Wilwood 140-17936 Front DPL/ST Road Race Disc Brake Kit with 11.75" Rotors

The Wilwood 140-17936 is a dedicated road race front disc brake kit engineered for the Mazda MX-5 Miata. Built around Wilwood's proven DPL/ST four-piston caliper platform and oversized 11.75" GT competition rotors, this kit delivers the thermal endurance, consistent pedal feel, and fade resistance demanded by sustained high-speed competition. Requires 15" wheels with sufficient inside clearance to accommodate the larger-than-stock brake package.

DPL/ST Four-Piston Calipers:

• Forged aluminum caliper body finished in Type III Mil-Spec hard anodized medium gray — provides superior wear resistance in piston bores and high resistance to abrasion and corrosion
• Thermlock® pistons reduce heat transfer from pads to caliper, extending service life by lowering temperatures in the caliper body, brake fluid, and seals
• Internal damper springs and controlled-retraction, high-temperature piston seals deliver consistent pedal height from the start of a session to the finish
• Piston volumes sized for compatibility with OE power brake boosters and master cylinders; easily adapted to manual brake conversions and balance bar pedal setups with appropriately sized master cylinders

Spec37 Alloy GT Competition Rotors:

• 11.75" diameter, 40-vane GT competition series rotors cast from Wilwood's proprietary Spec37 iron alloy for maximum resistance to distortion, warping, cracking, and wear under sustained high heat
• Mounted to weight-saving forged aluminum lug mount hats to minimize unsprung and rotating mass
• High cooling efficiency supports rugged durability and thermal stability in extended competition use

Complete Kit Contents:

• DPL/ST four-piston front calipers (pair)
• 11.75" Spec37 alloy 40-vane GT competition rotors with forged aluminum hats
• High-temperature, high-friction endurance compound race brake pads selected specifically for this application
• Stainless steel braided brake flexlines for a complete bolt-on installation
• Mounting brackets and all premium-grade fasteners — mounts calipers in the stock location with no modifications required

The Wilwood 140-17936 front brake kit is a race-tested, bolt-on solution that upgrades stopping performance at every level — from caliper technology to rotor metallurgy to pad compound — making it the definitive front braking upgrade for Mazda MX-5 Miata road racing applications.