Collection: SPC Performance Alignment Parts

Who SPC Performance is

SPC is short for Specialty Products Company, an alignment parts and tools maker based in Longmont, Colorado. The company's own site calls it a leader in alignment parts, tools and education, and that is the best summary of what it does: SPC makes the parts that let an alignment shop get camber, caster and toe back into spec when the factory adjustment runs out. Its catalog covers xAxis control arms and joints, EZ Arms and EZ Cams, camber and caster parts, ball joints, shims for trucks, and shop tools, along with installer training and an alignment app.

That makes SPC a different kind of brand from a coilover or lift kit maker. You usually buy SPC parts after the big change, once you have lowered or lifted the car and the alignment readout shows numbers the stock bolts can't fix.

SPC product lines we carry

Counts and prices are from our store in October 2026.

The other eight listings are hardware kits, ball joint plates, a cross shaft, a SpecRide bushing kit and a JounceShock system for $507.99.

How to choose between SPC's lines

Cam bolts and offset ball joints: small corrections

If you need a degree or two, start here. Cam bolt kits on our store run $91.99 to $110.99, and the listings state their range, for example plus or minus 1.5 degrees of camber for the 25440 kit on 2013 to 2024 Toyota and Lexus models. Offset ball joints such as the 23540 for 2007 to 2018 Jeep and Dodge are $113.99. These are the cheapest fixes and keep the stock arms, but the adjustment range is limited.

EZ Arms and camber arms: lowered cars

Lowered cars usually end up with too much negative camber at the rear, and many have no factory adjustment there. SPC's bolt-in rear arms fix that. The 67265 EZ Arms XR listing says it is designed for cars lowered up to 3 inches, and arms like the 67467 for 2016 to 2025 Honda models list a camber range of minus 3 to plus 3 degrees. Expect $151.99 to $303.99 for most of them.

xAxis upper control arms: lifted trucks

Leveling or lifting a truck pulls the front camber and caster out of range, and the upper arm is the place to fix both. SPC's site lists xAxis arms with sealed flex joints in bonded rubber bushings, built-in positive caster for lifted trucks, and a larger ball joint stud than stock. The listings on our store state 0 to plus 4 degrees of caster and plus or minus 2 degrees of camber on most fitments. They cost $936.99 to $1,121.99 a pair, so they make the most sense on trucks that already have a leveling or lift kit.

Classic arms and caster rods

For older cars, SPC sells adjustable arms for 1966 to 1977 classics, 1971 to 1982 Corvettes, 1967 to 1973 Ford and Mercury models, and 1993 to 2004 GM models. These run $307.99 to $1,210.99 and suit restomods where you want more caster and a better camber curve than the old geometry allows.

Fitment coverage

Most SPC titles on our store don't name the vehicle, so check the fitment details on each listing. The makes listed in the descriptions include:

• Trucks and SUVs: Ford and Lincoln (xAxis arms and ball joints), Toyota and Lexus (arms, cam bolts, bushing kits), Jeep and Dodge (offset ball joints, camber kits) and older Ford trucks (caster sleeves). See F-150 suspension and Tacoma and 4Runner suspension.
• Cars: Honda and Acura, Nissan and Infiniti, VW and Audi, and 2012 to 2023 Dodge and Chrysler LX cars. See Charger and Challenger suspension and Honda Civic suspension.
• Classics: GM, Corvette, Ford and Mercury.

What else you'll need

• An alignment. Every SPC part on this page is there to be adjusted. Budget for a shop alignment after install, and expect to need a shop that knows how to set adjustable arms.
• Ball joints and bushings. If your arms are original, check the joints first. Our ball joints and control arm bushings pages cover replacements, and the guide to bad ball joint symptoms explains what to look for.
• Tools. SPC's spring compressors, ball joint press and separators are on this page too, or browse spring compressors.

SPC compared with alternatives we carry

Megan Racing and Whiteline also sell adjustable arms and camber parts, and both have far bigger catalogs on our store for tuner cars. Megan Racing is the budget pick for import arms, while Whiteline leans on bushings and sway bars. SPC's strength is breadth across trucks, classics and everyday cars, plus small fixes like cam bolts and shims that the others don't focus on. For a lowered import, compare all three on our alignment and camber kits page. For a lifted truck, SPC's xAxis arms are the more specialized choice.

Warranty terms are set by each brand, so check SPC's own terms before you buy.

Popular picks

• SPC xAxis Performance Control Arms 35465, $992.99: adjustable upper arms listed for 2010 to 2021 Toyota and Lexus models.
• SPC xAxis Performance Control Arms 35680, $942.99: for 2010 to 2019 Ford and Lincoln models.
• SPC EZ Arms XR 67265, $177.99: rear camber fix for cars lowered up to 3 inches.
• SPC Adjustable Camber Arms 67467, $204.99: for 2016 to 2025 Honda models.
• SPC Camber/Caster Bolt Kit 25440, $110.99: cheap camber correction for 2013 to 2024 Toyota and Lexus.
• SPC FasTrax Camber Caster Gauge 91025, $460.99: for checking off-road alignment on 13 to 17 inch wheels.

Related guides

• Bad control arm bushing symptoms
• Bad ball joint symptoms
• F-150 leveling kit guide
• Wheel offset explained for lowered cars

Sources

• Specialty Products Company (SPC) home page
• SPC 35450 adjustable upper control arms
• SPC 35670 adjustable upper control arms