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J4 is a full size bike of BOSUER series dirt bike. The bike designed as a dural bike. The bike equipped with ZS CB 230 engine, air cooled, 4-stroke, both kick & E start. The engine power is 12kw, it is easy control and stable engine.




ZS CB 223cc,air cooled,2-valve,E&kick start,5 gear

product Descriptions

The engine is fixed with BOSUER featured engine cover engraved with MOJO logo as BOSUER upgrad parts. 

J4 chassis is made of steel, formed parts and high strengthened steel pipe connect together orgnize the structure. For being a dural bike, J4 equipped with additional 6.5L fuel tank for distant travel, the fuel pumped from rear to main tank. The bike also fixed with passenger's foot rest and baggage bracket upon  tail fender.



CB250 2-valve engine, 4-stroke, 5-speed, electric and kick start

Steel full size dirt bike frame with linkage, steel swing arm

Wheel: Front 21", rear 18"

Suspension: adjustable

Brake system: Mojo brake, 2 pistons of front brake, 1 pistion rear

Muffler & exhaust pipe: stainless steel exhaust pipe, alloy muffler body and nilon end

ENGINEEngineZS CB 223cc,air cooled,2-valve,E&kick start,5 gear
Bore X stroke(mm)69*62.2mm
Expression rate8.3:1-8.9:1
Max Power12KW/7000rpm
Max Torque17N.m/6000rpm
Transmission5 speed
Transmission#520 chain, 13T/45T
CHASSISFrameHigh strengthened steel frame, structured & engineered by BSE
Swing ArmHigh strengthened steel swing arm, 18inches
Triple ClampForged alloy
SuspensionFront fork: 53/58.5-880mm, compression & rebound adjustment
Rearshock: 480mm inner air bag, compression & rebound adjustment
BrakeDisc brake, 240/240mm disc
WheelForged alloy hub, 7 series alloy rim
tire: 80/100-21 100/90-18
DIMENSIONSWheel Base1440mm
Seat Height920mm
Tank Capacity13L (with additional fuel tank)
Dimession2100*810*1260 mm
Net Weight112±1KG
Gross Weight132±2KG
Package Size1860*580*1080mm

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