· Engine: 390cc GX390, 420cc Predators, & 13/15 hp OHV. · Spring Pressure (In / Ex): 65 lbs Dual Spring. The P-Open is intended for a full tilt modified or open class. Upgraded valve springs, billet rod, and billet flywheel are mandatory.
Brand: bike boss
Country/Region of Manufacture: United States
MPN: Does Not Apply
UPC: Does not apply
Related Camshaft, Dyno Cams P-Open, GX390 and 13/15hp OHV - N2
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