Professional Installation Is Highly Recommended. GEAR SYSTEM : 3 FORWARD; NEUTRAL; REVERSE. Type : Horizontal, single-cylinder, 4-stroke, air-cooled. Bore x Stroke : 52.4 × 55.5 mm, 119.7 mL.
Bolt to Bolt :152mm (6). Compression ratio : 9.0: 1. Maximum net power/ rpm : 5.8 kw/ 7500r/ min±375 r/ min. Maximum torque/ rpm : 8.5 N. Atomik, Pitpro, TDR, Hummer, Orion, Xmoto, Lei, Dmx, Swd, Tommahawk, Monsoon, Grudge, Kazuma, Bull.
Trooper, Hunter, Motox, Trojan, Blitz, Crusade, Link, Bigfoot, Kuda, Motorworks, Nitrous, Reign, ddr, Fury, Prox. Raider, Zongshen, Chongqing, Loncin, Ducar, Lifan, Gy6, Thumpster, Thumbstar, Go kart, Quad, Dirt bike, ATV. Pit bike, Dirt bike, Buggy, Pocket rocket. Five wires (Plug): For gear indicator. Yellow wire: For storage battery.
Pink (or Yellow) wire: For storage battery. Black & Red wire: For signal trigger. Blue & White: For trigger coil. It comes with:Wiring+ carby+Airfilter+ Chain case + Gasket As you see in the picture.