SPI .010 Over Bore Piston Kit for Yamaha Excel V 540 & XLV 540 1979-1990 73.25mm

SPI .010 Over Bore Piston Kit for Yamaha

This SPI .010 over bore piston kit is designed to restore compression and power in Yamaha Excel V 540 and XLV 540 snowmobile engines, using a 73.25mm bore and .010 over size to compensate for cylinder wear.

Overview

This SPI .010 over bore piston kit is a direct replacement for worn pistons in Yamaha Excel V 540 and XLV 540 snowmobile engines from 1979 to 1990. The 73.25mm bore and .010 over size help restore cylinder compression and improve engine performance. Ideal for riders needing a reliable piston kit for their vintage Yamaha snowmobile.

Built For Performance

• Precision-machined from high-strength cast aluminum alloy
• Includes two compression rings and one oil ring for effective sealing
• Wrist pin and retaining circlips included for complete installation
• Engineered for .010 over bore to match cylinder wear
• Designed to OE specifications for Yamaha Excel V and XLV engines

Fits These Machines

• for Yamaha Excel V 540
• for Yamaha XLV 540

On-The-Job Use

• Engine top-end rebuild after high mileage
• Restoring compression and power in vintage snowmobiles
• Commonly used during off-season maintenance
• Suitable for trail riding and recreational snowmobiling

Specs At A Glance

Good To Know

Q: Will this piston kit fit my Yamaha Excel V? A: This kit is designed for 1979-1990 Yamaha Excel V 540 and XLV 540 models with the stock 73.25mm bore. Confirm your engine code before ordering.

Q: Does the kit include rings and wrist pin? A: Yes, the kit comes complete with piston, rings, wrist pin, and circlips for a full top-end rebuild.

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