«Since 2003 I have used the RD906 and the Tractive differential. After six seasons and 11.000 race km’s I have replaced two gears and lots of oil, that’s all!. Not even one dogring! Each season we do about 2000 km’s, about 300 km’s per race. The car is an E46 with a 3.2L S54 450 HP engine. Needless to say, I am very happy with this investment.»