The ZeroRC SR-OP-4 (specifically SR-OP-4-2) is the specialized Metal Front Knuckle Set designed specifically for the All-Wheel Drive (AWD) configuration of the RW00-SR chassis.
 
Key Features of the AWD Metal Knuckles:
 
Unlike the RWD (MR) version, these knuckles are engineered to accommodate the front drive shafts required for AWD drifting:
AWD Compatibility: Features enlarged internal clearance and specific bearing seats to house the front CVD (Constant Velocity Drive) shafts without binding during high-angle turns.
Material: CNC-machined from high-grade aluminum with the signature ZeroRC Purple anodized finish.
Precision Steering: Replaces the standard plastic knuckles to eliminate "flex," ensuring the front wheels maintain a consistent line even under the pull of the front motor/belt.
Adjustable Geometry: Designed to allow for high-angle steering lock, which is critical for maintaining control in AWD "counter-steer" drift styles.