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ST04-BWM2 Motorcycle Series – High-Performance, Reliable, and Built for Adventure

The ST04-BWM2 motorcycle model represents a premium lineup of four-stroke engine motorcycles designed for riders seeking power, comfort, and durability across diverse terrains. Whether you're commuting through city streets or exploring off-road trails, this versatile range offers multiple displacement options—from 150cc to 400cc—each engineered with precision engineering and modern technology to deliver exceptional performance and rider satisfaction.

This product line includes models like the ST04-BWM2 150cc, 200cc, 250cc, and 400cc variants, all built on a consistent platform that emphasizes reliability, safety, and fuel efficiency. Each variant features an air-cooled or water-cooled engine system depending on displacement, ensuring optimal temperature control under various riding conditions. From compact urban use to highway cruising, these bikes offer tailored solutions for different rider needs.

Key Features That Set It Apart

• Engine Performance: The 150cc CGB engine delivers 8.5kW at 8,000 rpm, while the 400cc water-cooled twin-cylinder unit reaches 25.5kW at 7,600 rpm—ideal for high-speed travel and responsive acceleration.
• Braking System: Equipped with dual front disc brakes and single rear discs, the ST04-BWM2 series ensures confident stopping power even during aggressive maneuvers.
• Suspension & Handling: Hydraulic suspension systems at both front and rear provide smooth handling over uneven surfaces, enhancing ride comfort and stability.
• Fuel Efficiency: With consumption rates between 2.2L/100km (150cc) and 2.6L/100km (400cc), these motorcycles are efficient for long-distance touring without compromising performance.
• Starting Mechanism: Electric start combined with kick-start functionality ensures reliable ignition in all weather conditions, eliminating common starting issues faced by traditional models.

Detailed Technical Specifications

The ST04-BWM2 series showcases advanced engineering across its entire range. For example, the base 150cc model has a bore and stroke of 62×49.5mm, a compression ratio of 9.2:1, and a maximum speed of 90 km/h, making it perfect for daily commuters. As displacement increases, so does output: the 250cc version achieves 12kW at 7,500 rpm and a top speed of 125 km/h, while the flagship 400cc model boasts a powerful double-cylinder engine with 6-speed transmission, delivering 25.5kW and reaching speeds up to 160 km/h. All models share a 1430mm wheelbase, 17.5L fuel tank capacity, and 150kg payload limit—ensuring balanced weight distribution and practical utility.

Each variant uses CDI ignition for consistent spark delivery, air-cooled systems for the smaller engines (up to 250cc), and a water-cooled setup for the 400cc model to manage higher thermal loads. Tire sizes remain uniform across models—110/70-17 front and 140/70-17 rear—for predictable handling and tire compatibility. The net weight ranges from 136kg (150cc) to 140kg (200cc–400cc), offering agility without sacrificing robustness.

Where This Bike Shines: Ideal Use Cases

Designed for global riders aged 18 and above, the ST04-BWM2 series excels in multiple environments. Urban riders benefit from its compact frame, low maintenance, and excellent fuel economy—perfect for navigating traffic efficiently. Long-distance travelers appreciate the ergonomic design, stable suspension, and ample storage space for gear. Off-road enthusiasts will find the ground clearance (160–170mm) and durable construction ideal for Light trail riding or weekend adventures.

These motorcycles are also suitable for commercial use such as delivery services, tour guides, or personal transport in regions where small-displacement vehicles are preferred due to licensing requirements or environmental regulations. Their SKD (Semi-Knocked Down) packaging allows easy shipping and assembly, making them a smart choice for importers and distributors worldwide.

User Feedback Highlights

Reviewers consistently praise the ST04-BWM2’s balance of affordability and performance. Riders note the ease of starting, especially in cold climates, thanks to the dual-start system. Many highlight the smooth ride quality provided by hydraulic suspensions and the confidence-inspiring braking system. Some users mention that the 250cc model strikes the best compromise between speed, comfort, and fuel economy for regular highway use. Overall, customers value the build quality, consistency across variants, and strong after-sales support in international markets.

Frequently Asked Questions

Is this motorcycle suitable for beginners? Yes, especially the 150cc and 200cc versions, which offer manageable power delivery and lightweight handling ideal for new riders learning throttle control and braking techniques.

What kind of maintenance is required? Routine checks include oil changes every 5,000–7,000 km, spark plug replacement annually, and inspection of brake pads and tires. Air filters should be cleaned regularly, particularly in dusty environments.

Can I modify the engine for more power? While some owners upgrade exhausts or air intakes, it's important to ensure modifications comply with local emissions standards and do not void warranties. Always consult a certified mechanic before any major alterations.

How does it perform in wet conditions? The dual-disc front brakes and consistent tire tread patterns provide reliable grip in rain, though riders should reduce speed and avoid sudden braking when roads are slippery.

Whether you're looking for a dependable commuter, a capable adventure bike, or a cost-effective entry point into motorcycling, the ST04-BWM2 series delivers real-world value backed by proven engineering and thoughtful design.

Product Categories : Racing Motorcycle