kK29 YBS300 300cc 4-Stroke Water-Cooled Dirt Bike

Ideal for motocross practice, enduro trail riding and off-road riders who prefer smooth, reliable four-stroke power with easy control and steady throttle response.

Core Engine Performance

• Engine Model: 176MN, Vertical Single Cylinder, 4-Stroke, Water-Cooled, DOHC (Overhead Twin Cam)
• Displacement: 294ml
• Max Power: 21kW (28.55hp) @ 8500rpm
• Max Torque: 25N·m @ 7000rpm
• Bore × Stroke: 76mm × 65mm
• Compression Ratio: 11:1
• Ignition: CDI
• Fuel System: Carburetor
• Start Method: Electric + Kick Dual Start
• Clutch: Wet Multi-Plate
• Transmission: Constant mesh two-stage, 6-speed

Body & Dimension

• Overall Size: 2160 × 840 × 1250mm
• Seat Height: 930mm
• Minimum Ground Clearance: 300mm
• Wheelbase: 1470mm
• Net Weight: 118.3kg
• Fuel Tank Capacity: 7.8L
• Max Speed: 110km/h

Chassis, Suspension & Brake

• Front Shock Absorber: Up and down resistance adjustable
• Rear Shock Absorber: Single cylinder hydraulic airbag central shock
• Brake System: Front Disc + Rear Disc
• Wheel Size: Front 1.6×21 / Rear 2.15×18
• Tyre Spec: Front 80/100-21, Rear 110/100-18
• Battery: 12V 3.4Ah (Li-ion)

Key Highlights

• Vertical single-cylinder 4-stroke water-cooled engine with DOHC design for smooth, steady power delivery
• 21kW (28.55hp) output at 8500rpm with 25N·m torque at 7000rpm for reliable trail performance
• Electric + kick dual start design for reliable ignition in all conditions
• Adjustable front suspension + hydraulic airbag rear shock for excellent impact absorption
• High ground clearance for strong off-road passability over rocks and ruts
• 6-speed constant-mesh transmission for flexible control on climbs, trails and practice tracks
• 21-inch front / 18-inch rear wheels with front and rear disc brakes
• 12V 3.4Ah lithium-ion battery for dependable starting