Rear brake parts for the Trek FX 2 (Gen 4)

We have not verified this bike yet

12 of the 16 measurements are on file; 4 confirmed by two independent sources.

A documented replacement can be recommended even while unrelated bike measurements are missing.

Tektro E10.11 resin disc brake pads with return spring
Brake pads
fits · confidence: verified
Why? The facts we compared (1 dimension compared)
- Brake pad shape, rear caliper (safety-critical): bike Tektro / TRP 2-piston hydraulic & TRP mechanical (E10.11 pad) (verified) · part Tektro / TRP 2-piston hydraulic & TRP mechanical (E10.11 pad) — match
Sources:
- Trek Bicycle Corporation — Trek FX 2 · Canada · product 57139 · component specifications (tier 1)
- Trek — Trek genuine HD-R280 replacement brake set, product 41461 variants 5298554/5298555 (tier 1)
- Tektro — Tektro brake pad compatibility, 10 March 2021, page 1 (tier 1)
- Tektro — Tektro brake pad compatibility, 10 March 2021, page 1 (tier 1, read 2026-10-17)
- Trek — Trek genuine HD-R280 replacement brake set, product 41461 variants 5298554/5298555 (tier 1, read 2026-10-17)
- Tektro official siteModel page. Confirm variant, availability and delivery.
- Search Amazon.caSearch only · exact model and availability unverified.
Elvedes 6854 organic resin brake pads, pair
Brake pads
unknown · confidence: verified
- Brake pad shape, rear caliper : Documented alternatives: Shimano MT200 or Tektro M275 — replacement must cover bothCheck your installed setup or its technical sheet.
Why? The facts we compared (1 dimension compared)
- Brake pad shape, rear caliper (safety-critical): bike nothing on file (verified) · part Documented alternatives: Shimano MT200 or Tektro M275 — replacement must cover both — not on file
Downgraded to "unknown": identify the fitted brake caliper: this pad is not documented for every factory alternative
Sources:
- Trek Bicycle Corporation — Trek FX 2 · Canada · product 57139 · component specifications (tier 1)
- Trek — Trek genuine HD-R280 replacement brake set, product 41461 variants 5298554/5298555 (tier 1)
- Tektro — Tektro brake pad compatibility, 10 March 2021, page 1 (tier 1)
- Shimano — BR-MT200 exploded view 4349E, June 2025 — replacement pad kit (tier 1, read 2026-10-17)
- Elvedes — Elvedes 6854 soft organic resin, one pair — explicit BR-MT200 and HD-M275 approval (tier 1, read 2026-10-18)
- Tektro — Tektro pad compatibility table, 10 March 2021 — HD-M275/HD-M276 row (tier 1, read 2026-10-18)
View specifications
Gorilla Brakes Enduro Pro Resin pads · N30-GB-EPU-TEKTRO-RES
Brake pads
unknown · confidence: verified
- Brake pad shape, rear caliper : Tektro Mira OEM flat-mount description — exact documented replacement application onlyCheck your installed setup or its technical sheet.
Why? The facts we compared (1 dimension compared)
- Brake pad shape, rear caliper (safety-critical): bike nothing on file (verified) · part Tektro Mira OEM flat-mount description — exact documented replacement application only — not on file
Downgraded to "unknown": identify the fitted brake caliper: this pad is not documented for every factory alternative
Sources:
- Trek Bicycle Corporation — Trek FX 2 · Canada · product 57139 · component specifications (tier 1)
- Trek — Trek genuine HD-R280 replacement brake set, product 41461 variants 5298554/5298555 (tier 1)
- Tektro — Tektro brake pad compatibility, 10 March 2021, page 1 (tier 1)
- Specialized — Diverge E5 Shimano Claris · Canadian product 4223493 / displayed ID 223493 (tier 1, read 2026-10-18)
- Tektro — Tektro CY2026 catalogue — MD-C550 and MD-C400, PDF page 33 (tier 1, read 2026-10-18)
- Gorilla Brakes — Gorilla application GB-BIKE-004278: 2025 Diverge E5 Claris, front/rear (tier 2, read 2026-10-18)
- Gorilla Brakes — Exact Gorilla Enduro Pro Resin pad application and package (tier 2, read 2026-10-18)
- Gorilla Brakes — Gorilla public product JSON: N30-GB-EPU-TEKTRO-RES / GTIN 5061085002322 (tier 2, read 2026-10-18)
- Gorilla Brakes — Gorilla Tektro 2-piston collection — Enduro Pro Resin product membership (tier 1, read 2026-10-18)
View specifications
SRAM CenterLine X rotor 160 mm, 6-bolt
Brake rotor
unknown · confidence: single-source
- Rotor interface, rear hub : 6-bolt (ISO)Match requires corroboration from an independent technical source.
