Yamaha YFZ450 Valve Seal Kit (2004-2009) – Intake & Exhaust, 53Cr21Mn9Ni4N Steel

Rebuilding the top end on your YFZ450?

Don't forget the valve seals.

This kit includes both intake and exhaust seals for Yamaha YFZ450 models from 2004 through 2009.

They're made from high-quality 53Cr21Mn9Ni4N steel, which handles heat and wear like a champ.

Reference OEM numbers are 5TA-12112-00-00, 5TA-12111-00-00, and 5TA-12121-00-00.

These are new, unbranded but meet OE specs.

Comes with a 90-day warranty, so you're covered after the rebuild.

If your quad is smoking on startup or burning oil, these seals might be the fix.

Simple but crucial part—get your top end sealed up right.