Yamaha YFZ450 Piston Set - Wiseco - 11.4:1 CR - 2004-2013. A forged piston kit engineered to replace the stock piston in YFZ450 models from 2004 through 2013, offering a reliable rebuild option with a higher compression ratio for riders who want a durable, track-ready component.

This Wiseco piston kit is supplied as a complete package: forged piston, wrist pin, rings, and circlips. The piston is built from forged material to withstand high-stress conditions common to off-road and sport use while maintaining consistent ring sealing and service life. The 96.00 mm bore and 11.4:1 compression ratio match established specifications for tuned applications where a modest compression increase is desired without changing standard installation practices. Ideal for enthusiasts rebuilding or upgrading an engine, the kit is dimensionally accurate and compatible with YFZ450 engines from the stated years.

Features

• Forged piston construction for strength and durability
• Complete kit includes piston, wrist pin, rings, and circlips
• 96.00 mm bore to match specified cylinder sizes
• 11.4:1 compression ratio for tuned rebuilds
• Designed for Yamaha YFZ450 2004-2013 applications

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

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