Yamaha YZ125 Phathead cylinder head kit 2005-2026 Color:Red 6061 T6 billet aluminum body

6061 T6 billet aluminum body

KX250F (2006-2010)

Chamber selection:Y21 - 21

With a one way valve built in to the breather vent designed to block the outflow of fuel when the tank is upside down(crash scenario)

Yamaha YZ125 Phathead cylinder head kit 2005-2026 Color:Red 6061 T6 billet aluminum bodyYamaha YZ125 Phathead cylinder head kit 2005 2026 Chamber selection: FX11 8. 3cc Stock FX12 7. 8cc (95+ octane) FX13 7. 2cc (100+ octane) Phathead Kits include a head shell with one combustion chamber, two sets of o rings, cylinder head nuts, copper washers, some stickers for your bike and tool box and installation instructions.. Phathead cylinder heads are made of 6061 T6 billet aluminum. The material is stronger and transfers heat better than cast