300cc Adult Gas Dirt Bike XB39 is a mid-to-high displacement off-road motorcycle designed for trail riding, dirt tracks, and advanced off-road training. It uses a 300cc single-cylinder four-stroke water-cooled engine with a manual clutch and 5-speed transmission. The 21/18-inch wheel setup, long-travel suspension, hydraulic disc brakes, and reinforced steel frame provide stable handling on uneven terrain. The model is suitable for distributors, off-road clubs, training centers, and recreational riding venues.
Specific Applications
XB39 300cc Adult Gas Dirt Bike is widely used for:
· Trail riding and forest road applications
· Off-road training and advanced riding instruction
· Dirt bike clubs and fleet-based training programs
· Professional or semi-professional dirt track practice
· Outdoor recreational and rental riding venues
Core Functions
· 300cc Water-Cooled Engine: The 300cc four-stroke engine provides strong low-end torque and extended high-rpm output. The stated maximum power is approximately 15-25 kW, with a stated top speed of approximately 100-110 km/h. This XB39 300cc Adult Gas Dirt Bike supports sustained riding in demanding off-road conditions.
· 5-Speed Manual Transmission: Manual clutch and 5-speed circular transmission provide full clutch and gear control for riders who need more advanced riding practice.
· Long-Travel Adjustable Suspension: The 910 mm inverted front fork provides approximately 220-240 mm of travel, while the 485 mm center monoshock provides approximately 200-220 mm of travel. Preload and rebound adjustment allow the setup to be adapted to trail and dirt-track conditions.
· 21/18-Inch Off-Road Wheels: The front 21-inch and rear 18-inch wheels use deep-tread off-road tires. This wheel combination helps improve traction and obstacle clearance on mud, sand, gravel, and uneven trails.
· High-Clearance Chassis: Approximately 280 mm of ground clearance provides additional space when riding over rocks, roots, and other trail obstacles.
· Hydraulic Disc Brakes: Large front and rear hydraulic disc brakes provide controlled braking response for downhill sections, corners, and changing off-road terrain.
· Dual Starting System: Electric start and kick start are available, providing flexible starting options for training and frequent off-road use.
Customization Service
OEM and ODM customization is available for XB39 300cc Adult Gas Dirt Bike to support different training, club, rental, and distribution requirements. Customization options can include:
· Engine and power configuration
· Suspension setup for trail or track use
· Speed limitation and power adjustment
· Custom body colors and graphics
· Customer logo and vehicle number
· Reinforced footrests and protective components
· Skid plates, handguards, and crash protection
· Customized packaging and product labels
| Technical Specifications | |
| Product Name | 300cc Adult Gas Dirt Bike |
| Model | XB39 |
| Engine | 300cc single‑cylinder four‑stroke water‑cooled |
| Maximum Power | Approx. 15‑25 kW |
| Top Speed | Approx. 100‑110 km/h |
| Transmission | Manual clutch, 5‑speed circular transmission |
| Starting System | Electric start + kick start |
| Front Suspension | 910 mm inverted fork, approx. 220‑240 mm travel |
| Rear Suspension | 485 mm center monoshock, approx. 200‑220 mm travel |
| Suspension Adjustment | Preload and rebound adjustment |
| Wheels & Tires | 21‑inch front / 18‑inch rear deep‑tread off‑road tires |
| Ground Clearance | Approx. 280 mm |
| Brakes | Front and rear hydraulic disc brakes |
| Seat Height | Approx. 88‑92 cm |
| Frame | High‑strength steel off‑road frame |
| Certifications | ISO9001 / CE / EPA / DOT / COC |
| Purchasing Information | |
| Standard Model MOQ | From 1 unit |
| Bulk Order Pricing | Tiered pricing available for orders of 50 units or more |
| Standard Lead Time | 7‑15 days, subject to stock and order quantity |
| Trade Terms | FOB / CIF / EXW available |
| Delivery Options | Overseas warehouse fulfillment and container shipping can be discussed |
| Production Capacity | Annual capacity stated as over 20,000 units |
| B2B Purchasing Note | For B2B purchasing of XB39 300cc Adult Gas Dirt Bike, buyers can confirm the required engine displacement, quantity, transmission configuration, application, customization requirements, and delivery schedule before quotation. |
Xmotos is a professional off-road motorcycle brand under Zhejiang Kukaqi Industry & Trade Co., Ltd. (formerly Zhejiang Aikeshi Vehicle Industry Co., Ltd.) and stands as the first manufacturer in China dedicated exclusively to off-road motorcycle production. Backed by the strong industrial strength of our parent company, Xmotos now employs 220 highly experienced staff, operates a factory spanning over 60,000 square meters, and features our very own professional test track. Every motorcycle must pass rigorous, end-to-end quality inspections before leaving the factory, ensuring that performance and safety meet international standards. In addition, we produce core components such as frames and plastic body parts in-house, and are equipped with a complete powder coating facility, giving us full control over quality and craftsmanship from the very source. The Xmotos team is wholeheartedly committed to building the highest quality off-road motorcycles for riders around the world. Quality and innovation are the uncompromising hallmarks of the Xmotos spirit.
Start Your Off Road Journey
+86 158 6791 6333
xmotos308@gmail.com
No. 2, Jinniu Road, Niubeijin Village, Baiyang Street, Jinhua, Zhejiang, China
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