Yamaha RX1 Piston Sets - Wiseco - 101 CR Turbo, 74.00 mm Bore, 10:1 CR - `03-`07 is a complete piston kit designed for RX1 models from 2003–2007. This Wiseco Forged Series kit provides the components needed for a reliable rebuild or performance-focused replacement.

Built from forged material for improved strength and service life, this Wiseco piston set is intended for 4-stroke Yamaha RX1 engines and is suitable where a 74.00 mm bore and a 10:1 compression ratio are required. Each kit includes the piston(s) plus the essential hardware for installation, and the forged construction helps resist wear under higher stress compared with cast alternatives. The design balances durability with the tolerances and fitment expected for OEM-style installations and mild performance modifications.

Features

• Forged piston construction for increased durability
• Includes wrist pin, rings, and circlips for a complete installation
• 74.00 mm bore size matched to '03–'07 Yamaha RX1 specifications
• Documented 10:1 compression ratio (Turbo 101 CR designation)

If you have questions or need guidance on fitment, call us directly — we can help confirm compatibility and discuss installation options. We have locations in Austin, Texas and the Los Angeles, California area where we offer installation and customization services. Call: 512-982-9393 (TX) or 562-981-6800 (CA).

If you are considering purchasing multiple items, contact us for shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov