1968-1974 GM X-BodyA-Arms|1967-1969 GM F-BodyA-Arms › 275253-1 – GM Classic F/X-Body A-Arms, Upper & Lower Kit, Delrin Bushings, Tall Upper Ball Joints

275253-1 – GM Classic F/X-Body A-Arms, Upper & Lower Kit, Delrin Bushings, Tall Upper Ball Joints

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Front Suspension Kit

275253-1 – GM Classic F/X-Body A-Arms, Upper & Lower Kit, Delrin Bushings, Tall Upper Ball Joints

Transform your classic's handling with a complete tubular A-arm kit. Features zero-deflection Delrin bushings and 1/2-inch taller upper ball joints for track-ready geometry.

Complete A-Arm Kit Delrin Bushings 1/2-Inch Taller Ball Joints Caster + Camber Correction 100% USA-Made
Improved handling geometry with 1/2-inch taller upper ball joints for a flatter contact patch
High-strength construction from premium .120 wall DOM steel tubing
Friction-free Delrin bushings for zero-deflection track and autocross performance
Ready to install fully assembled with premium ball joints and cross shafts

Description

Elevate your classic muscle car's handling with the UMI 275253-1 Tubular Upper and Lower A-Arm Kit. This complete front suspension package is the ultimate upgrade for superior strength, precision, and track-level response. Built from high-strength DOM steel tubing, both the upper and lower arms feature UMI-built zero-deflection Delrin bushings for bind-free articulation during hard cornering. The upper arms include 1/2-inch taller ball joints to radically improve the factory camber curve, while relocated ball joint pads and optimized lower geometry work together to naturally increase positive caster and correct camber on lowered vehicles.

Engineered as a direct bolt-in replacement for 1967–1969 Camaro and Firebird (F-Body) alongside 1968–1974 Nova (X-Body) platforms, this complete kit works flawlessly with factory springs, lowering springs, or coilover conversions. Each arm ships fully assembled with premium ball joints, polyurethane bump stops, and zinc-plated 4140 chromoly cross shafts. Proudly designed, track-tested, and manufactured 100% in the USA at UMI’s Pennsylvania facility, it provides everything needed to modernize your vintage chassis.

Product Features

Complete tubular upper and lower A-arm package
Built from high-strength .120 wall DOM steel tubing
Pre-installed 1/2" taller upper ball joints
Zero-deflection Delrin bushings installed top and bottom
Corrects camber and increases positive caster
4140 chromoly upper cross shafts, CNC machined
Repositionable polyurethane lower bump stops
100% Made in Philipsburg, PA
Fitment Note: Does not fit vehicles with drum brakes

Detailed Features

Complete suspension package: Includes both upper and lower tubular control arms to completely overhaul your front geometry in one convenient kit.
1/2-inch taller upper ball joints: Radically improves the factory camber curve, keeping the front tire contact patch flat on the pavement during aggressive cornering.
Zero-deflection Delrin bushings: CNC-machined in-house and pre-installed for bind-free articulation, offering the ultimate upgrade for track and autocross performance.
Optimized handling geometry: Combines a relocated upper ball joint pad with modern lower arm design to correct camber and increase caster naturally.
High-strength DOM tubing: Built from .120 wall steel tubing that is CNC-machined and rotary draw bent for unmatched durability and improved header clearance.
4140 chromoly cross shafts: CNC-machined for incredible strength and zinc-plated for maximum corrosion resistance, featuring reversible mounting for custom camber baselines.
Universal first-gen fitment: Lower arms feature dual fore/aft welded steering stop pads and repositionable bump stops to fit both factory frame styles perfectly.
Rod end sway bar links: Includes premium lower end links and hardware, ensuring your sway bar articulates smoothly under heavy cornering loads.

1.5" DOM tubing construction

Built from .120 wall high-strength steel tubing that is CNC-machined and rotary draw bent for unmatched durability.

Greaseable bushings:

Polyurethane (PN 2751) or Delrin (PN 2752) pre-installed and fluted for smooth, quiet operation, providing improved steering response over deflected factory rubber.

Optimized handling geometry

Corrects camber and increases caster for stock to 2-inch lowered ride heights with a factory spindle.

