SPI Standard Bore Piston Kit for Arctic Cat 550 Snowmobiles 1991-2005 73.4mm

Standard Bore Piston Kit for Arctic Cat

This SPI standard bore piston kit is a direct replacement for Arctic Cat 550 snowmobile engines from 1991 to 2005, featuring a 73.4mm bore size to restore compression and performance.

Overview

This standard bore piston kit from SPI is designed for Arctic Cat 550 snowmobiles built between 1991 and 2005. It includes the piston, rings, wrist pin, and circlips for a complete rebuild. The 73.4mm piston kit matches the original bore size to bring your engine back to life.

Built For Performance

• High-silicon aluminum alloy piston for durability
• Precision-machined ring grooves for optimal seal
• Includes two compression rings and one oil ring
• Full-floating wrist pin design reduces friction
• Heat-treated steel circlips for secure retention

On-The-Job Use

• Rebuilding or refreshing a worn 550 engine
• Restoring power in vintage snowmobiles
• Trail riding where reliable engine performance is needed
• Competition snowcross requiring consistent output
• General maintenance to extend snowmobile life

Specs At A Glance

Good To Know

Q: Does this piston kit include the rings and wrist pin? A: Yes, the kit comes complete with the piston, two compression rings, one oil ring, wrist pin, and circlips.

Q: Can this piston be used in a 1998 Arctic Cat 550? A: Yes, this standard bore piston kit is designed for Arctic Cat 550 snowmobile engines from 1991 to 2005, covering the 1998 model year.

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