Shimano Disc Brake Pads - H03A
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eBayShimano H03A-RF - Resin Disc Brake Pads Alloy Backed with Cooling Fins
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Shimano H03A Resin Disc Brake Pads w/ Ice-Tech Fin fits BR-M8020/M820 as H01A£3.60 delivery£27.07Visit shop →
Shimano H03A Disc Brake Pads Alloy Backed Cooling Fins£3.00 delivery£34.99Visit shop →
Merlin CyclesShimano Black H03a Disc Brake Pads With Cooling Fins
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Leisure Lakes BikesShimano H03A Disc Brake Pads Alloy Backed with Cooling Fins
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Shimano H03A Disc Brake Pads Alloy Backed with Cooling FinsFree delivery in 1–3 days£34.99Visit shop →
OnBuy.comShimano Spares H03a Disc Brake Pads Alloy Backed With Cooling Fins Resin
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Product Information
Full details
The Shimano H03A Disc Brake Pads are engineered for mountain bikers and heavy-duty cyclists who require reliable 4-piston braking performance and consistent heat management. Featuring specialized Ice-Technologies cooling fins, these pads excel at maintaining stopping power during long, technical descents; however, riders should be aware that the resin compound may wear faster in extreme muddy or abrasive conditions compared to metallic alternatives.
All features
| Series | H03A |
|---|---|
| Model Part Number | Y1XM98020 |
| Brand | Shimano |
Extended Product Information
FAQs
Can I use these pads on 2-piston calipers?
No, the H03A pads are designed exclusively for 4-piston Shimano brake systems.
What is the primary benefit of the cooling fins?
The fins increase the surface area to dissipate heat quickly, reducing the risk of brake fade during long descents.
How do I know when to replace the pads?
Replace your pads when the friction material thickness drops below 0.5mm.
Are these pads compatible with all rotors?
These pads are intended for use with resin-compatible rotors; check your rotor for 'Resin Pad Only' markings.
Should I bed-in new brake pads?
Yes, always perform a series of 10-15 moderate speed stops to properly mate the pad surface to the rotor.
Troubleshooting
Brakes are making a squealing noise
Clean the rotor with isopropyl alcohol and ensure the pads are not contaminated with oil or lubricant.
Loss of stopping power
Check the thickness of the friction material; if the pad is worn down to the backing plate, replace the pads immediately.
Pros and Cons
Pros
- Significantly reduced brake noise compared to metal pads
- Excellent modulation and controllable stopping power
- Cooling fins effectively manage heat on long descents
- Easy to install with minimal break-in period
Cons
- Resin material may wear faster in gritty, muddy environments
- Less aggressive initial bite compared to sintered/metallic pads
- Requires specific 4-piston Shimano caliper compatibility
Setup, Compatibility & Care
Installation is straightforward: remove the wheel, retract the pistons using a plastic lever, slide out the old pads, and snap the H03A pads into the caliper. Ensure the cooling fins are correctly oriented toward the top of the caliper to maximize airflow. These pads are compatible with a wide range of Shimano 4-piston calipers, including the BR-M8120, BR-M8020, BR-M7120, BR-M6120, BR-M820, BR-M810, BR-M640, BR-MT520, and BR-MT420. To ensure peak performance, avoid using harsh degreasers near the rotor or pads, and always bed-in the new pads by performing several controlled stops on a flat surface before heading onto a steep trail.