UMI Performance 64-72 GM A-Body Rear Coilover Kit Control Arm Relocation Bolt In

$497.75 CAD

UMI Performance SKU: umi4057

Earn [points_amount] when you buy this item.

4057

UMI’s bolt-in rear coilover kit allows full ride height, spring rate and damping adjustments, while trailing arm adjustment enables fine tuning of instant center. The reinforced upper mount is a direct bolt-in (requiring one additional hole to be drilled) and holds a true 2-1/2” racing coilover with double-shear mount. The FEA designed reinforced lower brackets bolt directly over the stock rear lower control arm mounts, utilizing the existing lower shock hole(s) (may requiring drilling of additional hole depending on factory configuration). The 2-hole trailing arm height adjustment enables fine tuning of instant center location for drag launch or auto-x/road race rear steer tuning. 100% designed, manufactured and raced out of Philipsburg, PA-USA and always US materials.

Note: Rear shocks may not clear all exhaust tail pipes.

feature-icon-raw-materials

North American Raw Materials


feature-icon-plating

3/16`` Steel Plating


feature-icon-laser

Laser Cut Precision


feature-icon-powder-coat

Durable Powder-Coat Finish


feature-icon-made-in-the-usa

USA Made


RECOMMENDED UPGRADES

Optional Shock Tower Brace P/N 4058-4059- P/N 4058 & 4059 is designed to tie the left and right rear shock towers together for additional chassis reinforcement. UMI’s P/N 4058-4059 has been designed to clear most exhaust systems however we cannot guarantee fitment with all exhaust systems. Rear shock tower brace kits car only, does not kit wagon or El Camino.

FITMENT NOTES


STOCK AXLE ONLY: THIS KIT IS A DIRECT BOLT-ON ONLY WHEN USED WITH A GM AXLE HOUSING AND STOCK GM BRACKETS. AFTERMARKET HOUSINGS VARY WIDELY IN DESIGN AND LAYOUT, WHICH MEANS THE 4057 BRACKET WILL NOT BOLT ON.

INSTALL NOTES


WELDING REQUIRED FOR DRAG USE: VEHICLES RUNNING 10.50 OR FASTER OR RUNNING SLICKS REQUIRE WELDING. BOLTED BRACKETS ARE SUITABLE FOR STREET PERFORMANCE, AUTO-X AND ROAD RACE.

This website does not show live stock.

If the product is in stock we ship same/next day.

If a product needs to be ordered in the typical wait time is 1-2 weeks.

Shipping times vary depending if the part is in stock at our warehouse and which shipping option is chosen at checkout.

Please contact us for an accurate ETA and availability.