J1 is a full size bike of BOSUER dirt bike series. It is equipped with ZS CBS300 engine, water cooled, with internal balance shaft. The engine power is 18.5kw at 8500rpm, 4 valves. The bike is designed for dural popures.

  • Chassis is one of BOSUER full size steel frame with linkage, formed steel parts and strengthened steel pipe structured together making the whole bike solid enough not only for dural popurse but also for competition.
  • Swing arm, triple clamp, linkage are in alloy material to reduce weight of whole bike maximally.
  • The suspenssion are adjustable both front and rear.Brake sysytem are deisgned by BOSUER exclusively with MOJO logo as upgrade parts of the bike.


Engine: ZS CBS300S 4-valve engine, 4-stroke, internal balance shaft, 6-speed, electric start
Frame: steel full size dirt bike frame with linkage, alloy swing arm
Wheel: front 21″, rear 18″
Suspension: adjustable
Brake system: Mojo brake, 2 pistons of front brake, 1 pistion rear
Muffler: stainless steel


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