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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)
5cc 105+ octane
Honda CR250 Phathead cylinder head kit 1997-2001
KX Stroker insert for Hotrods crank (listed as +4mm) is actually a +2mm
Kawasaki KX125 Phathead cylinder head kit 1998-2000 Yamaha With a one way valveKawasaki KX125 Phathead cylinder head kit 1998 2000 Chamber selection: H11 8. 2cc Stock compression H12 7. 6cc (95+ octane) H13 6. 7cc (100+ octane) H14 5. 8cc (105+ octane) This kit includes the required engine mounts 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
US$ 40.00
US$ 94.00
US$ 82.00