Swift Springs Standard Coilover Spring (Barrel Type) - ID: 2.5" / Length: 10" Progressive Model Every kit is extensively tested

Every kit is extensively tested on the V36 chassis and refined until it balances ride quality with performance — the reason Q40 coilovers from BC Racing are the best-selling adjustable kits in their segment worldwide

2001 BMW X5 w/ Factory Air Suspension (E53)

2022 Lamborghini Huracan (724)

Part Number CBM251-ABA Damping Adjustment Non-Adjustable Height Adjustable Yes Air Tank 3 gallon tank Compressor VIAIR 380c compressor Control Manual paddle valve control Corners Controlled Fixed damping Top Mount (Front) Pillowball Mount Top Mount (Rear) Reuses OEM Top Mount Notes Ksport Electronic Damping Cancellation Kit EDCBM251 available for this application Vehicle Fitment

Swift Springs Standard Coilover Spring (Barrel Type) - ID: 2.5" / Length: 10" Progressive Model Every kit is extensively testedSwift Springs Standard Coilover Springs (Barrel Type Progressive) in 2. 5" ID and 10" length feature a dual rate design that provides a softer initial rate for compliance over bumps, transitioning to a stiffer rate under load for cornering stability. These 2. 5" ID Swift progressive coilover springs are manufactured in Japan from proprietary H5S. TW high tensile alloy steel, combining the barrel design's anti deflection properties with variable rate