$595.00 USD
$595.00 USD


















Unlike conventional lowering springs, the MMR Height Adjustable Sport Spring kit for the current G87 M2, G80 M3, and G82 M4 gives you a fully customizable ride height adjustment. So however you want your car to sit, this Height Adjustable Spring (HAS) kit allows you to infinitely fine tune heights front and rear until you reach your ideal stance.
By retaining the Adaptive M dampers, this solution costs much less than upgrading to coilover suspension does - yet with the reassurance of keeping your high quality, sophisticated factory dampers in place. Best of both worlds, in other words.
The method of height adjustment is just the same as on a coilover suspension setup. Four adjustable perches fit underneath the Sport Springs. With a simple turn up or down on the threaded platform to change ride height, you can tailor it until reaches your perfect height and rake.
This generous sweep of adjustment provides a lowering range of 20-45mm on the front and 10-35mm at the rear (versus the factory ride height).
The Sport Springs themselves, finished in beautiful MMR Grey, are carefully developed progressive rate springs, with rates carefully chosen to match with the damper characteristics of the factory M3/M4 G8x suspension.
It’s by specifying progressive rate Sport Springs that allows us to deliver the perfect blend of improved dynamics in hard driving, yet without sacrificing ride quality in normal us in the middle of the springs’ travel. Push-on through the corners and the G8x chassis really comes to life, making it feel lighter, more direct and with significantly sharper turn-in.
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$595.00 USD
$595.00 USD
This product can expose you to chemicals such as lead and lead compounds, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
For a complete list of chemicals known to cause harm, visit https://www.p65warnings.ca.gov/chemicals.
Under the federal Clean Air Act (42 U.S.C. §7522(a)(3)), it is illegal to manufacture, sell, install, or use any part that defeats or alters a motor vehicle’s emission control system for use on public roads. Unless a product has received an Executive Order (EO) from the California Air Resources Board (CARB), it is not legal for use or installation on any pollution-controlled vehicle driven on public highways.
Some states have CARB-equivalent or independent emissions laws. Customers are responsible for verifying local regulations before purchasing or installing emissions-related products.
All performance, racing, or competition parts sold by this company are intended solely for off-road, closed-course, or competition use on vehicles that are never registered or used on public highways.
Kies Motorsports, LLC sells and markets these products for lawful use only. We do not condone or authorize the use of emission-control defeat devices or any modification that violates the Clean Air Act or state regulations.