Hawk HB803W.639 DTC-30 Rear Brake Pads for Ford Mustang GT EcoBoost 2015-23

Vehicle Fitment

• 2015-2023 Ford Mustang EcoBoost / EcoBoost Premium (S550, 2.3L EcoBoost I4, RWD) - Rear, w/ and w/o Performance Package
• 2015-2023 Ford Mustang GT / GT Premium (S550, 5.0L Coyote V8, RWD) - Rear, Manual and Automatic Transmission
• 2015-2017 Ford Mustang V6 / V6 Premium (S550, 3.7L Cyclone V6, RWD) - Rear
• 2015 Ford Mustang GT 50 Years Limited Edition (5.0L Coyote V8, RWD) - Rear
• 2016-2017 Ford Mustang w/ Brembo Package (5.0L Coyote V8, RWD) - Rear
• 2019-2020 Ford Mustang Bullitt (5.0L Coyote V8, RWD) - Rear
• 2021-2023 Ford Mustang Mach 1 (5.0L Coyote V8, RWD) - Rear

Fitment Notes

• Position: Rear axle only for all applications listed above.
• Not compatible with carbon ceramic rotors. For use with iron/metal rotors only.
• This pad fits the OEM rear caliper of the S550-generation Ford Mustang (2015-2023) across all available engine options and trim levels, including Brembo front brake package variants. The rear caliper is the same regardless of front brake package configuration on these vehicles.
• From the 2021 model year onward, some Hawk database entries note "6 Piston Front Caliper" alongside certain Mustang GT and EcoBoost trim entries. This notation identifies the front brake package variant for reference only - the rear caliper covered by this pad is the same across all 2021-2023 S550 Mustang configurations.
• The 3.7L V6 was available in the S550 Mustang for 2015-2017 only; it was discontinued after the 2017 model year.
• The Mustang GT 50 Years Limited Edition (2015), Bullitt (2019-2020), and Mach 1 (2021-2023) are special edition variants of the standard GT platform and share the same rear caliper.
• DTC-30 is a motorsport race compound. It operates effectively from ambient temperature through its full range, making it one of the more streetable DTC compounds, but its dust and noise output are substantially higher than street compounds. It is best suited for dedicated track and autocross vehicles or dual-use owners willing to accept those trade-offs.
• On the Mustang platform, DTC-30 is a popular rear pairing with DTC-60 at the front for competitive autocross where split friction between axles is desired - the DTC-30's controlled rear torque and excellent release characteristics help maintain rear chassis balance and prevent rear brake lockup at the competition driving thresholds these vehicles reach.

Features

• DTC-30 Ferro-Carbon compound - Hawk's multi-purpose motorsport formulation with uniquely controllable torque, smooth consistent feel, and superior release characteristics, engineered for the Mustang's rear caliper in competitive autocross, club racing, and HPDE use where consistent, predictable rear brake engagement is critical to chassis balance on a high-powered rear-wheel-drive platform.
• Effective from cold through the full operating range - Unlike higher-temperature DTC compounds, DTC-30 delivers effective rear brake torque from ambient temperature, making it appropriate for autocross competition where rear brakes start cold at each run - a key advantage for Solo II competitors and HPDE drivers whose rear brakes never fully heat up during short session segments.
• Smooth and controllable rear torque - The DTC-30's defining characteristic is its smooth, progressive initial bite and predictable torque delivery at the rear caliper, which is particularly well-suited to the RWD Mustang platform where abrupt rear brake engagement would compromise chassis balance, promote oversteer, and disrupt corner entry - making controlled rear brake application as important as maximum rear torque at the performance driving threshold.
• Superior release and rear torque control - Clean, consistent rear brake release is fundamental to corner exit performance on the rear-wheel-drive Mustang. The DTC-30's release characteristics ensure the rear brakes disengage cleanly and predictably at corner exit, supporting stable traction and power delivery without residual rear brake drag.
• Wide effective temperature range - 100-1,200°F total range (optimal: 100-800°F), spanning the rear brake temperatures generated by everything from cold competition starts through sustained HPDE sessions and back-to-back autocross runs on the Mustang GT and EcoBoost.
• Very low rear rotor wear - Produces significantly lower rear disc wear than DTC-60 and DTC-70, extending rotor service life across competitive seasons and reducing long-term maintenance costs for Mustang owners who compete regularly.
• Popular rear pairing with DTC-60 front - Hawk specifically recommends DTC-30 as a rear compound pairing with DTC-60 at the front for split friction setups on smaller, lighter vehicles - a configuration widely used by competitive autocross and club racing Mustang drivers who want maximum front bite while maintaining controllable, fade-resistant rear torque that supports rather than disrupts the car's handling balance.
• 100% asbestos, lead, chromium, cadmium, and antimony free - Manufactured in an ISO-certified facility to strict quality and environmental standards.

Specifications

• Part Number: HB803W.639
• Compound: DTC-30
• Compound Code: W
• Friction Material: Ferro-Carbon
• Pad Thickness: 0.639 in.
• Total Operating Temperature Range: 100-1,200°F
• Optimal Temperature Range: 100-800°F
• Torque Level: Controllable / Medium
• Position: Rear
• Caliper: OEM Rear Caliper - Ford Mustang S550 2015-2023 (all engines and trim levels)
• Electronic Wear Sensor: Not included
• Hardware: Not included
• Rotor Compatibility: Iron/metal rotors only - not compatible with carbon ceramic rotors
• Recommended Use: Autocross / Track Day / HPDE / Club Racing - streetable but with increased dust and noise
• Sold as: Set

Included Components

• 2x Hawk DTC-30 Rear Brake Pads (HB803W.639)

Product Description

The Hawk HB803W.639 DTC-30 rear brake pads fit the OEM rear caliper of the S550-generation Ford Mustang (2015-2023) across every available engine and trim level: the 2.3L EcoBoost I4 (with and without Performance Package), 3.7L V6 (2015-2017), 5.0L Coyote V8 in all GT variants, and all special editions including the GT 50 Years Limited Edition, Bullitt, Mach 1, and Brembo Package configurations. The rear caliper is consistent across all S550 brake packages.

DTC-30 is the optimal rear compound for S550 Mustang owners who compete at autocross events and club racing where controlled, predictable rear brake torque is more valuable than maximum rear bite. Its smooth initial engagement and exceptional release characteristics are especially well-suited to the Mustang's rear-wheel-drive platform, where abrupt rear brake application at the limit directly compromises chassis balance and corner entry stability. DTC-30 is the standard rear pairing recommendation when running DTC-60 at the front for split friction setups - a configuration that gives competitive Mustang autocross drivers maximum front deceleration with a rear compound tuned to support rather than upset the car's balance under hard braking. The compound is effective from cold, covering the full temperature envelope of competitive autocross from the first run of the day through the final heat. Expect substantially more dust and noise than street compounds.

This pad is for the rear axle only. A separate front pad is required for a complete brake upgrade. Compatible with iron and metal rotors only; carbon ceramic brake discs are not supported.