Carrillo MX3031C Top End Rebuild Kit 13.5:1 Suzuki RM-Z250 2010-2020

The CP-Carrillo MX3031C is a high-performance top end rebuild kit engineered for the Suzuki RM-Z250, delivering race-proven reliability and performance gains over the stock configuration. This kit is built around a 13.5:1 compression ratio forged piston with a 77mm standard bore and 53.6mm stroke, displacing 249cc — maintaining OEM bore size while maximizing compression for peak power output.

CP-Carrillo pistons are precision CNC-machined from high-strength forged aluminum and manufactured entirely in the USA. Each piston undergoes a rigorous multi-step inspection process to ensure dimensional accuracy, proper fitment, and long-term durability under the extreme demands of motocross racing.

Kit Contents & Specifications:

• Bore: 77mm (standard)
• Compression Ratio: 13.5:1
• Stroke: 53.6mm
• Displacement: 249cc
• Piston #: M3031C
• CPK #: CPK3031C
• Rod #: 8810
• Forged aluminum piston construction
• Piston rings included
• Wrist pin and locks included

As a combined CP Pistons and Carrillo Industries brand, CP-Carrillo brings decades of motorsports engineering experience to every component. The MX3031C kit is a direct-fit solution for riders looking to restore or upgrade their RM-Z250 top end with components trusted by professional and amateur motocross racers alike.