Best N04C Brake Pads Alternatives (2026): 2 Picks

How to choose an N04C brake pad alternative

Match the pad shape first

Brake pads are not interchangeable between caliper families. The N04C is a narrow N-type pad for Shimano 4-piston calipers, the D03S is a narrow D-type pad, and 2-piston pads such as the Kool-Stop KS-D620 are a B-type shape that will never seat in a 4-piston caliper. Shape is decided by the caliper, not the bike, so identify your caliper model before comparing compounds. A wrong-shape pad is a return, not a compromise.

Pick the compound for your riding

Metal pads like the N04C bite hard and tolerate heat on long descents. Resin pads like the D03S run quieter and are kinder to rotors, at the cost of outright bite. E-bike compounds like Galfer’s G1652 are formulated for the heavier braking loads of assisted bikes and heavier riders. Be honest about your riding: most trail riders are better served by the quieter option than by the most aggressive compound in the catalog.

Decide whether you need fins

The stock N04C carries radiator fins that shed heat on sustained descents. The D03S is a fin-less D-type pad, simpler and quieter, and fine for most trail riding. Our sources do not confirm whether the Galfer FD426G1652 carries fins, so do not assume it does. If your rides regularly cook brakes on long descents, fins matter; for rolling singletrack, a well bedded fin-less pad is plenty.

Confirm your exact caliper model

Shimano’s C-192 chart is the authority here. The N04C is standard on BR-M9120 (XTR), BR-M8120 (XT), BR-M7120 (SLX) and BR-U8020, and an option on BR-M9220 and BR-M8220. It is not the stock pad for BR-M6120, BR-MT520 or BR-MT420, which ship with D-type pads. Read the model number stamped on your caliper body and match it to the chart rather than guessing from the bike’s spec sheet.

Check rotor condition first

New pads on a scored, thin or warped rotor will disappoint whatever the compound. Look for a wear lip, deep scoring or bluing, and replace a rotor that is below the maker’s minimum thickness before fitting fresh pads. A true, healthy rotor lets any of these alternatives bed in evenly and deliver the bite the compound promises. Skipping this check is the most common reason a pad upgrade feels like a downgrade.

Buy where the listing is verifiable

The genuine N04C had no verifiable Amazon listing in our research, so any listing claiming to be it deserves skepticism. Both alternatives below carry verified listing references with exact model numbers — FD426G1652 and BP-D03S-RX — so you can match your fitment before ordering. If a deal looks too convenient, for example an unknown brand claiming N04C fitment with no catalog behind it, walk away.

Vehicle data table: not applicable — this is not a 6D vehicle post. Brake pads are selected by caliper model and pad shape, not by vehicle weight, so no weight table is printed. Caliper fitment is covered in the finder above and in each product block below.

N04C alternatives by budget tier

Tiers are qualitative because listings vary by fitment and availability. How compounds differ is covered in our pillar guide, Best Brake Pads Material; browse the brake pads archive and the wider brakes, suspension and steering catalogue when planning the rest of the brake system.

Brake pad compound types compared

The full material-level breakdown behind these compound types — dust, noise and fade trade-offs — is our pillar guide Best Brake Pads Material.

Detailed reviews of the N04C alternatives

Each review below uses only the specs and sources in our research notes. The genuine N04C is reviewed as the reference pad you are replacing, since no verifiable Amazon listing for it was found.

Best aftermarket alternative: Galfer FD426G1652

Best aftermarket alternative — XTR M9120, XT M8120 and SLX M7120 owners replacing the N04C

Why the Galfer FD426G1652 is our pick

The FD426G1652 is the only aftermarket pad in our research with both a maker catalog behind its fitment and a verifiable Amazon listing. Galfer’s catalogs place the FD426 shape on the BR-M9120, BR-M8120 and BR-M7120 — the calipers the N04C ships on — making it a genuine like-for-like shape replacement. The G1652 e-bike compound suits riders who brake harder and longer.

Galfer FD426G1652 key specs

• Brand: Galfer
• MPN: FD426G1652
• Compound: E-bike (G1652)
• Pad shape: FD426 — Shimano narrow 4-piston
• Fits (Galfer catalog): BR-M9120 (4-piston), BR-M8120, BR-M7120
• Catalog sources: Galfer bike catalogs 2023 and 2024, 2025 brochure
• Color: Purple (per Amazon listing title)
• Listing status: Amazon listing confirmed live 2026-10-23; no featured offers at fetch time
• Documented use: FD426 shape raced in World Cup downhill (other compounds — see owners)

Galfer FD426G1652: fits and best for

XTR BR-M9120, XT BR-M8120 and SLX BR-M7120 4-piston calipers, per Galfer’s catalogs. Best for e-MTB and heavier riders whose braking loads run past standard pads, and for anyone wanting an aftermarket alternative to the stock N04C in the same narrow 4-piston shape.

