from high-strength aluminum alloy
• Includes quality piston rings for optimal sealing
• Wrist pin and retaining clips included for easy installation
• Designed for .020 over bore to match resized cylinders
• Direct fit for Yamaha SRV 540 engine applications

Fits These Machines

• for Yamaha SRV 540 (1980-1991)
• for Yamaha SR-V 540 (1980-1991)

On-The-Job Use

• Snowmobile engine rebuilds and overhauls
• Restoration of vintage Yamaha snowmobiles
• Replacing worn or damaged pistons due to scoring or wear
• Performance rebuilds for reliable winter operation

Specs At A Glance

Good To Know

Q: Does this piston kit come with all necessary components? A: Yes, the kit includes the piston, piston rings, wrist pin, and circlips. You may need to reuse your original cylinder and have it bored to the proper oversize.

Q: Can I install this piston kit without machining the cylinder? A: No, this .020 over bore piston kit requires the cylinder to be bored to 73.5mm by a qualified machine shop to ensure proper clearance and fit.

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