SPI Standard Bore Piston Kit for Polaris 340 Snowmobiles Most 1994-2008 62.3mm

Standard Bore Piston Kit for Polaris 340 Snowmobiles

This standard bore piston kit is designed for Polaris 340 snowmobile engines from 1994 to 2008, providing a reliable replacement with a 62.3mm bore diameter.

Overview

This standard bore piston kit is built for the Polaris 340 two‑stroke engine, restoring lost compression and smooth operation. With a 62.3mm bore, this standard bore piston kit includes a properly gapped ring set for long service life on the snow.

Built For Performance

• Cast from high‑silicon aluminum for thermal stability
• Includes chrome‑coated rings for reduced wear
• Precision‑honed pin bore for exact wrist pin fit
• Lightweight design reduces reciprocating mass
• Compatible with both fan‑cooled and liquid‑cooled 340 Polaris engines

On-The-Job Use

• Snowmobiling on groomed trails and deep powder
• Engine rebuilding after a top‑end failure
• Racing and recreational riding
• Backcountry exploration and ice fishing access

Specs At A Glance

Good To Know

Q: Will this kit fit a Polaris 440 snowmobile? A: No, this standard bore piston kit is specifically for Polaris 340 engines; for 440 models you need a different bore size.

Q: Do I need to replace the cylinder when installing this piston? A: If the cylinder is within factory wear limits and not scored, you can reuse it after deglazing; otherwise a replate or new cylinder may be needed.

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