Galfer FD426G1652 pros and watch-outs

Galfer FD426G1652: what owners report

• Galfer’s own report notes Commencal and Muc Off downhill teams ran FD426 pads — the G1554T Pro compound in the dry and G1851 Advanced in the wet — in World Cup downhill, which documents the FD426 shape under real race loads, though in different compounds than the G1652. Source
• Retailer staff at mtbiker.shop recommend Galfer FD426 pads (G1554T Pro) as upgrades for Shimano 4-piston brakes in a public Q and A, again for the FD426 shape rather than the G1652 compound specifically. Source

Owner coverage for the G1652 compound specifically is thin; the reports above cover the FD426 shape in other compounds.

Galfer FD426G1652: who should not buy

If your caliper is a 2-piston model or outside the M9120 / M8120 / M7120 family, the FD426 shape is not cataloged for it — the Shimano D03S below is the safer pick.

Galfer FD426G1652: pair it with

Check the rotor before fitting: if it is scored, blued or below minimum thickness, replace it first. (No verified accessory listing was in our research notes, so no button is printed here.)

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Best genuine Shimano alternative: Shimano D03S Resin

Best genuine Shimano alternative — riders who want quieter braking on the same calipers

Why the Shimano D03S is our pick

The D03S is the safe, genuine-Shimano answer to the N04C. Shimano’s own C-192 chart lists the BP-D03S-RX resin pad as an option for the BR-M9120, BR-M8120, BR-M7120 and BR-U8020 — the calipers the metal N04C ships on — so fitment is a maker statement, not a guess. It is a fin-less resin pad, which means quieter braking and simpler hardware at the cost of some outright bite. Retailer listings extend its coverage to the M6120 family as well.

Shimano D03S key specs

• Brand: SHIMANO
• Model: BP-D03S-RX
• Compound: Resin (organic)
• Pad shape: Narrow D-type
• Back plate: Steel
• Radiator fins: None
• Includes: Spring and split pin
• Item model number: Y1XM98010 (per Amazon listing details)
• Option pad for (Shimano C-192): BR-M9120, BR-M8120, BR-M7120, BR-U8020
• Also listed for: BR-M6120, BR-M8020, BR-M820, BR-M810, BR-M640, BR-MT520, BR-MT420
• Listing status: Amazon page not re-openable at research (bot-block); availability not re-confirmed

Shimano D03S: fits and best for

BR-M9120, BR-M8120, BR-M7120 and BR-U8020 per Shimano’s chart, plus the BR-M6120, BR-MT520 and BR-MT420 family per retailer listings. Best for trail riders who value quiet, modulated braking over maximum bite, and for M6120-family owners whose calipers never took the N04C in the first place. See the brake pads archive for the wider category.

Shimano D03S pros and watch-outs

Shimano D03S: what owners report

• Owner coverage specific to the D03S was thin in our research — no dedicated owner threads were verified — so this section states that plainly rather than borrowing reports about other pads. The strongest evidence remains Shimano’s own compatibility chart and retailer fitment listings.

Shimano D03S: who should not buy

If you ride long, brake-heavy descents where heat management is the whole game, a metal pad suits you better — the Galfer FD426G1652 above is the verified alternative with an e-bike compound.

Shimano D03S: pair it with

The included spring and split pin are new in the box — use them rather than reusing tired hardware, and check the rotor surface before bedding. (No verified accessory listing was found in our research notes, so no button is printed here.)

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Reference: Shimano N04C (BP-N04C-MF)

Reference — the stock pad these alternatives replace; no verified Amazon listing

Why the Shimano N04C is the reference

The BP-N04C-MF is what this guide is measured against: a narrow N-type metal pad with radiator fins, and the stock pad for the XTR BR-M9120, XT BR-M8120, SLX BR-M7120 and BR-U8020 4-piston calipers. It is an MTB 4-piston pad — not a road pad, despite what the part number might suggest. It is covered here as the reference because our research found no verifiable Amazon listing for the genuine pad.

Shimano N04C key specs

• Brand: SHIMANO
• Model: BP-N04C-MF
• Pad shape: Narrow N-type
• Compound: Metal
• Radiator fins: Yes
• Standard pad for: BR-M9120 (XTR), BR-M8120 (XT), BR-M7120 (SLX), BR-U8020
• Option pad for: BR-M9220, BR-M8220
• Not standard for: BR-M6120, BR-MT520, BR-MT420 (ship with D-type)
• Amazon listing: none found in our research

Shimano N04C: fits and best for

As the stock pad, it fits the calipers it ships on: BR-M9120, BR-M8120, BR-M7120 and BR-U8020, with option fitment on BR-M9220 and BR-M8220. This section exists so you can compare any alternative against the real stock specification — compound, fins and caliper list — rather than against a vague memory of it.

