4894M07900 Wiseco Std Piston Kit for Yamaha RS Vector 2005-2007 79.00mm 9.5:1 CR

Wiseco Std Piston Kit for Yamaha RS Vector

This Wiseco standard bore piston kit for Yamaha RS Vector snowmobiles uses a 79.00mm piston with a 9.5:1 compression ratio, cross-referenced to 4894M07900.

Overview

This Wiseco standard piston kit for Yamaha RS Vector models is a direct-fit replacement that keeps your engine at its factory bore size. The 79.00mm piston with a 9.5:1 compression ratio restores reliable performance for riders doing a top-end rebuild. It suits trail riders and mechanics who want a dependable stock-spec piston for the RS Vector engine.

Built For Performance

• 79.00mm standard bore diameter for stock cylinder fitment
• 9.5:1 compression ratio for factory-spec power delivery
• Forged construction for strength and long service life
• Cross-reference 4894M07900 for exact part identification
• Wiseco design built for Yamaha RS Vector 2005-2007 engines

Fits These Machines

• for Yamaha RS Vector 2005
• for Yamaha RS Vector 2006
• for Yamaha RS Vector 2007

On-The-Job Use

• Top-end rebuilds on RS Vector snowmobile engines
• Stock bore piston replacement during engine refresh
• Trail and lake riding where factory power is wanted
• Repair work when the original cylinder remains in spec

Specs At A Glance

Good To Know

Q: Does this piston require cylinder boring? A: This is a standard bore piston, so it fits a cylinder that is still within factory spec at 79.00mm. Measure your cylinder before ordering to confirm it does not need to be bored.

Q: What engine does this piston kit suit? A: It is designed for Yamaha RS Vector engines from 2005 through 2007. Verify your model year and serial number before purchasing.

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