- Maximum rotor, rear : ≥ 160 mmMatch requires corroboration from an independent technical source.
Why? The facts we compared (2 dimensions compared)
- Rotor interface, rear hub (safety-critical): bike 6-bolt (ISO) (verified) · part 6-bolt (ISO) — match
- Maximum rotor, rear (safety-critical): bike 160 mm (single-source) · part ≥ 160 mm — match
Downgraded to "unknown": every fact matches, but a safety-critical one is confirmed by a single source only — we say "fits" on a safety dimension only with two independent sources
Sources:
- Trek Bicycle Corporation — Trek FX 2 · Canada · product 57139 · component specifications (tier 1)
- Formula — Formula MTB hub table — DC20 front / DC22 rear (tier 1)
- SRAM — CenterLine X Rotor — RT-CLN-X-A2 (tier 1, read 2026-08-21)
- Trek Bicycle Corporation — Trek FX 2 · Canada · product 57139 · product/size data (tier 1)
View specifications
SRAM G2 RS disc brake (caliper + lever)
Brake caliper
Fit checks required · confidence: single-source Compatibility is not confirmed. Verify the listed mounting requirements before buying or installing this part.
- Brake mount, rear : Post mount (74 mm)Check your installed setup or its technical sheet.
- Brake actuation, rear : Hydraulic discMatch requires corroboration from an independent technical source.
Why? The facts we compared (2 dimensions compared)
- Brake mount, rear (safety-critical): bike nothing on file · part Post mount (74 mm) — not on file
- Brake actuation, rear (safety-critical): bike Hydraulic disc (single-source) · part Hydraulic disc — match
Sources:
- SRAM — G2 RS disc brake — DB-G2-RS-A2 (service specifications) (tier 1, read 2026-08-21)
- Trek Bicycle Corporation — Trek FX 2 · Canada · product 57139 · component specifications (tier 1)
View specifications
TRP Spyre mechanical disc caliper, post mount
Brake caliper
Fit checks required · confidence: single-source Compatibility is not confirmed. Verify the listed mounting requirements before buying or installing this part.
- Brake mount, rear : Post mount (74 mm)Check your installed setup or its technical sheet.
- Brake actuation, rear : Mechanical (cable) discDoes not match the documented build.
Why? The facts we compared (2 dimensions compared)
- Brake mount, rear (safety-critical): bike nothing on file · part Post mount (74 mm) — not on file
- Brake actuation, rear (safety-critical): bike Hydraulic disc (single-source) · part Mechanical (cable) disc — mismatch
Sources:
- TRP Cycling — Spyre — mechanical disc brake caliper (tier 1, read 2026-08-21)
- Trek Bicycle Corporation — Trek FX 2 · Canada · product 57139 · component specifications (tier 1)
View specifications
Magura 9.P Performance brake pads — genuine 2701627
Brake pads
does not fit · confidence: verified
- Brake pad shape, rear caliper : Magura MT 4-piston (MT5 / MT7 / MT Trail front; 8.P / 9.P) or Magura MT C ABS, 4-piston — Performance pads onlyDoes not match the documented build.
