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KOSO 34mm - For use with KOSO Manifold sold through CJR (49mm mounting OD Diameter for intake/filter) - Not confirmed for CRF125 fitment
Ours come installed with heavy springs much better suited for adult riders
heat resistance and hardness/strength of the carburetor
These kits can can make as much power as the larger 125cc Chinese engines
Designed for riders wanting a kickstand for everyday riding or the ability to quickly remove it before a race
Tusk 420 Race Chain - Non O-Ring - 120 Links pro-circuit KOSO 34mm - For useTusk 420 Non O ring Race Chain 120 Links Details The Tusk 420 Race Chain is a great option for any Pitbike using the 420 size chain. This high quality European made chain is built for performance and durability. A clip style master link is included. Will require you to cut to length unless you need exactly 120 links. Please be sure to select your desired style from the drop down menu. Gold Plated = Average tensile strength of 4,950 lbs. Black =