SPI Piston Kit for Yamaha Enticer II 400 410 ET400TR ET410TR Standard Bore 66mm

SPI Piston Kit for Yamaha

This SPI piston kit replaces the original pistons in Yamaha Enticer II 400, 410, ET400TR, and ET410TR snowmobiles with a standard bore of 66mm, providing a direct replacement for engine rebuilds.

Overview

This SPI piston kit is designed for Yamaha Enticer II 400, 410, ET400TR, and ET410TR models, utilizing a standard 66mm bore size. It restores compression and performance in your two-stroke snowmobile engine. This piston kit is a reliable choice for rebuilds and top-end overhauls.

Built For Performance

• Precision-machined from high-silicon aluminum alloy for strength and heat resistance
• Includes chrome-plated piston rings for reduced wear and long life
• Comes with wrist pins and circlips for a complete installation
• Weight-matched pistons for balanced engine operation
• Standard bore size for direct replacement without cylinder boring

Fits These Machines

• for Yamaha Enticer II 400
• for Yamaha Enticer II 410
• for Yamaha ET400TR
• for Yamaha ET410TR

On-The-Job Use

• Trail riding and recreational snowmobiling with reliable engine performance
• Replacing worn pistons after high-mileage use
• Rebuilding engines after top-end failure for extended service life
• Restoring lost power in older sleds

Specs At A Glance

Good To Know

Q: What is included in this piston kit? A: The kit typically includes two pistons, rings, wrist pins, and circlips for a complete rebuild on twin-cylinder engines.

Q: Does this kit require cylinder boring? A: No, this is a standard bore kit designed for original cylinders that are within specification, but always measure your cylinder bore before ordering.

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