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.
Engine: CB250 2-valve engine, 4-stroke, 5-speed, electric and kick start
Frame: 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
| ENGINE | Engine | ZS CB 223cc,air cooled,2-valve,E&kick start,5 gear |
| Bore X stroke(mm) | 69*62.2mm | |
| Expression rate | 8.3:1-8.9:1 | |
| Max Power | 12KW/7000rpm | |
| Max Torque | 17N.m/6000rpm | |
| Transmission | 5 speed | |
| Ignition | CDI | |
| Carburetor | PE28 | |
| Transmission | #520 chain, 13T/45T | |
| CHASSIS | Frame | High strengthened steel frame, structured & engineered by BSE |
| Swing Arm | High strengthened steel swing arm, 18inches | |
| Triple Clamp | Forged alloy | |
| Suspension | Front fork: 53/58.5-880mm, compression & rebound adjustment | |
| Rearshock: 480mm inner air bag, compression & rebound adjustment | ||
| Brake | Disc brake, 240/240mm disc | |
| Wheel | Forged alloy hub, 7 series alloy rim | |
| tire: 80/100-21 100/90-18 | ||
| DIMENSIONS | Wheel Base | 1440mm |
| Seat Height | 920mm | |
| Clearance | 280mm | |
| Tank Capacity | 13L (with additional fuel tank) | |
| Dimession | 2100*810*1260 mm | |
| Net Weight | 112±1KG | |
| Gross Weight | 132±2KG | |
| Package Size | 1860*580*1080mm |