Repositionable bump stops

Polyurethane bump stops can be moved from front to rear to match your specific subframe configuration perfectly.

Rod end sway bar links

Includes premium end links and hardware, ensuring your sway bar articulates smoothly without binding.

Product Outcomes

Maximizes front tire grip by correcting the aggressive camber curve issues inherent in factory muscle cars.
Vastly improves steering response and straight-line stability by optimizing positive caster geometry.
Eliminates control arm deflection with rigid Delrin bushings for consistent, predictable cornering.
Accommodates aggressive lowering up to 2 inches without sacrificing alignment specifications.
Provides additional engine bay clearance for easier installation of aftermarket exhaust headers.

Installation Summary

Overview & Difficulty: Moderate DIY install requiring basic hand tools, a floor jack, jack stands, and a ball joint separator; approximately 5–8 hours for the complete set. Involves removing the factory coil springs, shocks, and spindles. Reassemble with the new UMI arms, noting upper cross-shaft orientation dictates baseline camber.

What’s Included:
  • Tubular lower A-arm with standard ball joint and Delrin bushings (Driver) ×1
  • Tubular lower A-arm with standard ball joint and Delrin bushings (Passenger) ×1
  • Tubular upper A-arm with 1/2" taller ball joint and Delrin bushings (Driver) ×1
  • Tubular upper A-arm with 1/2" taller ball joint and Delrin bushings (Passenger) ×1
  • Repositionable polyurethane bump stops ×4
  • Rod end style sway bar end links ×2

Relocated ball joint pad:

Increases positive caster natively without requiring a massive stack of alignment shims, vastly improving straight-line stability and steering feel.

1.25-inch DOM tubing

Formed on a programmable rotary draw bender for precise, repeatable tolerances, high strength, and much better header clearance than factory stamped arms.

Fluted Delrin bushings

CNC-machined in-house by UMI, these greaseable bushings provide zero deflection during hard cornering for crisp, predictable handling over rubber.

4140 chromoly cross shafts

CNC-machined for incredible strength and zinc-plated for maximum corrosion resistance, ensuring years of trouble-free performance.

Reversible camber baselines

Cross shafts can be installed with the shallow side to the frame for positive camber or the deeper side for aggressive negative camber.

Premium ball joints

Ships fully assembled with standard-height premium ball joints (PN 2753) or 1/2" taller ball joints (PN 2753-1) and polyurethane bump stops so you can bolt them right up out of the box.

Is This Product Right for You?

The UMI 275253-1 kit is the ultimate front handling foundation for classic GM F-Body and X-Body cars. By upgrading weak stamped steel arms to a complete DOM tubing package with 1/2-inch taller ball joints and zero-deflection Delrin bushings, drivers achieve incredibly sharp turn-in, bind-free suspension travel, and precise alignment control even at lowered ride heights.

Best For
Pro-Touring and autocross builders demanding maximum suspension response and geometry correction.
Drivers running coilovers, drop springs, or aftermarket drop spindles on the track.
Enthusiasts looking to completely eliminate front-end deflection during hard cornering.
Not Ideal For
×
Street-only cruisers prioritizing vibration isolation (see kit 275153 with poly lower bushings).
×
Owners maintaining a 100% factory original, numbers-matching restoration.
×
Vehicles equipped with factory front drum brakes (will not fit).

Product FAQ

What vehicles does the UMI 275253-1 A-arm kit fit?
This complete kit fits the 1967–1969 Camaro and Firebird, as well as the 1968–1974 Chevy Nova. Note that it will not fit vehicles equipped with drum brakes.
What is the benefit of the 1/2-inch taller upper ball joints?
The included 1/2-inch taller ball joints dramatically improve the suspension's camber curve, ensuring the front tire maintains a flat contact patch on the pavement during hard cornering.
How does this complete kit improve steering geometry?
Together, the arms feature a relocated upper ball joint pad and optimized lower dimensions that naturally increase positive caster, improving straight-line stability and steering returnability.
Why does this kit use Delrin bushings instead of polyurethane?
The UMI-built CNC-machined Delrin bushings provide zero deflection for bind-free articulation, offering the crisp, predictable handling required for serious track and autocross performance.
Will these control arms work with lowered cars?
Yes. They are expressly designed to correct the suspension geometry for cars at stock height up to a 2-inch drop, ensuring optimal alignment through full suspension travel.
Can I adjust my baseline camber with these arms?
Yes. The 4140 chromoly upper cross shafts can be oriented with the shallow side facing the frame for more positive camber, or the deeper side for more negative camber.
My first-gen has a specific frame style. Will the lower arms fit?
Yes. UMI built the lower arms to be universally compatible with early frames by including steering stop pads welded fore and aft and a repositionable polyurethane bump stop.
Does the kit include installation hardware?
The kit includes sway bar end links and bump stops, but frame mounting hardware is not included. You can re-use your factory hardware or purchase UMI kits 4001, 4002, or 4003 separately.
Where is the UMI 275253-1 kit manufactured?
These tubular control arms are designed, track-tested, and manufactured 100% in the USA at UMI Performance’s facility in Philipsburg, Pennsylvania.

