GasBike Racer Chain Drive Kit with HuaSheng 49cc 4-Stroke Engine Gas Motori

NOTE: If you have a bicycle with a one-piece crank, you will need to buy a bottom bracket conversion kit separately. Please select option above. GasBike Racer Chain Drive Kit with HuaSheng 49cc 4-Stroke Engine This kit features a 49cc HuaSheng motor with Clutch Flyweight for 5/8 Tapered Shaft, using a chain drive single speed transmission. This kit includes a 2 piece wide crank kit, if the bike has a 1 piece crankset a conversion bottom bracket will need to be used. 4 Stroke engine kits are very different from 2 stroke kits in many ways. Building a 4 stroke bike is a little more involved then the two strokes, the extra effort is worth it. Pull start engine, not push start like the 2 strokes. Overall this type of engine is more reliable with more power and torque. With some of the larger cc motors, the top speeds far exceed the 2 strokes. Since these motors are larger in cc they are also larger in size and weight. Almost all bicycles will need to use a wider crank setup to clear the