Alignment Camber Adjusting Eccentric

What Is an Alignment Camber Adjusting Eccentric?

When your vehicle's wheels tilt inward or outward at the top — a measurement known as camber — tire wear becomes uneven, handling suffers, and your car or truck may pull to one side. An alignment camber adjusting eccentric is a specially shaped bolt or bushing with an offset center that allows technicians (and savvy DIYers) to dial in the precise camber angle required for a proper wheel alignment. By rotating the eccentric within its mounting hole, the position of the suspension component shifts slightly, changing the wheel's camber angle without requiring expensive aftermarket control arms or subframe modifications.

Why Camber Adjustment Matters

Camber is one of the three fundamental wheel alignment angles — alongside toe and caster — and even a small deviation from spec can have outsized effects on your vehicle. Negative camber (top of the wheel tilted inward) improves cornering grip but accelerates inner tread wear. Positive camber (top of the wheel tilted outward) can cause outer edge wear and reduce steering response. Most modern vehicles offer little to no factory camber adjustment, meaning that after a suspension repair, a collision, or a lift/lowering modification, getting back to spec requires a dedicated adjustment solution like an eccentric bolt or cam bolt kit.

Eccentric adjusters are especially critical on vehicles that have been lowered or lifted, as ride height changes inherently shift camber away from factory settings. Without correction, even a quality set of tires can wear out prematurely — costing far more than the alignment hardware itself.

How Eccentric Adjusters Work

Eccentric cam bolts and adjusting eccentrics feature an offset lobe or washer on the shank of the bolt. When the bolt is installed in the suspension mounting point and rotated, the offset shifts the attached component — such as a control arm, strut, or knuckle — inward or outward by a measured amount. This provides a defined range of camber correction (typically measured in degrees) without permanent modification to the vehicle's chassis. Once the desired angle is set, the bolt is torqued to spec and locked in place, maintaining the alignment through normal driving conditions.

What to Look for When Shopping

• Vehicle Fitment: Eccentrics are vehicle-specific. Always confirm the part matches your year, make, model, and suspension type.
• Adjustment Range: Check how many degrees of camber correction the eccentric provides — this determines whether it can compensate for your specific situation.
• Hardware Quality: Look for high-strength steel construction and corrosion-resistant coatings, especially if you live in a region with road salt or high humidity.
• Ease of Installation: Some kits are designed for straightforward bolt-in installation, while others may require pressing out factory hardware.

Top Brands in Alignment Camber Adjusting Eccentrics

SPC Performance is one of the most respected names in precision alignment hardware, with decades of experience engineering adjustable suspension components for both street and performance applications. Their camber adjusting eccentrics are engineered to exacting tolerances, offering reliable, repeatable adjustment ranges that make them a trusted choice among alignment professionals and enthusiasts alike.