EBC Brakes Racing has introduced the GPFAX D2, a new flagship track and race motorcycle brake pad as an alternative to the company’s original GPFAX compound. According to EBC Brakes Racing — the motorsport division of EBC Brakes, which also offers a broader lineup of track and race braking components — GPFAX D2 is built for improved durability, enhanced feel, and more consistent torque output than its predecessor. The compound is available now in two part numbers covering a range of caliper fitments, with buyers directed to EBC’s dealer locator to find a retailer. The company says the update prioritizes consistency and predictability at the limit over chasing peak torque figures.
Highlights
- Pad: GPFAX D2 offered alongside EBC Brakes Racing’s original GPFAX compound as the company’s flagship motorcycle track and race brake pad.
- Torque linearity: The company says the pad delivers a low initial torque rise with a linear increase in braking force as pressure input rises, and stable performance across speed and temperature.
- Reduced wear: In back-to-back testing, EBC reports GPFAX D2 showed significantly reduced wear rates compared to the previous generation.
- Two part numbers: GPFAX447HH-D2 covers M4, M430, M50, GP4-RX, GP4-RS, and Stylema calipers, while GPFAX630HH-D2 fits the M432 (M4.32) caliper.
Built for Precision and Control
EBC Brakes Racing says GPFAX D2’s defining characteristic is torque linearity — a smooth, predictable relationship between lever input and braking force from initial application through maximum braking force. The company describes the response in three parts:
- Low initial torque rise for improved modulation
- Linear torque increase with pressure input
- Stable performance regardless of speed or temperature
The company says the design means braking force scales proportionally with lever pressure, which it says gives riders confidence to brake later into a corner.
Progressive Feel Under Load
Rather than an aggressive, spiky initial bite, EBC designed GPFAX D2 to build braking force progressively through the stop. The company says that translates to a controlled, predictable feel that allows for precise adjustments mid-corner and under heavy load.
Reduced Wear Compared to the Predecessor
Durability was a design target alongside outright stopping performance. EBC reports that in back-to-back testing, GPFAX D2 showed significantly reduced wear rates compared to the earlier GPFAX pad, extending pad life without a stated tradeoff in braking performance, according to the company. That earlier compound has already seen competitive use, equipping racers such as British National Superstock competitor Max Symonds during a pre-season test at Jerez, Spain.
Validated Through Dyno Testing
EBC Brakes Racing says dyno testing produced clean, repeatable torque traces that stayed stable across varying pressures and temperatures, consistent with the compound’s design targets for track and race use.
Available Fitments
- GPFAX447HH-D2 — fits M4, M430, M50, GP4-RX, GP4-RS, and Stylema calipers
- GPFAX630HH-D2 — fits the M432 (M4.32) caliper
GPFAX D2 is available now through EBC’s retail network.
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