How many models does the Fast 12-speed transmission have?

3 Answers
LaOwen
07/29/25 11:44am
Fast 12-speed transmission has 6 models: 160, 160TA, 180, 180TA, 200, and 200TA. Fast, short for Shaanxi Fast Auto Drive Group Company Limited, was restructured from Shaanxi Automobile Gear Factory and 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 castings. The company's leading products include: dual countershaft series transmissions produced with American technology and independently developed multi-series transmissions; series power take-offs and transfer cases matching the above products; OEM gears and other export components, as well as various domestic and imported automotive gear forgings and auto parts.
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StAnastasia
08/13/25 8:24pm
As a veteran truck driver with over a decade of experience behind the wheel of heavy-duty trucks, the Fast Gear 12-speed transmission is quite common in the trucking community. I've driven many models and remember there are six main types: the 12JSD160T, 180T, 200T, along with the high-strength versions like the 220T and 240T, plus the overdrive models 180TA and 200TA. For regular hauling on light-load routes, I usually use the 160T—it's more convenient. When it comes to overweight loads, the 200T is my go-to for its strong and stable power. The main difference between these models lies in their torque capacities: the 160T is suitable for loads under 15 tons, while the 240T can handle over 30 tons. Maintenance-wise, don’t overlook regular gear oil changes and clutch inspections, or you might experience gear-shifting issues. If you hear any unusual noises while driving, get it checked immediately—small problems can turn into major repairs. The driving feel varies noticeably between models: the 160T is more agile, while the 240T is tougher to handle but more durable.
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DeColton
10/08/25 6:14am
As a car enthusiast, I'm quite interested in the Fast 12-speed transmission. It has at least five mainstream models, such as the 160T, 180T, and 200T series, plus the overdrive versions 180TA and 200TA, all widely used in heavy-duty trucks. From discussions with fellow drivers, I've learned that each model matches different engine power outputs: the 160T is more entry-level with lower torque, while the 200T and above are like performance versions suitable for long-haul heavy loads. When modifying, it's crucial to choose the right model to avoid gear-shifting issues. The overdrive versions claim to save 10%-15% fuel, but drivers need time to adapt to their operation. Additionally, I've heard that some newer models have improved noise reduction designs for smoother driving. For maintenance, using high-quality lubricants is recommended to extend transmission life. Overall, while there are many models, choosing the right one can significantly enhance truck performance.
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