9 zinc plated steel sprocket bolts with factory style class 10
Highly compressed construction avoids swell and clutch drag
Roughly 2"x3" in dimension with a patented design of taller teeth on the outside edge of the peg for better control and riding performance
KLX110 type race head
It also works on most of the Chinese 50/70 copy engines
90cc Piranha engine kit semi-auto Stickers/Graphics 9 zinc plated steel sprocketPIRANHA 90cc Engine KIT includes 90cc Engine, NIBBI 18mm Carburetor, Wire Harness, CDI, and Ignition Coil. This engine is a great update for any pit bike, Honda CRF50, Z50, Trail 70, and ATC70! Features: Big Valve E22 Performance Head 4 Speed semi auto transmission (4 gears Up) Comes complete with Kicker, Intake Manifold, Gaskets, and Gear Shifter. Engine Displacement 86cc Engine Type Air Cooled, Single Cylinder, 2 valve, 4 stroke Bore Stroke 47mmx49.