790M08400 Wiseco Piston .120 for Yamaha Wave Raider 700 1994-1998 84 mm +3mm

Wiseco .120 Piston for Yamaha Wave Raider 700

This Wiseco .120 oversized piston, cross-referenced as 790M08400 with an 84 mm (+3mm) bore, is a replacement piston built to restore compression in Yamaha Wave Raider 700 engines that have been bored over.

Overview

This Wiseco .120 piston for Yamaha Wave Raider 700 watercraft is made for engines that need a larger bore after cylinder wear or damage. The 84 mm (+3mm) size works with a rebored cylinder to bring compression and power back to spec. It suits riders and mechanics rebuilding a Wave Raider 700 top end.

Built For Performance

• Forged piston construction for durability in high-rpm marine engines
• 84 mm (+3mm) oversized bore for rebored cylinders
• Wiseco 790M08400 part number for easy cross-referencing
• Engineered to withstand the heat and load of two-stroke jet ski use
• Oversized fit helps restore compression in worn or damaged cylinders

Fits These Machines

• for Yamaha Wave Raider 700, 1994-1998

On-The-Job Use

• Top-end rebuilds on Yamaha Wave Raider 700 personal watercraft
• Cylinders that have been bored over after wear or damage
• Restoring lost compression and performance
• Shop and DIY engine work where an oversized piston is required

Specs At A Glance

Good To Know

Q: Will this piston fit my stock cylinder? A: No, this is an 84 mm (+3mm) oversized piston that requires the cylinder to be bored to match. Confirm your cylinder has the correct overbore before ordering.

Q: How do I know which overbore size I need? A: The correct size depends on the condition of your cylinder after inspection or machining. Measure the bore before choosing a piston.

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