PhatheadRacing
Honda CR125 Phathead combustion chamber
Couldn't load pickup availability
Honda CR125 Phathead cylinder head kit 1992-1999
Chamber selection:
H13 - 6.7cc stock compression
H14 - 5.8cc high compression
Honda CR125 Phathead cylinder head kit 2000-2003
Chamber selection:
H11 - 8.2cc Stock compression
H12 - 7.6cc (95+ octane)
H13 - 6.7cc (100+ octane)
H14 - 5.8cc (105+ octane)
Honda CR125 Phathead cylinder head kit 2004=2007
Chamber selection:
K10 Stock
K11 - 9.2cc (95+ octane)
K12 - 8.5cc (100+ octane)
![Honda CR125 Phathead combustion chamber](http://phatheadracing.com/cdn/shop/products/image_9136e52f-9a21-459f-998b-e3825d800685_1445x.jpg?v=1665704810)