ECOTRIC Coil-Over Lower Mount Kit for 3" Axle Tubes — C2047 Adjustable Weld-On Brackets, 6" Ride-Height Range

ECOTRIC's C2047 adjustable coil-over lower mount kit is a weld-on rear bracket system that provides up to 6 inches of height adjustment for 3" axle tubes and fits most popular coil-over shocks.

This kit supplies a set of CNC laser-cut, heavy-gauge brackets engineered to convert a 3" axle tube into a rear lower coil-over mounting point. Sold as a kit that mounts two shocks, it includes weld-on housings, L-brackets, and a bolt kit so you can position and secure coil-overs with robust, repeatable geometry. The components arrive in natural finish ready for welding and painting.

How much ride-height adjustment will I get with this kit?

You can achieve a minimum of 6 inches of vertical adjustment by moving the coil-over shock mounting points along the bracket slots. Adjustment is achieved mechanically by relocating the L-brackets and re-bolting—no specialty tools beyond standard shop equipment are required.

• Minimum 6" of height range built into the bracket design
• Multiple bolt positions for incremental tuning
• Works with most aftermarket coil-over shocks
• Adjustment requires welding the housings to axle tube first

What exactly comes in the package and what will I need to install it?

The kit contains two weld-on housing brackets sized for 3" axle tubes, four 3/16" thick L-brackets that clamp the shocks, and a bolt kit for fasteners. Installation requires welding the housings to your axle tube, basic hand tools for final assembly, and a torque wrench to set fastener tightness.

• 2x weld-on housings for 3" axle tube
• 4x 3/16" thick L-brackets for shock mounting
• Included bolt kit for mounting the shocks and brackets
• Required: MIG/TIG welding, grinder for prep, basic hand tools

Will these mounts fit my vehicle and shock set-up?

These lower mounts are designed around a 3" axle tube and common coil-over shock bodies, so they fit many traditional rear axle applications and custom builds. Because measurements and shock eyelet sizes vary, check your shock eye diameter and clearances before welding to confirm compatibility.

• Made for 3" diameter axle tubes
• Compatible with most coil-over shocks with standard lower eyelets
• Welding required—measure shock travel and clearance pre-install
• Sold as a pair; mounts two shocks (driver and passenger sides)

Who is this for: Fabricators, hot-rodders, and DIY builders who are modifying rear axles to accept coil-over suspensions will find this ECOTRIC kit useful. It’s aimed at people comfortable with welding and alignment work who want a heavy-duty, adjustable lower mounting solution for custom ride-height tuning without relying on expensive adapter parts.