UMI Performance · New
UMI Performance 82-92 GM F-Body K-member LSX Engines Coil Springs - Red
MPN 2403-R · Store SKU umi2403-R
Supplier stock checked 11/7/2026, 11:10:24 AM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
We all know weight equals horsepower. UMI’s direct bolt-in replacement K-member instantly removes 20 lbs of front end weight from your ride and helps your existing horsepower work for you. Strong dual tube construction and a host of high-strength features ensure the P/N 2403 will survive street use, drag strip blasts and autocross action. The K-member is fabricated from CNC machined 3/16” mild steel held together by a strong dual tube lower section. Included fabricated motor mounts are used to bolt any LSX engine to the precision machined mounting pads while both factory and aftermarket suspension is located by strong boxed mounting points. Lightening holes are CNC machined into the mounting plates and the tubular construction provides added clearance for aftermarket exhaust. The modular design permits stock spring and strut use or simply remove the spring pockets and convert to coil-overs. Street and track testing on our ’89 IROC test car has shown this K-member to be strong, reliable and a great upgrade for your high performance ride. Available in tough powder coated red or black finish. Manufactured with pride in Philipsburg, PA - USA Note: Factory low mounted LS A/C needs relocated when running a UMI tubular k-member, we recommend an A/C relocation kit from www.kwikperf.com. K-member was designed around the LS1 oil pan and also works with the Holley 302 oil pan. Other oil pans may not clear. P/N 2403 k-member can also be used with a factory SBC engine by not installing the included LSX motor mount stands. Direct bolt-in design can be used with factory, UMI or other aftermarket a-arms as well as factory or aftermarket springs Strong 3/16” thick mild steel engine and suspension mounts held together with 1-1/2” dia DOM tubing Modular design allows use of coil-overs and/or LS mounts for minimal cost 2403 - 1982-1992 GM F-Body Tubular K-member for LSX Engines, Factory Springs Allows installation of any LSX engine without modifications CNC machined and jig-built for no hassle installation Manufactured with pride in Philipsburg, PA - USA Double tube construction for superior strength Durable red or black powdercoat 20 lbs lighter than stock Features and benefits: MIG and TIG welded
Manufacturer fitment & guides
Check 2403-R against the manufacturer’s application information below.
A manufacturer application guide is not available for this listing. Request the exact application from JuiceBuilt before payment.
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