Dinan 21-26 BMW M3 Competition St-1 Coil-Over Suspension

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.

• Up to 1" of lowering in front and 2-1/4" of lowering in back are possible depending on tire clearance but with diminished ride quality
• Components are machined from 6061-T6 aluminum and black anodized for a sporty appearance as well as corrosion protection
• Dinan recommends a 3/4" (M4) to 7/8" (M3) drop in front and a 3/4" drop in the rear to maintain a civilized ride
• Spring rates are 15% stiffer in front and 10% softer in the rear for increased predictability and compliancy
• Included suspension packers allow adjustment of bump-stop clearance to fine-tune handling and comfort
• Stock upper spring mounts are utilized as well as spring isolators for quiet operation
• Threaded collars allow easy and precise front & rear vehicle height adjustments
• Dinan-spec progressive bump stops improve ride quality at lowered ride heights
• Up to 1/2" of lift in front and 1-1/4" in back over stock is also possible
• Substantial reduction in body roll

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