Description

The Yamaha YFZ 450 Top End Rebuild Kit is designed to restore compression and sealing on worn engines. It’s the right move when blow-by, oil use, or low compression start cutting into ride time.

Each component is selected to meet REV6 standards and backed by a 1-year parts warranty. This setup keeps the rebuild straightforward while delivering dependable results once everything is torqued down.

THIS KIT INCLUDES

• Forged piston kit (11.4:1 stock ratio)
• Top-end gasket set

LEARN MORE & GET SUPPORT

See how coverage works on our warranty information page, dig into rebuild advice on the REV6 blog, check common build questions in the FAQ section, or get in touch with our support team for guidance.

FITMENT

Yamaha YFZ 450
2006–2009

TAKE ACTION
If your top end is tired and losing seal, this kit is ready to put it back where it belongs. Ships nationwide and built to hold up—add it to your cart and finish the job right.

Your service matters to us—veterans receive special pricing at REV6.