Yamaha 450R Piston Set - Wiseco - Forged Series, 12.4:1 CR, 96.00 mm Bore - `09-`19. A complete forged piston kit engineered for Yamaha 450R applications, supplied with the hardware needed for installation.

This Wiseco Forged Series piston is built for a broad range of 4-stroke uses, including ATVs, dirt bikes, UTVs and similar platforms. The forged construction improves resistance to the high-stress conditions typical of aggressive riding, while the 96.00 mm bore and 12.4:1 compression ratio match the specifications for Yamaha 450R models from 2009–2019. Each kit includes a wrist pin, piston rings and circlips so you receive a complete package ready for assembly. The design focuses on durability and service life without overstating performance changes; it’s a direct-fit replacement intended for customers who require reliable components for rebuilds or custom engine work.

Features

• Forged construction for improved strength and longevity
• 96.00 mm bore, 12.4:1 compression ratio matched to Yamaha 450R ('09–'19)
• Complete kit: piston, wrist pin, rings and circlips included
• Designed for 4-stroke applications across ATVs, dirt bikes and UTVs

If you have questions about fitment, installation or compatibility with your build, give us a call — we’re happy to help. We offer installation and customization services at two locations: Austin, Texas and the Los Angeles, California area. Call 512-982-9393 (TX) or 562-981-6800 (CA) to speak with a technician or schedule service. If you’re thinking about purchasing multiple items, contact us for potential shipping discounts. We install on premises at both locations.

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