4808M07400 Wiseco Std Piston Kit for Yamaha RX-1 2003-2007 74.00mm 10:1 CR

Wiseco Std Piston Kit for Yamaha RX-1

This Wiseco standard bore piston kit for Yamaha RX-1 snowmobiles (2003-2007) refreshes top-end compression with a 74.00 mm piston and 10:1 compression ratio, cross-referencing part 4808M07400.

Overview

This Wiseco piston kit for Yamaha RX-1 models from 2003 to 2007 is a standard bore top-end replacement engineered to restore factory compression. The 74.00 mm piston and 10:1 compression ratio match original RX-1 specifications. It suits riders rebuilding a worn top end or refreshing an engine before the season.

Built For Performance

• Standard 74.00 mm bore size matches original RX-1 cylinder dimensions
• 10:1 compression ratio for stock-equivalent power delivery
• Forged piston construction for strength under high-rpm snowmobile use
• Kit cross-references part number 4808M07400
• Complete piston kit with rings, pin, and clips for a full top-end rebuild

Fits These Machines

• for Yamaha RX-1 2003
• for Yamaha RX-1 2004
• for Yamaha RX-1 2005
• for Yamaha RX-1 2006
• for Yamaha RX-1 2007

On-The-Job Use

• Top-end rebuilds on high-mileage RX-1 snowmobiles
• Off-season engine refresh before winter riding
• Restoring lost compression in a worn cylinder
• Trail and backcountry RX-1 servicing

Specs At A Glance

Good To Know

Q: Does this kit fit a stock RX-1 cylinder? A: Yes, the 74.00 mm standard bore matches the original RX-1 cylinder dimensions. Always check your engine serial number and measure bore wear before ordering.

Q: Are rings and pin included? A: This is a complete piston kit with rings, pin, and clips for a top-end rebuild. Confirm your model year and existing piston size before purchase.

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