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This listing is for Dinan Adjustable Coil Over Suspension System Fits 21-27 BMW M3/M4 G80 G82 G83

Part Number D190-8210

Founded in 1979, Dinan is North America's premier BMW tuner and one of the most respected names in European performance. Every Dinan product is developed and validated in-house to a "performance without sacrifice" standard — meaningful power and handling gains that don't cost you drivability, refinement or reliability. The catalogue covers ECU and TCU tuning, suspension and springs, big brake kits, exhaust systems, cold air intakes, turbocharger upgrades and wheels, originally for BMW and now extending to MINI, Mercedes-Benz, Toyota and Tesla. Dinan parts are sold through a worldwide network of authorised performance centres, including BMW dealerships.

Dinan's design retains the superb factory electronic shocks but swaps the springs to a more aggressive, performance enhancing formula and implements threaded collars that allow the user to change the ride height themselves. While shorter, stiffer springs are commonplace in aftermarket suspensions and are a key element in reduction of body roll it is not a one size fits all approach. In the case of the G8x M3/M4 where the vehicle has a penchant for oversteer, stiffening the rear springs would exacerbate the problem of the rear losing traction before the front when the platform is pushed to the limit. Dinan instead has opted to soften the rear spring rate as well as switch from the factory progressive rate rear to a dual rate spring setup. The combination increases predictability and compliancy, and in turn, provides better rear grip/road holding for a vehicle that needs both. The result is a sleek lowered stance that provides improved handling to go along with its stunning visual appearance. The springs combined with progressive bump stops and other components increase travel that allow the car to be lowered up to 1-1/8" in the front and 2-1/4" inches the rear. However, to retain the ride quality synonymous with Dinan suspension kits the recommended drop of 3/4" (M4) or 7/8" (M3) in front and 3/4" in the rear is advised. For suspension connoisseurs, or those that are just simply very particular, suspension packers are included to fine-tune handling and comfort by changing the clearance of the progressive bump-stops --- something no respectable race car is without.

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