Sale

Tools› Engine-Related

Maximum

Motorsports Steel K-Member for Engine Swapping

$1,296.97 $837.97 Save $459.00

SKU: MMKM-2.1

Out of Stock
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Advanced — 4+ hours

Overview

The Maximum Motorsports MMKM-2.1 is a steel K-member designed for engine swapping in 1979-1995 Mustang chassis. It features an updated design for better fitment with 2015+ Coyote engines.
Show original supplier description
The Maximum Motorsports MMKM-2.1 is a steel K-member that facilitates engine swaps in 1979-1995 Mustang models. This hybrid K-member bolts directly into the chassis and offers revised engine mounting pads and steering rack location to accommodate various engines, including the 5.0L Coyote (2011-2015+), 4.6L/5.4L modular, 3.8L V6, and LSX. It features an updated design for improved fitment with 2015+ Coyote engines, with all units shipped after 8/1/18 incorporating this revision. Weighing in at 39 lb, it is 22% lighter than the OEM K-member, while being exceptionally strong, stiff, and durable. The design prioritizes maximizing stiffness to maintain stable suspension geometry during cornering, leading to more precise handling and increased braking stability. Construction involves advanced cross-bracing and triangulation with thicker-gauge metal and larger tube sizes for superior strength and longevity, suitable for drag racing, road racing, and daily driving. Installation of the MMKM-2.1 requires several additional components, including tubular front control arms, a front coil-over conversion with high-performance struts, MM Aluminum Steering Rack Bushings, caster camber plates, and a bolt-through-style bumpsteer kit. Specific engine configurations may also require extra parts, such as an oil filter relocation kit for 4.6L modular engines with an OEM oil cooler, or specific 1996-2004 4.6L V8 engine mounts for Coyote engines and 1996-2004 V6 engine mounts for the 3.8L V6. Short swaybar endlinks and front swaybar relocation brackets/universal bushings are also required with non-offset and forward-offset front control arms. Notes regarding fitment and installation include that stock front control arms will not fit due to the size of the pivot bushings. For 1979-1993 Mustangs, three different front control arms are available, offering options to maintain stock tire location or shift it forward by 0.75" or 1.5". Similarly, for 1994-1995 Mustangs, two control arm options shift the tires forward by 0.75" or 1.5". LSX engines will require fabrication of engine mounts or modification of Ford modular mounts. The MMKM-1 is recommended for installing 5.0L, 302, 351W, or 2.3L engines in a 1979-1995 Mustang.

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

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandMaximum
Part NumberMMKM-2.1
CategoryTools

About MOTORMIA

5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold

Buy with Confidence

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.

View Full Return Policy

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.

View Full Shipping Policy