11-1/2in Upper A Arm Slotted 0 Degrees

The 11-1/2 inch upper A arm slotted 0 degrees by Howe is engineered for serious suspension builders and racers who demand precision geometry control in their vehicle platforms. This component serves as the foundation for front-end suspension tuning, allowing mechanics and fabricators to dial in camber, caster, and ride height settings with exact repeatability. Whether you're constructing a competition-grade hot rod, building a vintage race car, or fine-tuning a modern performance platform, this upper control arm delivers the adjustability that separates amateur builds from championship-caliber suspensions.

Manufactured by Howe, a recognized leader in high-performance suspension components, this upper A arm features slotted mounting holes at 0 degrees—a design that provides incremental adjustment capability for fine-tuning front-end geometry without requiring complete component replacement. The slotted configuration allows you to modify camber curves and ball joint positioning in small increments, accommodating different track conditions, tire profiles, or spring rates. Weighing 5.15 pounds with compact, manageable dimensions (13 x 2.3 x 14.5 inches), this arm maintains structural integrity while remaining lightweight enough for performance applications where unsprung weight matters. The precision construction ensures consistent geometry across multiple corner adjustments and extended racing sessions.

This slotted upper A arm is ideal for fabricators building custom street rods, circle-track racers optimizing setup for specific venues, and performance shops constructing independent front suspensions on classic or vintage platforms. Installation requires proper suspension geometry knowledge—alignment specialists and experienced mechanics should verify camber, caster, and kingpin inclination (KPI) angles after installation to ensure optimal tire contact and handling balance. The 0-degree slot orientation makes this arm compatible with traditional control arm mounting points while offering the adjustment range needed for both street-driven and competition-focused builds. Proper installation and geometry verification are essential to maximize tire life, cornering stability, and overall suspension performance.