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

SPI Standard Bore Piston Kit for Yamaha

This SPI standard bore piston kit is a direct replacement for Yamaha Excel V 540 and XLV 540 snowmobiles from 1979 to 1990, featuring a 73mm bore size to restore compression and engine performance.

Overview

The SPI standard bore piston kit provides a complete piston assembly for Yamaha 540cc snowmobile engines, designed to replace worn pistons and restore original performance. This kit is ideal for enthusiasts rebuilding their Excel or XLV models, ensuring a proper fit and reliable operation. The 73mm bore size matches factory specifications for these engines.

Built For Performance

• Constructed from high-strength aluminum alloy for durability
• Includes piston, rings, wrist pin, and circlips for a complete rebuild
• Precision machined to 73mm standard bore tolerance
• Designed to withstand high-revving two-stroke engine conditions
• Direct replacement for OEM Yamaha 540cc piston assemblies

Fits These Machines

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

On-The-Job Use

• Restores lost compression and power in snowmobile engines
• Commonly used in winter trail riding and racing applications
• Replaces worn pistons during engine overhaul or top-end rebuild
• Ensures reliable operation in cold starting and sustained high RPM

Specs At A Glance

Good To Know

Q: Is this kit compatible with my 1985 Yamaha Excel V 540? A: Yes, this standard bore piston kit is designed for 1979-1990 models, but always verify your engine serial number to ensure correct fitment.

Q: Does the kit include all necessary parts for installation? A: The kit includes the piston, piston rings, wrist pin, and circlips, providing everything needed for a complete piston replacement.

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