# QA1 68-72 GM A-Body Upper Adjustable Trailing Arms All upper tubular and lower boxed trailing arms use polyurethane bushings on both ends, while upper adjustable and lower tubular trailing arms use a spherical ball or rod end assembly on the chassis end to eliminate bushing bind, allowing the suspension to move smoother for better control. This keeps the tires planted firmly on the ground for improved traction and a more predictable, better handling car. For a long-lasting finish, tubular and boxed trailing arms are powder-coated gloss black, while the adjustable arms are zinc plated and anodized. Boxed Trailing Arms are constructed from 0.120'' wall cold rolled steel tubing for maximum strength and flex elimination. These trailing arms have fluted, greasable polyurethane bushings, which are superior to the stock rubber bushings. Tubular Trailing Arms are constructed from 1-1/4'' diameter, 0.120'' wall steel tubing which offers increased strength over other designs, but also have the added advantage of lighter weight. These trailing arms have fluted, greasable polyurethane bushings, which are superior to the stock rubber bushings. Heavy-Duty Adjustable Trailing Arms allow easy rear suspension adjustments for optimum handling and traction. Simply loosen the jam nuts and adjust the pinion angle without removing the arms from the vehicle. They replace soft OE differential bushings with polyurethane differential bushings, and they use a spherical ball or rod end assembly with UHMW polyethylene bushings on the chassis end to allow the rear suspension to move more freely and eliminate bushing bind. All parts sold in pairs. - Adjustable arms offer easy wheelbase and pinion angle adjustment - Direct fit options for many popular GM, Ford & Mopars - Easy, bolt-in install - Made in the USA This Part Fits: Year Make Model Submodel 1970,1972 Buick Skylark 350 1968-1972 Buick Skylark Base 1968-1972 Buick Skylark Custom 1968-1969 Buick Special Base 1968 Chevrolet Chevelle 300 1968-1969 Chevrolet Chevelle 300 Deluxe 1970-1972 Chevrolet Chevelle Base 1968-1972 Chevrolet Chevelle Concours 1969-1972 Chevrolet Chevelle Concours Estate 1969-1972 Chevrolet Chevelle Greenbrier 1968-1972 Chevrolet Chevelle Malibu 1968-1972 Chevrolet Chevelle Nomad 1968 Chevrolet Chevelle Nomad Custom 1971-1972 Chevrolet Chevelle SS 1968-1970 Chevrolet Chevelle SS 396 1968-1972 Chevrolet El Camino Base 1968-1972 Chevrolet El Camino Custom 1968-1972 Chevrolet El Camino SS 1970-1972 Chevrolet Monte Carlo Base 1971-1972 GMC Sprint Base 1972 GMC Sprint Custom 1968-1971 Oldsmobile 442 Base 1968-1972 Oldsmobile Cutlass Base 1972 Oldsmobile Cutlass Cruiser 1968,1971-1972 Oldsmobile Cutlass S 1968-1972 Oldsmobile Vista Cruiser Base 1969-1972 Pontiac Grand Prix Base 1968-1972 Pontiac GTO Base 1970-1971 Pontiac GTO The Judge 1968-1972 Pontiac LeMans Base 1972 Pontiac LeMans Luxury 1969-1970 Pontiac LeMans Safari 1970-1972 Pontiac LeMans Sport 1971 Pontiac LeMans T37 1968-1970 Pontiac Tempest Base 1968-1969 Pontiac Tempest Custom 1970 Pontiac Tempest GT 1968-1969 Pontiac Tempest Safari ## Details - **Price:** 540.17 CAD - **Vendor:** QA1 - **Type:** Control Arms ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 540.17 CAD | In stock | ## Images - Photo - Primary - Photo - Primary - Logo Image --- > Source: [Standard Auto Part](https://www.standardautopart.com/products/qa1-68-72-gm-a-body-upper-adjustable-trailing-arms) > Updated: 2026-06-27