Yamaha RIVA Pro-Series 4-Stroke Pistons

Our forged racing pistons deliver maximum reliability and performance in high boost & turbo applications. High strength piston kits include premium ring package, tool steel wrist pin & carbon steel wire locks.

Key Features Include:

• CNC machined from high strength/lightweight forgings.
• Optimized dome design for efficient combustion.
• Improved lubrication hole placement for reduced friction.
• Premium low friction ring package.
• High-strength tool steel wrist pins machined from special tool steel bar stock & heat treated.
• Carbon steel wire locks.
• Available in various bore sizes.

NOTE: Oversized pistons require 87mm head gasket (part# RY10040-CHG-87).