Why? The facts we compared (1 dimension compared)
- Brake pad shape, rear caliper (safety-critical): bike Tektro / TRP 2-piston hydraulic & TRP mechanical (E10.11 pad) (verified) · part Magura MT 4-piston (MT5 / MT7 / MT Trail front; 8.P / 9.P) or Magura MT C ABS, 4-piston — Performance pads only — mismatch
Sources:
- Trek Bicycle Corporation — Trek FX 2 · Canada · product 57139 · component specifications (tier 1)
- Trek — Trek genuine HD-R280 replacement brake set, product 41461 variants 5298554/5298555 (tier 1)
- Tektro — Tektro brake pad compatibility, 10 March 2021, page 1 (tier 1)
- Magura — 2023 original spare parts catalogue p48 — 9.P Performance (tier 1, read 2026-10-18)
- Magura — MT C / MT C ABS multilingual instructions, English panel (tier 1, read 2026-10-18)
- TÜV SÜD Auto Service GmbH / KBA — TÜV report18-00005-CM-GBM-01 and KBA approval02A0565/0004,2021;9.P2/2701627 (tier 2, read 2026-10-18)
View specifications
Shimano B05S-RX resin brake pads, pair with spring and split pins
Brake pads
does not fit · confidence: verified
- Brake pad shape, rear caliper : Shimano B-type (Deore/Alivio/Acera/Altus/MT: B01S/B03S/B05S)Does not match the documented build.
Why? The facts we compared (1 dimension compared)
- Brake pad shape, rear caliper (safety-critical): bike Tektro / TRP 2-piston hydraulic & TRP mechanical (E10.11 pad) (verified) · part Shimano B-type (Deore/Alivio/Acera/Altus/MT: B01S/B03S/B05S) — mismatch
Sources:
- Trek Bicycle Corporation — Trek FX 2 · Canada · product 57139 · component specifications (tier 1)
- Trek — Trek genuine HD-R280 replacement brake set, product 41461 variants 5298554/5298555 (tier 1)
- Tektro — Tektro brake pad compatibility, 10 March 2021, page 1 (tier 1)
- Shimano — BR-MT200 exploded view 4349E, June 2025 — replacement pad kit (tier 1, read 2026-10-17)
- SwissStop — Disc 15 C — independently designed pad-family cross-reference (tier 2, read 2026-10-17)
View specifications
Shimano K-Type resin disc brake pads
Brake pads
does not fit · confidence: inferred
- Brake pad shape, rear caliper : Shimano K-type (2019+ 2-piston XTR/XT/SLX/Deore: K02S/K03S/K04Ti/K05S) or Shimano L-type (flat-mount road/gravel 2-piston: L02A/L03A/L04C/L05A)Does not match the documented build.
Why? The facts we compared (1 dimension compared)
- Brake pad shape, rear caliper (safety-critical): bike Tektro / TRP 2-piston hydraulic & TRP mechanical (E10.11 pad) (verified) · part Shimano K-type (2019+ 2-piston XTR/XT/SLX/Deore: K02S/K03S/K04Ti/K05S) or Shimano L-type (flat-mount road/gravel 2-piston: L02A/L03A/L04C/L05A) — mismatch
Sources:
- Trek Bicycle Corporation — Trek FX 2 · Canada · product 57139 · component specifications (tier 1)
- Trek — Trek genuine HD-R280 replacement brake set, product 41461 variants 5298554/5298555 (tier 1)
- Tektro — Tektro brake pad compatibility, 10 March 2021, page 1 (tier 1)
- MEC — Shimano K-Type Resin Disc Brake Pads — MEC listing (tier 2, read 2026-08-21)
View specifications
Shimano L-Type metallic disc brake pads (finned)
Brake pads
does not fit · confidence: inferred
- Brake pad shape, rear caliper : Shimano L-type (flat-mount road/gravel 2-piston: L02A/L03A/L04C/L05A) or Shimano K-type (2019+ 2-piston XTR/XT/SLX/Deore: K02S/K03S/K04Ti/K05S)Does not match the documented build.
Why? The facts we compared (1 dimension compared)
- Brake pad shape, rear caliper (safety-critical): bike Tektro / TRP 2-piston hydraulic & TRP mechanical (E10.11 pad) (verified) · part Shimano L-type (flat-mount road/gravel 2-piston: L02A/L03A/L04C/L05A) or Shimano K-type (2019+ 2-piston XTR/XT/SLX/Deore: K02S/K03S/K04Ti/K05S) — mismatch
Sources:
- Trek Bicycle Corporation — Trek FX 2 · Canada · product 57139 · component specifications (tier 1)
- Trek — Trek genuine HD-R280 replacement brake set, product 41461 variants 5298554/5298555 (tier 1)
- Tektro — Tektro brake pad compatibility, 10 March 2021, page 1 (tier 1)
- MEC — Shimano L-Type Metallic Disc Brake Pads — MEC listing (tier 2, read 2026-08-21)
View specifications
Shimano M70T4 V-brake pads
Brake pads
does not fit · confidence: inferred
- Brake pad shape, rear caliper : Rim pads: V-brake / linear-pull threaded stud (M70T4 / S70C, 70 mm)Does not match the documented build.
