300CC Water Cooled Nb300 Dirt Bike | Water-Cooled Balance-Shaft NB300 4-Stroke Adult Enduro Motorcycle, YKF-6
The 300cc water cooled nb300 dirt bike gives riders a clear, purpose-built option for trail and enduro riding. It uses a four-stroke, water-cooled, built-in balance shaft NB300 engine with 19kW of listed output. The powertrain also includes a PWK34 carburetor, electric and kick starting, and a 6-speed transmission. These features define how the bike starts, receives fuel, and transfers engine power. The adjustable suspension lets riders change the chassis settings, while disc brakes and 340mm of ground clearance help complete the off-road setup.
| Engine Type | 4-Stroke, Built-in Balance Shaft, NB300, Single cylinder, Water-cooled |
|---|---|
| Displacement (cc) | 300CC |
| Max Power (kW/rpm) | 19KW/8500rpm |
| Max Torque (N.m/rpm) | 24N.m/7500rpm |
| Start Mode | Electric / Kick Start |
From
| Quantity | Price | Discount |
|---|---|---|
| 1-4 | $2,087.00 | $0.00 |
| 5-50 | $1,523.51 | 27% |
| 51+ | $1,398.29 | 33% |
Orders are confirmed by quotation and Proforma Invoice. T/T, L/C for qualified bulk orders, and Alibaba trade assurance are available upon request.
Each vehicle is inspected before shipment. Photos, videos, packing details, commercial invoice, and packing list can be provided.
Accessories Purchase
Vetted-supplier sourcing of frames, engines, drivetrain & electricals with full traceability.
Incoming Quality Control
AQL sampling on every inbound lot; non-conforming parts rejected and returned.
Product Assembly
Torque-controlled assembly lines with station-level checklists for ATV, UTV, dirt & pit bikes.
Process Quality Control
In-line inspection at critical stations; defects routed back to assembly for rework.
Finished Product
Engine run-in, brake, lighting, throttle and road-test verification on each unit.
Outgoing Quality Control
Pre-shipment AQL audit per ANSI/ASQ Z1.4; any failure loops back to assembly.
Finished Goods Warehousing
Climate-controlled storage, serialized bin locations and FIFO dispatch queue.
Packing & Shipping
Export-grade crating, fumigation, container loading plans and BL documentation.
Closed-loop rework
When PQC or OQC detects a non-conformity, the affected unit is routed back to Product Assembly with a traceable defect ticket. Nothing moves forward until it passes — zero-escape to our customers.
