2 SPI Standard Bore Piston Kits for Yamaha Excel V 540 & XLV 540 1979-1990 73mm

2 SPI Standard Bore Piston Kits for Yamaha

These two SPI piston kits are standard bore (73mm) for Yamaha Excel V 540 and XLV 540 snowmobiles from 1979 to 1990, providing a direct replacement for worn pistons. These piston kits restore engine performance in vintage Yamaha sleds.

Overview

These two SPI standard bore piston kits are designed for Yamaha Excel V 540 and XLV 540 snowmobiles, featuring a 73mm bore. Each kit includes a piston, rings, and wrist pin for a complete top-end rebuild. Ideal for maintaining or restoring your Yamaha 540cc two-stroke engine, these piston kits deliver reliable performance.

Built For Performance

• Manufactured from high-quality aluminum alloy for strength
• Precision-machined to standard bore specifications (73mm)
• Includes premium piston rings for efficient compression
• Wrist pin and circlips included for secure installation
• Engineered to meet OEM tolerances for Yamaha 540 engines

Fits These Machines

• for Yamaha Excel V 540 (1979-1990)
• for Yamaha XLV 540 (1979-1990)

On-The-Job Use

• Rebuilding Yamaha snowmobile engines
• Replacing pistons in high-mileage 540cc two-stroke motors
• Restoring power and reliability in vintage sleds
• Performing seasonal top-end maintenance

Specs At A Glance

Good To Know

Q: Are these piston kits complete with rings and pins? A: Yes, each kit includes a piston, ring set, and wrist pin with retainers for a direct replacement.

Q: Can these be used with a standard bore cylinder? A: Yes, these are standard bore pistons designed for a 73mm cylinder bore with no oversize needed.

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