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Suspension and Components› Shocks, Struts, Coil-Overs and Components

Ksport

55mm Damper System

$2,310.00 $1,963.50 Save $346.50

SKU: CBM015-AR

Special Order
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

This system features an extended stroke, heavy-duty internals, and simultaneous compression and rebound adjustment. Large diameter pistons within the 55mm shock bodies enhance oil capacity for better cooling efficiency, and carefully selected spring rates and damping settings help stabilize the vehicle and absorb road imperfections.
Show original supplier description
This advanced system offers an extended stroke, robust internals, and a unique design that allows for simultaneous adjustment of both compression and rebound damping. Large 55mm shock bodies house oversized pistons, increasing oil capacity to improve cooling during intense use. The kit includes carefully selected spring rates and damping settings tailored to each application, providing enhanced vehicle stability and superior absorption of uneven road surfaces. Constructed with aerospace-quality aluminum and featuring heavy-duty steel lower mounts, these coilovers are built for durability. The monotube, high-pressure design with inverted steel shock absorbers ensures responsive performance. Front top mounts are pillowball type with camber adjustment, while the rear top mounts are also pillowball type but without camber adjustment. The kit also features adjustable lower mounts and front camber adjustment capabilities. This coilover kit is specifically designed for the 1982-1992 BMW 3 Series (E30) RWD models, including the 318i, 320i, 325e, and 325i, provided they have the 45mm OE front strut. Spring rates are set at 9.8 kg/mm for the front and 7.2 kg/mm for the rear. Please verify fitment details, including the 45mm OE front strut requirement, before purchase.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandKsport
Part NumberCBM015-AR
CategorySuspension and Components
5,000+ Trusted brands
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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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