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UMI Performance 1970-1981 GM F-Body Front A-arm Kit, Delrin Bushings, Tall Ball Joints
$1469.99
  • Features:
  • 5-7 degrees of total positive caster. 0 to 2-1/2 degrees of negative camber.
  • Upper ball joint moved rearward to add 3-4 degrees caster potential.
  • Upper and lower a-arms built from USA Made DOM steel tubing.
  • UMI built Delrin bushings for crisp steering response.
  • ?? taller upper ball joint to improve camber gain and traction during cornering.
  • Heavy duty spring bucket accepts factory and aftermarket coil springs.
  • Spring bucket is compatible with popular hybrid coils such as Viking and QA1.
  • UMI built Delrin bushings improve steering response and reduce deflection.
  • Made in the USA.
  • Performance a-arm kit is a direct bolt-in for 1970-1981 GM F-Body.
  • CrMo offset cross shaft upper to reduce number of shims required during alignment.

Lower ball joint relocated forward to increase caster 2 degrees which improves steering feel and straight line stability.

Double shear swivel sway bar mounts and hardware work with UMI P/N 4035 and most other factory eyelet style sway bars.

Optional New Hardware Kit: UMI offers the option of new high grade mounting hardware for your classic Camaro or Firebird. 1970-1974 cars use ?? standard hardware on the lower a-arms while 1975-1981 use 14mm metric control arm hardware. UMI suggests checking your vehicles current hardware size before ordering to confirm. UMI a-arms are supplied with both sets of mounting sleeves to except either hardware sizes. Hardware kits are Grade 8 standard and Grade 10.9 metric with Ny-lock nuts.

UMI's 2nd Generation F-Body a-arm kit, P/N 265253-1 is designed to make your classic cruiser feel like modern muscle. Increased positive caster combined with improved camber curve and low friction Delrin bushings make for a well-tuned front end. Increased caster is achieved relocating both the upper and lower ball joints to enhance steering feel and improve high speed stability. As designed, the caster range is 5-7 degrees. The spindle pin location remains unchanged so fender clearance is like stock. The upper a-arms include offset CrMo cross shafts to reduce the amount of shims required when setting camber as well as a tall ball joint to improve camber gain. Upper and lower a-arms are assembled with UMI built Delrin bushings to allow proper suspension movement. A pancake style polyurethane bump stop is included to control suspension droop. The heavy duty lower spring bucket accepts factory and aftermarket coil springs as well as the popular hybrid coilover units. Laser cut UMI reinforcement plates add a great appearance and excellent strength. UMI's double shear sway bar end links are included and work nicely with UMI P/N 4035 sway bar and also most aftermarket stock eyelet type sway bars. Available in UMI red or gloss black powder coat. 100% designed, manufactured and raced with pride in Philipsburg, PA - USA.

Features

  • Material: Steel
  • Color: Red
  • Mounting Hardware Included: No
  • Adjustable: No
  • Bushing Material: Delrin
  • Bushing Color: White
  • Construction: Tubular
  • Finish: Red Powdercoated
  • Mounting Method: Bolt On
  • Pre Greased: No
  • Grease Fitting Included: Yes
  • Bushings Included: Yes
  • Ball Joint Included: Yes
  • Grade Type: Performance
  • California Proposition 65: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Notes:

Proposition 65

WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

UMI Performance Banner

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:
    Misuse and/or abuse, neglect or accident.
    Exceeding the item(s) design limits.
    Improper installation.
    Acts of God, including lightning, floods, earthquakes, fire or high winds.
    Damage in handling, including damage encountered during shipment.
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.
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Things
Sale price None
Wholesale price $1,387.67
Shipping Weight: 48.00
Length: 16
Width: 17
Height: 20
Product Added At Friday 05 June, 2020
Product Modified At Wednesday 28 May, 2025
Imported By ETLOverride
Last Edited By kathi@vividracing.com
View In Admin

Emissions Info
Carb Approved -
Carb Number -
Epa Status N/A
Prop65 Yes
Carb Required -
Vendors
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Vendor Inv Cost Retail Jobber MAP Core Updated
UMI Performance $1,175.99 $1,469.99 ? $1,469.99 ? 2025-05-28 13:00:33


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