J10 is a middle size bike of BOSUER dirt bike family. The bike fixed with a BOSUER exclusively designed engine, the engine MOJO 250cc is air cooled, 4-valve.Its cylinder cover is designed as a squre shape and cant assembling edge for easy removing from engine, it is convenient for reparing the engine. The engine produce 18.5kw at 7500rpm, no other same class engine can produce more power than it.

  • Featured engine cover modified with MOJO logo on it and shows that it is a high performance of BOSUER products.
  • The chassis of the bike is made of steel, died cast steel with high strengthened formed steel parts orgnize the frame structure, ensure it is solid enough for competition.
  • Alloy swing arm fixed with the bike gurantee the whole bike reduce weight max and also good looking.
  • Brake system are created and modified by BOSUER exclusively with Mojo logo on calipers show that it is high performance parts from BOSUER.


Engine: CB250 4-valve engine, 4-stroke,5-speed, electric start
Frame: middle 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 with bomber

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product features

Product parameters 

Product parameters 

ENGINEEngine Type:MOJO 250cc, 4-Valve, single cylinder, air cooled, E & Kick start
Bore X Stroke:72*61.4mm
Compression Rate:9.25:1
Max Power:18.5KW/7500rpm
Max Torque:20N.m/6500rpm
Valve System:5-speed
Gear Ratio520-13/520-49
CHASSISHandle BarAlloy, fat shape
Triple Clampforged alloy
Framehigh strengthened steel, with linkage
Swing ArmAlloy
Front Fork54/60-880mm, adjustable
Rear Shock450mm, air bag, adjustable
Disc Brake Sysfront/rear disc: 240mm
Wheel Sizealloy rim 1.6-21 2.15-18
Tire Size80/100-21 120/90-18
DIMENSIONSMax Loading90kg
Fuel Tank Capacity6.3L
Seat Height910mm
Wheel Base1410mm
Net Weight110±1KG
Package Size1770*480*960mm
Pacing Carton Size1790*500*960mm
Max Packing Weight120±2KG