




COMPETITION DIRTBIKE MR300S
MR300S is a profesional competition bike of BOSUER M series dirt bike. The equipped with 300cc, double camsahft, water cooled, with internal balance shaft. Engine power is 23kw at 8500rpm, 4 valves.
- MR300S frame is made of alluminume. Forged alloy parts with strengthened formed alloy pipe connect together make the structure of the frame. With T4 & T6 treatment, the frame is not only less weight but also solid enough for competition.
- Other parts, such as rim, hub are all made of alluminume to reduce weight of the whole bike.
- Brake system are designed by BOSUER exclusively, new shape discs, double piston, MOJO brand as upgrade parts BOSUER.
- 21″ front Rim and 18″ rear rim are 7 series alloy, hollowed CNC alloy hub.
Engine: ZS NC300S 4-valve engine, double camshaft, 4-stroke, internal balance shaft, 6-speed, electric and kick 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 with power bomb
Technical Specifications
| ENGINE | Engine Type | 300cc , 4-stroke,4-valve,water-cooling, double overhead camshaft, with balance shaft |
| Bore X Stroke(mm) | 82.0×53.6mm | |
| Expression Rate | 11.8:1 | |
| Max Power | 23kW/9000rpm | |
| Max Torque | 25N.m/7000rpm | |
| Transmission | 6-speed | |
| Ignition | DC-CDI | |
| Carburetor | PZ38 | |
| Chain/Sprocket | 520-13/520-52CNC sprocket | |
| CHASSIS | Fuel Capacity | 6.5L |
| Handle Bar | Alloy, fat type, Ф28.5 | |
| Triple Clamp | Forged alloy 6061 | |
| Frame | Embracing high strengthened formed alloy | |
| Swing Arm | Formed alloy, knife shape | |
| Suspension | Front fork: 54/60-930mm, damping adjustment | |
| Rear shock: 480mm , inner box, damping adjustment | ||
| Disc Brake | Disc brake, disc size: front:240mm / rear:240mm | |
| Wheel | Alloy rim, CNC hub, rim size: front: 1.60-21/rear: 2.15-18 | |
| Tire | Tire size: front: 80/100-21 / rear: 100/90-18 | |
| DIMENSIONS | Max Loading | 90kg |
| Seat Height | 940mm | |
| Wheel Base | 1450mm | |
| Clearance | 290mm | |
| Dimession | 2170*820*1270mm | |
| Net Weight | 116±1KG | |
| Package Size | 1860*580*1080mm | |
| Gross Weight | 137±2KG |


