Alignment Camber Adjusting Eccentric

What Is an Alignment Camber Adjusting Eccentric?

Camber — the inward or outward tilt of a wheel when viewed from the front of the vehicle — is one of the most critical alignment angles affecting tire wear, handling stability, and straight-line tracking. When camber drifts out of spec due to suspension wear, collision damage, a lift or lowering kit, or simply the passage of time, an alignment camber adjusting eccentric gives technicians and enthusiasts a precise, repeatable method to bring it back into range.

An eccentric is a specially offset bolt, sleeve, or cam element installed at a suspension pivot point — typically where the strut knuckle meets the lower or upper mounting bracket. Because the bolt and cam surfaces are eccentrically arranged, rotation of the bolt adjusts the position of its longitudinal axis within the slotted holes of the frame member, allowing positional adjustment of a control arm or other suspension component secured to that mounting point. The result is a controlled, tool-friendly way to dial in exact camber without needing to replace entire suspension arms or fabricate custom hardware.

Why Camber Eccentrics Matter

Many modern vehicles — especially those with MacPherson strut front suspensions — leave the factory with little or no built-in camber adjustment. Lowered and lifted vehicles affect alignment angles and often need adjustments beyond factory component capabilities, and this is precisely where eccentric hardware becomes indispensable. Even stock-height vehicles can lose their factory alignment settings over years of road use, and without adjustable eccentric hardware, the only fix may be expensive OEM arm replacement.

Once a desired position of the suspension component is achieved, the nut is tightened to secure the bolt in position — and maintaining a properly tightened bolt arrangement is required to keep the set position under vehicle usage. This simple but elegant mechanism means a single technician can make fine adjustments efficiently and lock them in reliably.

What to Consider When Shopping

• Adjustment Range: Eccentrics vary widely in how much correction they provide. Some EZ Cam-style eccentrics make non-adjustable two-bolt struts adjustable up to +/- 1.75° of camber change, while other kits offer even broader correction for heavily modified vehicles.
• Application Fit: Always verify the bolt diameter, thread pitch, and suspension type (strut vs. control arm) for your specific year, make, and model before ordering.
• OEM vs. Aftermarket: Stock replacements restore factory geometry; performance-grade eccentrics may unlock greater adjustment range for track use or lifted/lowered applications.
• Hardware Inclusion: Many kits include cam washers, lock nuts, and sleeves — check that all needed hardware is bundled for a complete installation.

Top Brands for Alignment Camber Adjusting Eccentrics

SPC Performance is widely regarded as the industry leader in alignment adjustment hardware. While SPC started in the business of providing alignment shops with parts and tools to get the job done, it was a natural progression that these components found their way into performance and racing applications — with solutions now covering lifted trucks, lowered vehicles, classic and modern muscle cars, and dedicated racing applications.

Genuine OEM-sourced eccentrics are the go-to choice when you need to restore factory-spec geometry exactly as the manufacturer intended. Genuine OEM cam bolts, sleeves, and alignment camber adjusting eccentric kits are engineered to match the original design specifications of the vehicle, making them ideal for warranty-conscious repairs and precise factory restoration.

VNE rounds out the category with a focused selection of eccentric alignment hardware suited for a range of domestic and import applications, offering a reliable choice for shops and DIYers seeking solid fitment at a practical price point.

ACDelco brings its trusted GM-heritage quality to this category. ACDelco GM Genuine Parts and ACDelco Original Equipment are designed and engineered to meet the rigorous standards set by General Motors, making their eccentric bolt kits a natural fit for GM vehicles needing precise camber correction. ACDelco Professional Alignment Camber Kits are precision-designed to complete a proper four-wheel alignment, which is essential for safe vehicle operation.

OEM parts in this category provide vehicle-specific eccentric hardware sourced to original equipment specifications, ensuring correct geometry restoration for makes and models where exact-fit hardware is non-negotiable.