A-Arm Caster Slug Centered 10pk

The A-Arm Caster Slug Centered 10pk from ALLSTAR PERFORMANCE is a critical alignment tool for suspension geometry setup and front-end work on street cars, race vehicles, and shop builds. Caster slugs are precision spacers used during A-arm installation to establish correct caster angle—a fundamental suspension parameter that affects steering feel, directional stability, and tire wear. If you're rebuilding a front suspension, correcting alignment issues, or fine-tuning geometry on a performance build, these centered slugs allow you to dial in the exact caster specification your vehicle requires.

Caster angle is the forward or rearward tilt of the steering axis relative to vertical; positive caster improves high-speed stability and self-centering while negative caster reduces steering effort. The centered design of this slug pack ensures even load distribution and repeatable geometry when installed between the upper and lower control arm pivot points. The 10-pack quantity accommodates multiple vehicle projects or provides spares for suspension shops and race teams. Compact at 4.25 x 1 x 7 inches and weighing just 0.2 lbs per pack, these slugs are engineered for durability and precision fit, making them compatible with most domestic and late-model import A-arm platforms that follow standard bushing and bolt spacing.

Professional mechanics, suspension specialists, and serious enthusiasts rely on ALLSTAR caster slugs when performing front-end builds, alignment corrections, or geometry optimization. Installation requires removal of the control arm from the frame, positioning the slug at the pivot point, and re-torquing to specification—a task well within reach of experienced DIY builders with basic hand tools and a shop manual. Stock 10-pack format makes these ideal for high-volume shops or as inventory replenishment for ongoing suspension work. Verify your vehicle's A-arm mounting bolt diameter and bushing configuration before ordering to ensure proper fit and geometry results.