We are an authorized Dinan dealer and have been adding performance to BMW's for years now with their rock solid engineering.  Performance without sacrifice is their motto and that holds true for every product they offer.  Dinan specializes in BMW engine, chassis, and driveline tuning.  Their attention to detail and the perfect fitment for your specific model makes it one of the best additions on the market.  The range of products vary depending on your model.  Please inquire for further questions and estimates.  Be sure to check out their website at www.dinancars.com to see what's available!