These over-the-road heavy duty adjusters are a fast and accurate means to align front or rear axles of most popular tandem trailers and trucks. You now have reliable means to complete total heavy duty truck alignments. Spacers for Kenworth Air Glide "Eight Baggers". Six shims per box.

California Residents WARNING

These over-the-road heavy duty adjusters area fast and accurate means to align front or rear axles of most popular tandem trailers and trucks. You now have reliable means to complete total heavy duty truck alignments. Spacers for Kenworth Air Glide "Eight Baggers". Six shims per box.

California Residents WARNING

These over-the-road heavy duty adjusters are a fast and accurate means to align front or rear axles of most popular tandem trailers and trucks. You now have reliable means to complete total heavy duty truck alignments. Spacers for Kenworth Air Glide "Eight Baggers". Six shims per box.

California Residents WARNING

These Peterbilt Air Leaf Adjusting Shims adjust thrust angle and toe by placing the shim between the spring hanger and the spring. Six shims per box.

California Residents WARNING

These Peterbilt Air Leaf Adjusting Shims adjust thrust angle and toe by placing the shim between the spring hanger and the spring. Six shims per box.

California Residents WARNING

These Peterbilt Air Leaf Adjusting Shims adjust thrust angle and toe by placing the shim between the spring hanger and the spring. Six shims per box.

California Residents WARNING

Adjust pinion angle on the drive axle of your Peterbilt Low Air Leaf with 'Z-Springs' using this 1.0° shim. The OE shim is aluminum and does not last under load; the SPC Zinc shim is built to last.

California Residents WARNING

Adjust pinion angle on the drive axle of your Peterbilt Low Air Leaf with 'Z-Springs' using this 1.5° shim. The OE shim is aluminum and does not last under load; the SPC Zinc shim is built to last.

California Residents WARNING

Adjust pinion angle on the drive axle of your Peterbilt Low Air Leaf with 'Z-Springs' using this 2.0° shim. The OE shim is aluminum and does not last under load; the SPC Zinc shim is built to last.

California Residents WARNING

Adjust front camber and caster ±1.5° on the Audi C8 platform with these forged aluminum adjustable control arms from SPC. OE style booted ball joints and bonded rubber bushings maintain factory ride, handling and noise, vibration, & harshness (NVH) parameters. Audi's unique multi-link suspension creates a 'Virtual' SAI. The factory does not publish specifications for caster, but SPC recommends 5° to 6° of caster as a preferred angle for tracking and return to center on these cars. This kit includes two arms to replace the two front upper arms on the left hand (LH) side. For the right hand (RH) side, use part number #81392. Want to be able to adjust both sides? Use part number #81393.

SPC arms feature:
Forged 6061-T6 Aluminum contruction for maximized strength at a minimum weight
OE style, maintenance free, booted ball joints
Large 18mm threaded adjuster links
Replacement pinch bolts included

Need to replace the ball joint boots on tehse arms? We have replacement kits available! Part No. 81354.

California Residents WARNING

Adjust front camber and caster ±1.5° on the Audi C8 platform with these forged aluminum adjustable control arms from SPC. OE style booted ball joints adn bonded rubber bushings maintain factory ride, handling and noise, vibration, & harshness (NVH) parameters. Audi's unique multi-link suspension creates a 'Virtual' SAI. The factory does not publish a specification for caster, but SPC recommends 5° to 6° of caster as a preferred angle for tracking and return to center on these cars. This kit includes four arms to replace both upper links on both sides of the vehicle. For the left hand (LH) side, use #81391. For the right hand (RH) side, use part number #81392.

SPC Arms Feature:
Forged 6061-T6 Aluminum contruction for maximized strength at a minimum weight
OE style, maintenance free, booted ball joints
Large 18mm threaded adjuster links
Replacement pinch bolts included

Need to replace the ball joint boots on these arms? We have replacement kits available! Part No. 81354.

California Residents WARNING

Adjust front camber and caster ±1.5° on the Audi C8 platform with these forged aluminum adjustable control arms from SPC. OE style booted ball joints and bonded rubber bushings maintain factory ride, handling and noise, vibration, & harshness (NVH) parameters. Audi's unique multi-link suspension creates a 'Virtual' SAI. The factory does not publish a specification for caster, but SPC recommends 5° to 6° of caster as a preferred angle for tracking and return to center on these cars. The kit includes two arms to replace the two front upper arms on the right hand (RH) side. For the left hand (LH) side, use part number #81391. Want to be able to adjust both sides? Use part number #81393.

SPC Arms Feature:
Forged 6061-T6 Aluminum contruction for maximized strength at a minimum weight
OE style, maintenance free, booted ball joints
Large 18mm threaded adjuster links
Replacement pinch bolts included

Need to replace the ball joint boots on these arms? We have replacement kits available! Part No. 81354.

California Residents WARNING