Shimano N04C pros and watch-outs

Shimano N04C: what owners report

• As the stock pad, the N04C is what riders compare everything against. The mtbr thread below documents finned-pad fitment across Shimano 4-piston calipers, including which finned pads seat where. Source

Shimano N04C: who should not buy

If you want to buy the genuine pad online today, skip the hunt — no Amazon listing was verified in our research, and marketplace listings without part-number backing deserve skepticism. The verified move is the closest alternative: the Galfer FD426G1652 above, with the same narrow 4-piston shape and catalog-verified fitment.

Shimano N04C: pair it with

There is no buy button for the reference pad because no listing was verified. The written alternative, with its affiliate link directly below, is the Galfer FD426G1652 — the closest verified stand-in for the N04C’s shape and fitment.

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Spec comparison

Every row below is the same attribute for each pad, so the comparison is like-for-like. Fuller per-pad detail sits in the wi-specs lists inside each review above.

No scores are printed because this guide is based on maker documents and owner reports, not instrumented testing, so no rubric is claimed.

Fitment and installation basics

Start with the caliper model stamped on the caliper body. BR-M9120, BR-M8120, BR-M7120 and BR-U8020 are the N-family calipers the N04C ships on, and both alternatives in this guide are verified for them — the Galfer by catalog, the D03S by Shimano’s own chart. BR-M6120, BR-MT520 and BR-MT420 ship with D-type pads, so the D03S is the verified pick there and the FD426 shape should not be assumed to fit.

With the wheel out, note how the old spring and split pin sit before removing them; the D03S ships with new ones, so use the fresh hardware rather than reusing tired steel. Push the pistons back squarely and evenly, seat the pads with their hardware, and confirm they slide freely before the wheel goes back on. Never force a pad that does not seat — a wrong-shape pad is a fitment error, not a tight fit.

Torque caliper bolts to the bike maker figure, bed the pads exactly as the maker directs on a quiet stretch, and check brake feel at walking speed before the first descent. Supporting context for the rest of the system sits in the brake pads archive and the wider brakes, suspension and steering catalogue.

Safety essentials

Three safety-first follow-ons for a pad swap. No verified Amazon listings for these accessories were found in our research notes, so they are named without buttons — buy them from a bike shop you trust:

Isopropyl alcohol and lint-free rags, for cleaning rotors and calipers without contaminating the new pads.

A replacement rotor, if yours is scored, blued or below the maker minimum thickness — no pad fixes a worn rotor.

A torque wrench, so caliper bolts land on the bike maker figure instead of a guess.

Further brake-system context: the brake pads archive and the brakes, suspension and steering catalogue.

Troubleshooting

Who should NOT buy these

Two-piston caliper owners: the N04C family is a 4-piston shape. If your caliper is a 2-piston model such as the MT200 class, none of these pads will seat — start from the brake pads archive with your caliper model instead.

Road and gravel riders: the N04C is an MTB 4-piston pad, not a road pad, despite what the part number might suggest. Road calipers take entirely different pads, so this guide is the wrong aisle.

Buyers who must have the genuine finned N04C today: no Amazon listing was verified in our research, and unverified marketplace listings deserve skepticism. The Galfer FD426G1652 above is the closest verified alternative.

Silence-first riders on a budget of patience: skip metal compounds entirely and go straight to the resin D03S — quieter braking is what resin is for, and the D03S is Shimano’s own.

Final verdict

Best aftermarket alternative — Galfer FD426G1652: Check its price

Best genuine Shimano alternative — Shimano D03S: Check its price

Reference — Shimano N04C: no verified listing; browse the brake pads archive for the category instead

FAQ

What is the Shimano N04C brake pad?

The BP-N04C-MF is Shimano’s narrow N-type metal disc-brake pad with radiator fins, and it is the stock pad for the XTR BR-M9120, XT BR-M8120, SLX BR-M7120 and BR-U8020 4-piston mountain bike calipers. It is a metal compound, not resin, and it is an MTB 4-piston pad — not a road pad, despite what the part number might suggest. This guide covers verified alternatives because the genuine pad had no verifiable Amazon listing in our research.

Which calipers does the Shimano N04C fit?

Per Shimano’s official C-192 compatibility chart, the N04C is the standard pad for BR-M9120 (XTR), BR-M8120 (XT), BR-M7120 (SLX) and BR-U8020 calipers, and an option pad for BR-M9220 and BR-M8220. It is not the standard pad for BR-M6120, BR-MT520 or BR-MT420, which ship with D-type pads. Both alternatives in this guide are verified against the same chart, so match your caliper model number to it before ordering.

Is the N04C a metal or resin pad?

