Set up in 1999, Deland Car Accessories Co., Ltd. is a professional China gearbox, gearbox parts manufacturer and designer. It has years of OES and OEM gearboxes production experiences and passed ISO9000 and the TUV certification of ISO/TS16949 quality system. Therefore, we can better fulfill customers' specifications and satisfy their changing needs, such as Ford, Opel, Benz, BMW, Nissan, Toyota, Mitsubishi, Mazda, Isuzu, Hyundai, Kia and Truck series.

The VAG Direct Shift Gearbox - sometimes called the S-Tronic in the Audi range - is the world's first production dual clutch semi automatic gearbox. The system was developed for Audi by BorgWarner for use in the companies Audi TT 3.2V6, and was so well received it is now used in much of the Volkswagen Audi Group range. The DSG is often compared to F1 style automated or robotic manual gearboxes, but differs in some very important ways. The DSG box takes the basic idea of pneumatic clutched boxes a step further. The heart of the DSG comes from the fact it has two clutches. The basic idea being that the gearbox can then have two gears engaged at any one time, one driving the car, the other waiting to take over.
The clutch arrangement is setup for odds and evens, where clutch 1 operates the 1-3-5 gears and clutch 2 operates 2-4-6.
DSG works by allowing the software to decide what gear the car will need next, and then pre-selects it. If you are accelerating, it will have the next gear up, and likewise if decelerating, the next gear down.

It's nice to see how compact the latter one is compared to the first, despite the fact that it has seven segments ratio. If time allows, I'll try to post the official picture/s of the DKG a.k.a. DCT for the BMW E90/2/3 M3 as well. With this new powertrain the M5 offers the best power-to-weight ratio in its class. In the tradition of BMW M, the chassis has been engineered to keep up with the power while the exterior treatment is subtle, yet distinctive. First high-revving engine to be featured in a production sedan This is the first application of a V10 engine in a regular production sedan, if it's possible to call any product from BMW M "regular." It once again sets the benchmark in its class. This engine was engineered to rev, with a redline of 8,250. With 25 percent more power than the previous M5's V8, this new engine offers 100 horsepower per liter of displacement, pure race car territory.