Girodisc GP-Series Rear Brake Pads 6027
Subaru WRX STI ('18+)
Girodisc GP-Series rear pads for the 2018+ Subaru WRX STI deliver race-bred braking performance with three compound options to match your driving style. All variants use the GP 6027 pad shape and are designed exclusively for Girodisc Iron Conversion rear rotor systems, providing consistent modulation, excellent heat control, and dependable pedal feel.
Fits the Following Vehicles:
| Make |
Model |
Years |
Front |
Rear |
| Subaru |
WRX STI (Girodisc Iron Conversion) |
2018–2021 |
|
X |
Available Compounds
GP10 Street Compound
Ideal for daily driving and spirited canyon or light track use. Low dust, excellent cold bite, smooth modulation, and stable friction without excessive rotor wear.
GP35 Race Compound
A versatile track-focused pad with stronger initial bite, higher temperature capacity, and excellent modulation—great for aggressive HPDE or sprint racing.
GP40 Sprint Race Compound
High-friction sprint compound engineered for short, intense sessions. Delivers immediate bite, firm pedal feel, and reliable release characteristics under high heat.
Features
• Direct replacements for Girodisc pad shape 6027
• Stable friction across a wide temperature range
• Excellent heat control and pedal modulation
• Designed exclusively for Girodisc Iron Conversion rear systems
• Sold/priced per axle set
Specifications
• Pad Shape: 6027
• Position: Rear
• Compounds Available: GP10, GP35, GP40
• Vehicle Fitment: Subaru WRX STI (2018–2021) with Girodisc rear setup
• Compatibility: Girodisc Iron Conversion systems only
• Contents: One axle set (pair of pads)
Girodisc GP-Series Pad FAQs
Do these pads fit the OEM Brembo rear calipers and rotors? No. These pads are sized for Girodisc Iron Conversion rear systems and are not intended for factory rotors.
Which compound should I pick for mostly street use? GP10. It offers low dust, quiet operation, and strong cold performance with predictable pedal feel.
Can I run GP35 or GP40 on the street? You can, but expect more noise/dust and reduced cold bite compared to GP10—these compounds are optimized for higher track temperatures.
Do these pads require bedding? Yes. Proper bedding is essential to establish an even transfer layer and achieve maximum braking performance and consistency.
