
Fast transmission models include: RT-11509C model, RT-11909C model, and RT-16009C model. The meaning of RT-11509C model: R stands for range shift, T stands for mechanical type, 11 means the maximum input torque is 1100N*M, 5 represents the gear thickness as coarse teeth, and 09 represents the number of gears. Additional information: Fast, the full name is Shaanxi Fast Auto Drive Group Company Limited, was restructured from the Shaanxi Automobile Gear Factory with a registered capital of 500 million yuan and total assets of 3 billion yuan. It is a large-scale specialized production base mainly manufacturing heavy-duty vehicle transmissions, transfer cases, power take-offs, and various automotive gears and their forged and cast components.

















I've been in long-distance transportation for over a decade, and FAST (Fashite) transmissions are quite common with numerous models. The RT series like RT11509C is suitable for medium trucks, offering smooth driving and fuel efficiency; the HW series such as HW19710 is used in heavy-duty trucks, handling heavy loads without issues; there are also lightweight options like the S series (e.g., S1600) and C series. FAST transmissions are renowned for durability—with proper , they can last over a million kilometers without breaking down, though maintenance cycles vary by model (RT requires more frequent oil changes). My truck is equipped with an HW19710, which feels powerful yet energy-efficient. When selecting a model, consider vehicle type and load capacity—don’t just go for the cheapest option. The brand updates quickly, and their new ZF collaboration series is reportedly good, though I haven’t personally tried it yet. Overall, FAST is a reliable partner for truck drivers—just monitor oil temperature to avoid minor issues.

When repairing vehicles, the Fast gearbox is often encountered, with a relatively comprehensive model system. The core model RT11509C is widely used in ordinary trucks; the HW19710 belongs to the heavy-duty series, featuring high transmission efficiency; the S series, such as the S1600, is suitable for light trucks; the C series is newer and optimized for vibration reduction. These Fast gearboxes are structurally robust and not prone to failure, but most faults stem from deteriorating oil quality, so it is recommended to regularly check the oil level and replace the filter. Different gearbox models have significant differences in gear ratios and oil volume requirements. The RT series requires an oil change every 50,000 kilometers, while the HW can last up to 80,000 kilometers. When diagnosing problems, start with the basics—listen for sounds to identify wear locations. The model identification is clearly marked on the gearbox housing, and avoid letting inexperienced hands randomly adjust screws. Remember, proper extends service life and saves fuel, making it the preferred choice for truck experts.

My old truck is equipped with a FAST RT11509C transmission, which provides strong and stable power. FAST offers a wide range of models, such as the HW series (HW19710), S series (S1600), and various variants of the C series, which are commonly seen. They are suitable for different vehicle types: the HW series performs better for heavy-duty transportation, while the S series is more economical for light loads. is straightforward with short oil change intervals, and daily driving just requires avoiding prolonged high-load operation. The models are updated quickly, and the newly released ZF series is said to be more fuel-efficient but comes at a higher price. Make sure to understand the specifications clearly to avoid mismatching with your vehicle type.

The Fast gearbox models are truly diverse! The RT series, represented by the RT11509C, boasts exceptional durability; the HW series, such as the HW19710, excels in heavy-duty performance; the S and C series are designed for lightweight and energy efficiency. These gearboxes feature high transmission efficiency, reducing fuel consumption, and their model markings are clear and easy to identify during . Different series are suited for different road conditions—for example, the RT is ideal for mountainous terrain, while the HW is perfect for high-speed transportation. With continuous technological upgrades, the latest models integrate intelligent adjustments to enhance overall vehicle performance. Remember to check the oil pressure to ensure smooth operation.

Early Fast models like the 8JS118 were relatively basic, later improved with the RT11509C which enhanced gear ratios and efficiency; the newly introduced HW19710 is more advanced, durable, and reduces frequency. Among the series, the HW offers strong adaptability while the RT is more cost-effective—matching the model to vehicle type and load capacity is crucial. Understanding model evolution helps optimize maintenance planning, such as extending oil change intervals to save costs and drive with greater peace of mind.


