Wilwood 160-11836 HD 48 Curved Vane Spec-37 12.19 Iron Rotor Ring Plain LH

Vehicle Fitment

• Universal Fitment - Compatible with Wilwood two-piece rotor hat assemblies using an 8 x 7.00 in bolt circle and 6.38 in lug ID/registration

Fitment Notes

• This is a replacement rotor ring only - a separate Wilwood rotor hat is required for mounting
• Left-Hand (L/H) directional rotor - do not interchange with Right-Hand (R/H) part number 160-11835
• Designed for custom, race, and high-performance brake builds; not a direct OEM bolt-on replacement
• Verify hat offset and bolt circle compatibility before ordering

Features

• Manufactured from Wilwood's proprietary Spec-37 iron alloy for superior thermal resistance
• 48 curved vanes maximize airflow and heat dissipation during sustained braking
• HD (Heavy Duty) series construction with heavy-wall castings for long service life
• Plain face, smooth pad contact surface - no slots or drilling for consistent pad wear
• Engineered to resist distortion, warping, cracking, and wear under extreme temperatures
• Full detail machining for precise fit and minimal runout
• Alloy formulation derived from military-spec rotor technology developed by Wilwood
• Suitable for high-temperature racing and performance street applications

Specifications

• Part Number: 160-11836
• Rotor Diameter: 12.19 in
• Rotor Width: 1.25 in
• Mount Side: Left-Hand (L/H)
• Vane Count: 48 Curved Vanes
• Material: Spec-37 Iron
• Rotor Style: HD (Heavy Duty), Plain Face, Plain Finish
• Bolt Circle: 8 x 7.00 in
• Mount Hole Size: 0.316 in
• Lug ID / Registration: 6.38 in
• Far Side Inside Diameter: 8.41 in
• Weight: 12.70 lbs

Included Components

• 1x Wilwood HD 48 Curved Vane Spec-37 Iron Rotor Ring - Left-Hand (160-11836)

Product Description

The Wilwood 160-11836 is an HD 48 Curved Vane Spec-37 replacement rotor ring designed for serious performance and racing applications. Built from Wilwood's proprietary Spec-37 iron alloy - a formulation rooted in military-grade rotor technology - this rotor ring delivers exceptional resistance to heat-related distortion, warping, and cracking where it matters most.

The 48 curved vanes provide high-volume airflow through the rotor for aggressive heat dissipation, making this rotor well-suited for road course racing, short track competition, and demanding street use. The plain face, smooth pad contact surface ensures even pad bedding and consistent friction without the aggressive wear associated with slotted or drilled finishes. This is a Left-Hand (L/H) directional rotor and must be paired with a compatible Wilwood rotor hat using the matching 8 x 7.00 in bolt circle.