KIT ITEMS

This item is a kit containing the following items:
Fitment
Platform
Manufacturer
UOMPair
HardwareNot Included
StockShips in 2 weeks
ColorBlack, Red
AdjustableNo
Bushing TypePolyurethane
Direct Bolt-OnYes
FinishPowder Coat
MaterialMild Steel
Why Choose

UMI Performance

21 Years In The Industry

Shipping Guidelines

Flat Rate Shipping ($12.95) is only offered on Retail orders over $149 shipped via Ground in the Continental United States.

All International customers are responsible for any applicable duties and/or taxes incurred on your shipment upon delivery.

Return Information

All returns are subject to the authorization of UMI Performance, Inc. Please email [email protected] for a Returned Merchandise Authorization (RMA) number. Our Sales team will either authorize or deny the request for return at its discretion. Any product returned without an issued RMA number will not be credited. All returns must be made within 30 days of delivery, be in new condition, be in original sealed packaging and include the RMA number on the outside of the packaging. No exceptions. All products and their packaging must be in new and unopened condition. Products that have been altered, installed, or modified are not returnable. All shipping costs for returns are the responsibility of the customer. All returns are subject to a 20% restocking fee as well as the original shipping charges that UMI Performance may have incurred while shipping your order.

Due to the majority of Viking products being drop shipped, we can not offer returns on any Viking products. If you purchase a Viking product be sure it fits your application. If you need technical assistance prior to placing order please contact [email protected]

This '275253-1 - GM Classic F/X-Body A-Arms, Upper & Lower Kit, Delrin Bushings, Tall Upper Ball Joints' fits the following platforms:

Fitment Note: Does not fit vehicles with drum brakes

1967-1969 GM F-Body

  • 1967-1969 Chevrolet Camaro
  • 1967-1969 Pontiac Firebird

1968-1974 GM X-Body

  • 1968-1974 Chevrolet Nova
  • 1968-1974 Buick Apollo
  • 1973-1974 Oldsmobile Omega
  • 1971-1974 Pontiac Ventura

This 275253-1 - GM Classic F/X-Body A-Arms, Upper & Lower Kit, Delrin Bushings, Tall Upper Ball Joints fits the following vehicles:

Chevrolet

Camaro

  • 1967 Chevrolet Camaro
  • 1968 Chevrolet Camaro
  • 1969 Chevrolet Camaro

Nova

  • 1968 Chevrolet Nova
  • 1969 Chevrolet Nova
  • 1970 Chevrolet Nova
  • 1971 Chevrolet Nova
  • 1972 Chevrolet Nova
  • 1973 Chevrolet Nova
  • 1974 Chevrolet Nova

Pontiac

Firebird

  • 1967 Pontiac Firebird
  • 1968 Pontiac Firebird
  • 1969 Pontiac Firebird

Ventura

  • 1971 Pontiac Ventura
  • 1972 Pontiac Ventura
  • 1973 Pontiac Ventura
  • 1974 Pontiac Ventura

Buick

Apollo

  • 1968 Buick Apollo
  • 1969 Buick Apollo
  • 1970 Buick Apollo
  • 1971 Buick Apollo
  • 1972 Buick Apollo
  • 1973 Buick Apollo
  • 1974 Buick Apollo

Oldsmobile

Omega

  • 1973 Oldsmobile Omega
  • 1974 Oldsmobile Omega