Shimano N03A-RF Disc Brake Pad and Spring - Resin | Finned | One Pair

Shimano N03A-RF Disc Brake Pad and Spring - Resin | Finned | One Pair Shimano

Shimano N03A-RF Disc Brake Pad and Spring - Resin | Finned | One Pair

Shimano N03A-RF Disc Brake Pad and Spring - Resin | Finned | One Pair

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Is the Shimano N03A-RF the Right Pad for Your 4-Piston MTB Brake?

The Shimano N03A-RF is the OEM replacement disc brake pad for Shimano's 4-piston MTB hydraulic calipers, specifically the XTR BR-M9120, Deore XT BR-M8120, SLX BR-M7120, and BR-U8020 series. Built with 3rd-generation resin friction material, the N03A-RF delivers quieter braking and improved modulation compared to sintered compounds, making it a strong choice for riders who prioritize feel and noise reduction over maximum bite. The integrated alloy radiator fin actively dissipates heat generated during sustained braking, providing longer pad life and more consistent feel on extended descents where 4-piston brakes work hardest.

The narrow type N pad shape is purpose-designed for 4-piston Shimano MTB calipers and uses an alloy back plate for rigid pad support with minimal weight. Unlike 2-piston pad families with broad compatibility across many calipers, the N03A-RF has a focused compatibility list: BR-M9120, BR-M8120, BR-M7120, and BR-U8020 only. Each package includes one pair of pads with spring. If you are running any of these 4-piston Shimano calipers and want a resin option with heat management built in, the N03A-RF is the correct OEM choice.

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  • Estimated delivery: May 24 - May 28

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Specifications

  • Model: BP-N03A-RF
  • Lining Material: Resin (3rd generation)
  • Pad Shape: Narrow type, N
  • Piston Compatibility: 4-piston brake caliper
  • Back Plate: Alloy
  • Radiator Fin: Yes -- alloy fin for heat dissipation
  • Package: 1 pair with spring
  • Compatible Calipers: BR-M9120 (XTR), BR-M8120 (Deore XT), BR-M7120 (SLX), BR-U8020

FAQ

Will the N03A-RF fit my Shimano XT M8100 2-piston caliper?

No. The N03A-RF is designed exclusively for 4-piston calipers: BR-M9120, BR-M8120, BR-M7120, and BR-U8020. The 2-piston M8100 caliper (BR-M8100) uses a different pad family such as the J05A-RF or J05A-MX.

What is the benefit of resin over sintered pads for 4-piston brakes?

Resin pads like the N03A-RF are quieter and offer better initial bite feel and modulation, especially in dry to mixed conditions. Sintered pads handle more heat and last longer in wet or sustained braking conditions but can be noisier and harder on rotors.

Does this pad include a spring?

Yes. Each package includes one pair of N03A-RF pads with the retaining spring included.

Best For

Enduro and trail riders running 4-piston Shimano XTR M9120, Deore XT M8120, or SLX M7120 calipers who prefer resin braking feel with the added heat protection of a radiator fin for technical mountain terrain.

Shimano N03A-RF Disc Brake Pad and Spring - Resin | Finned | One Pair Reviews:

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