Metal. Shimano’s chart lists the BP-N04C-MF as a narrow N-type pad in a metal compound with radiator fins. The resin option in the same narrow family is a different part, and the Shimano D03S covered below is a narrow D-type resin pad — a different shape as well as a different compound. Do not treat metal and resin as interchangeable on heat management: metal tolerates sustained descents better, while resin runs quieter.

What is the best alternative to the Shimano N04C?

The Galfer FD426G1652 is the closest verified alternative: its FD426 shape is made for Shimano narrow 4-piston calipers, and Galfer’s catalogs list it for the BR-M9120, BR-M8120 and BR-M7120 — the same calipers the N04C ships on. It uses Galfer’s G1652 e-bike compound rather than a plain metal formula. If you prefer a genuine Shimano pad and quieter braking, the Shimano D03S resin pad is the verified second alternative.

Will the Shimano D03S fit my XT M8120 caliper?

Yes. Shimano’s C-192 chart lists the BP-D03S-RX, a narrow D-type resin pad, as an option pad for the BR-M8120, along with the BR-M9120, BR-M7120 and BR-U8020. Retailer fitment listings also cover the BR-M6120, BR-MT520 and BR-MT420 families. It ships with a spring and split pin, and it is fin-less, so expect quieter braking with less heat shedding than the finned metal N04C.

Can I switch from metal pads to resin pads on the same caliper?

Yes, where the resin pad is charted for your caliper — the D03S is a listed option for the same 4-piston calipers the metal N04C ships on. Expect quieter braking and kinder rotor wear with less outright bite and a lower heat ceiling. Bed the resin pads in properly, since the transfer layer they lay down differs from a metal pad’s, and avoid dragging the brakes on long descents until you know how the new compound behaves.

Do I need finned brake pads?

Fins help on sustained, brake-heavy descents by shedding heat from the pad, which is why the stock N04C carries them. For rolling trail riding without long descents, a well bedded fin-less pad like the D03S performs fine and runs quieter. Our sources do not confirm fins on the Galfer FD426G1652, so buy it for its catalog-verified fitment and e-bike compound, not for assumed cooling features.

Why are there so few N04C alternatives on Amazon?

The narrow 4-piston aftermarket is thin. In our research, Kool-Stop and Clarks had no N-shape pad at all, Jagwire’s 4-piston pad and the SwissStop Disc 27C had no Amazon listing, the current SwissStop EXOTherm2 was under a 2024 recall, and several generic brands had no N-shape listings. That left the Galfer FD426G1652 and the genuine Shimano D03S as the only two fully verified options — this guide lists both rather than padding the list with unverifiable claims.

Where can I buy a genuine Shimano N04C?

Our research found no verifiable Amazon listing for the genuine N04C, so we cannot point you to one with confidence. Your realistic routes are a Shimano dealer or bike shop that can order BP-N04C-MF by part number. Be skeptical of marketplace listings with no catalog or part-number backing. If you need pads now, the two verified alternatives in this guide — Galfer FD426G1652 and Shimano D03S — are the evidence-backed options.

Will the Galfer FD426G1652 fit my Deore M6120 caliper?

Not per our sources. Galfer’s catalogs list the FD426 for the BR-M9120, BR-M8120 and BR-M7120; the BR-M6120 is not among them, and the M6120 family ships with D-type pads rather than the N-type shape the N04C uses. Do not assume fitment beyond the catalog. For the M6120, BR-MT520 and BR-MT420, the Shimano D03S is the verified pick — retailer listings explicitly cover those calipers.

Sources & changelog

• Shimano C-192 pad compatibility chart — N04C and D03S fitment
• Galfer bike catalog 2023 (PDF) — FD426 fitment
• Galfer bike catalog 2024 (PDF) — FD426 fitment
• Galfer bike brochure 2025 (PDF) — FD426 fitment
• Retailer D03S fitment listing — M6120 / MT520 / MT420 coverage
• SwissStop 2020 catalog (PDF) — Disc 27C fitment, dropped for no Amazon listing
• BikeRadar — SwissStop EXOTherm2 recall report, January 2024
• Retailer item list — Jagwire Pro E-Bike 4-piston fitment, dropped for no Amazon listing
• mtbr forum — finned-pad fitment thread for Shimano 4-piston calipers
• Galfer — World Cup downhill teams running FD426 pads
• Retailer Q and A — staff recommending Galfer FD426 for Shimano 4-piston brakes
• Amazon listing evidence — Galfer FD426G1652 (live 2026-10-23)
• Amazon search evidence — Shimano D03S (page not re-openable)

Changelog — October 23, 2026: guide first published.

Related guides

• Best Brake Pads Material — the Brake Pads subcategory pillar
• Brake Pads — the full category archive
• Brakes, Suspension and Steering — the parent category
• About WinchInsider