Every DR.D exhaust is built developed and tested by Doug Dubach. DR.D pours more time into track testing with more experience than any other company. A former Factory Supercross rider and career test rider Dubach is widely considered ‘the greatest test rider in the sport’. DR.D exhaust performance is unequalled; while others simply search for peak horsepower on a dyno Dubach spends hours riding stock bikes to understand where each needs improved power character and/or more power! The DR.D R&D Test Center in Warner Springs California is Dubach’s labor of love; it houses our engineering team advanced CAD/CAM technologies Data Acquisition Dyno Jet 500 and most importantly three (3) unique test tracks. DR.D exhausts are not mass produced each exhaust is unique and each has been developed on the track to best improve the bikes power character. You won’t find ‘universal’ components such as heavy springs and gaskets in our construction because cutting corners on the track or in production is never beneficial.
