Rotor HD48 SPC37 LH 11.75 x 1.21 - 8 on 7.00

The Wilwood Rotor HD48 SPC37 Left-Hand 11.75 x 1.21 - 8 on 7.00 is a premium brake rotor engineered for high-performance stopping power on vehicles requiring serious braking capability. This left-hand directional rotor features an 11.75-inch outer diameter and 1.21-inch thickness, designed to dissipate heat efficiently during sustained braking operations—critical for both street and track applications where brake fade cannot be tolerated.

The 8 x 7.00-inch bolt pattern integrates seamlessly with compatible brake systems, while the cast-iron construction with natural finish provides proven durability and consistent friction characteristics across varying temperatures. At 10.3 pounds, the rotor's mass is optimized for thermal capacity without creating excessive rotational inertia. The directional design channels cooling air through internal vanes for maximum heat rejection, a critical specification for high-demand braking scenarios where rotor temperatures exceed 800°F during aggressive deceleration.

Operators and drivers working with performance platforms—law enforcement pursuit vehicles, tactical training facilities, off-road recovery operations, and motorsports applications—rely on Wilwood rotors to maintain consistent stopping performance under extreme conditions. The left-hand specification ensures proper fitment for applications where directional orientation matters for brake package clearance and thermal flow. This OEM-quality component integrates with high-performance pad compounds to deliver repeatable, fade-resistant braking that meets the demands of extended duty cycles.