Name: UMI 250lbs Performance Relocation Bolt In Rear Coilover Kit Control Arm GM A-Body 1964-1972
Brand: UMI Performance
SKU: 155988274
Price: 969.99 USD

UMI’s bolt-in rear coilover kit allows full ride height, spring rate and damping adjustability while trailing arm adjustment enables fine tuning of instant center. The upper mount reinforcement is a direct bolt-in and holds a true 2-1/2” racing coilover with T-Bar. The FEA designed, and race proven, lower bracket bolts in using the standard trailing arm mounting hole as well as an additional reinforcement hole normally used by the standard rear shock. The 2-hole trailing arm adjustment enables fine tuning of instant center location for drag launch or auto-x/road race rear steer tuning. The Viking shock is 19-way adjustable in both compression and rebound and ensures the perfect setting for every application. The 2-1/2” coilover springs are available in 12” 175lb for drag use, 12” 225lb for street use and 12” 250lb for auto-x/road race. 100% designed, manufactured and raced out of Philipsburg, PA-USA and always US materials.

This kit is for lowering your car 1-3″ below factory. Contact support@umiperformance.com if planning stock or raised ride height. No refunds if you choose the base kit with lowered ride height then want your car to be tall”

Umi 4057 Is 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.

Installation and Performance: Rear coilover kit is designed for 1” to 3” lowering. When used for drag racing we recommend insurance welding the brackets to the rear end. Vehicles running 10.50 or faster or running slicks require welding. Bolted brackets are suitable for street performance, auto-x and road race.

Spanner Wrench & Thrust Bearing Kit: Spanner wrench tool is used to adjust vehicle height while shock stays mounted. This wrench is needed to make height adjustments. The thrust bearing kit is designed to be placed between the spring and the spring seat attached to the shock. This makes for easier adjustments since the spring seat is rotating on a bearing. This kit is recommended for easier adjustments but is not needed to complete the installation. We do not recommend adjusting height on the car without a thrust bearing kit.

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.

Features:

Brackets manufactured entirely from 3/16” Made In USA mild steel.
Laser cut for consistency and a precise fit.
Powder coated black for a long lasting finish.
Viking Warrior double adjustable shocks offer 19 compression and 19 rebound adjustments.
Viking Crusader valving available for Pro-Tour and Drag specific applications.
3 spring rate options depending upon application.
Built in control arm relocation allows instant center tuning.
100% Bolt in design.
Optional shock tower reinforcement brace available. (P/N 4058-4059)
Designed, tested, manufactured and raced in Philipsburg, PA-USA
Finish: Clear Anodized, Powder Coat
Direct Bolt-On: Yes
Spring Rating: 175lb, 225lb, 250lb

Proposition 65

$/!\ warning$ WARNING: Cancer and Reproductive Harm

https://www.P65Warnings.ca.gov

Make Vehicle	Model	Year
1970-1972 Buick GS	GS	1970-1972
1968-1969 Buick GS 350	GS 350	1968-1969
1968-1969 Buick GS 400	GS 400	1968-1969
1970-1972 Buick GS 455	GS 455	1970-1972
1964-1972 Buick Skylark	Skylark	1964-1972
1964-1969 Buick Special	Special	1964-1969
1964-1972 Buick Sportwagon	Sportwagon	1964-1972
1964-1972 Chevrolet Chevelle	Chevelle	1964-1972
1964-1972 Chevrolet El Camino	El Camino	1964-1972
1964-1967 Chevrolet Malibu	Malibu	1964-1967
1970-1972 Chevrolet Monte Carlo	Monte Carlo	1970-1972
1964-1970 Pontiac Tempest	Tempest	1964-1970

Who is UMI Performance?

UMI Performance is an aftermarket company that specializes in building high-quality suspension parts. But before they were known as a suspension manufacturer, they manufactured precision parts for major brands such as Corning Asahi, Sony, and Bell+Howell. They may have shifted industries, but their dedication to creating quality products has remained the same.

Quality Products Made In The USA

All of their products are made in-house, which allows them to control every aspect of their products. 100% made in the USA, they can maintain their high standards and create suspension parts that can tackle any street, whether it be the fast corners of a race track or the bumpy road to your grocery store.

Parts Bred From The Racetrack

UMI Performance actively participates in various racing disciplines since most of their product engineers and sales team are racers. Because of this, they can test their products through real-life racing scenarios, which helps them gather data that can help improve their products.

Easy To Install Parts

Each product is designed to replace factory-installed parts without any significant modification. It is carefully measured to ensure that it would fit perfectly into the vehicle and comes with a step-by-step instructional manual, giving their customers a hassle-free installation experience.

Purchase UMI Performance At Vivid Racing

If you are in the market for high-quality suspension parts for your vehicle, then look no further, as UMI is the brand for you. To know more about UMI, visit Vivid Racing and check out their list of products that fit your specific need.

UMI Performance warrants all UMI Performance products for a period of two (2) years from the original date of purchase.

This warranty is valid against defects in materials and workmanship for the two (2) year warranty period. It is not valid against defect resulting from, but not limited to:

This warranty is valid for the original purchaser of the UMI Product. Warranty is not transferable or valid for second ownership.

This warranty shall be considered void if the warranted product is in any way altered, adjusted, tampered with or defaced.

The two (2) year warranty does not apply to normal wear and tear (the gradual deterioration of an asset which results naturally from use and/or age, i.e. bearings, bushings, etc.).

Non UMI manufactured parts are not covered or valid under this UMI Performance warranty.

UMI Performance cannot guarantee compatibility or performance of its products with other components used in conjunction with UMI Performance products.

UMI Performance cannot assume responsibility for any damages to UMI Products nor for claims for personal injury or property damage resulting from the use of UMI Performance's products or the improper operation thereof or consequential damages arising from the products or use of the products

.UMI Performance two (2) year warranty excludes incidental charges incurred by the end user in the event of breakage (towing, labor, installation, etc.). By their very nature, competition suspension parts are continuously expected to exceed to their limits (either by race or road use). UMI suspension components are designed to withstand intense race conditions, although it is impossible to control the quality of installation or the varying conditions in which they are used.

This warranty supersedes all other warranties and may only be modified by statement in writing, signed by UMI Performance owners/principals.

All Warranties implied by law, including the warranties of merchantability and fitness for a particular purpose, are hereby limited to the warranty period herein and shall expire at the end of such period.