Why? The facts we compared (1 dimension compared)
- Brake pad shape, rear caliper (safety-critical): bike Tektro / TRP 2-piston hydraulic & TRP mechanical (E10.11 pad) (verified) · part Rim pads: V-brake / linear-pull threaded stud (M70T4 / S70C, 70 mm) — mismatch
Sources:
- Trek Bicycle Corporation — Trek FX 2 · Canada · product 57139 · component specifications (tier 1)
- Trek — Trek genuine HD-R280 replacement brake set, product 41461 variants 5298554/5298555 (tier 1)
- Tektro — Tektro brake pad compatibility, 10 March 2021, page 1 (tier 1)
- MEC — Shimano M70T4 V-Brake Rim Brake Pads — MEC listing (tier 2, read 2026-08-21)
View specifications
SRAM CenterLine rotor 180 mm, Center Lock
Brake rotor
does not fit · confidence: single-source
- Rotor interface, rear hub : Center LockDoes not match the documented build.
- Maximum rotor, rear : ≥ 180 mmDoes not match the documented build.
Why? The facts we compared (2 dimensions compared)
- Rotor interface, rear hub (safety-critical): bike 6-bolt (ISO) (verified) · part Center Lock — mismatch
- Maximum rotor, rear (safety-critical): bike 160 mm (single-source) · part ≥ 180 mm — mismatch
Sources:
- Trek Bicycle Corporation — Trek FX 2 · Canada · product 57139 · component specifications (tier 1)
- Formula — Formula MTB hub table — DC20 front / DC22 rear (tier 1)
- SRAM — CenterLine Rotor — RT-CLN-A2 (tier 1, read 2026-08-21)
- Trek Bicycle Corporation — Trek FX 2 · Canada · product 57139 · product/size data (tier 1)
View specifications
SRAM CenterLine rotor 200 mm, 6-bolt
Brake rotor
does not fit · confidence: single-source
- Rotor interface, rear hub : 6-bolt (ISO)Match requires corroboration from an independent technical source.
- Maximum rotor, rear : ≥ 200 mmDoes not match the documented build.
Why? The facts we compared (2 dimensions compared)
- Rotor interface, rear hub (safety-critical): bike 6-bolt (ISO) (verified) · part 6-bolt (ISO) — match
- Maximum rotor, rear (safety-critical): bike 160 mm (single-source) · part ≥ 200 mm — mismatch
Sources:
- Trek Bicycle Corporation — Trek FX 2 · Canada · product 57139 · component specifications (tier 1)
- Formula — Formula MTB hub table — DC20 front / DC22 rear (tier 1)
- SRAM — CenterLine Rotor — RT-CLN-A2 (tier 1, read 2026-08-21)
- Trek Bicycle Corporation — Trek FX 2 · Canada · product 57139 · product/size data (tier 1)
View specifications
SRAM CenterLine rotor 220 mm, 6-bolt
Brake rotor
does not fit · confidence: single-source
- Rotor interface, rear hub : 6-bolt (ISO)Match requires corroboration from an independent technical source.
- Maximum rotor, rear : ≥ 220 mmDoes not match the documented build.
Why? The facts we compared (2 dimensions compared)
- Rotor interface, rear hub (safety-critical): bike 6-bolt (ISO) (verified) · part 6-bolt (ISO) — match
- Maximum rotor, rear (safety-critical): bike 160 mm (single-source) · part ≥ 220 mm — mismatch
Sources:
- Trek Bicycle Corporation — Trek FX 2 · Canada · product 57139 · component specifications (tier 1)
- Formula — Formula MTB hub table — DC20 front / DC22 rear (tier 1)
- SRAM — CenterLine Rotor — RT-CLN-A2 (tier 1, read 2026-08-21)
- Trek Bicycle Corporation — Trek FX 2 · Canada · product 57139 · product/size data (tier 1)
View specifications
SRAM CenterLine X rotor 140 mm, Center Lock
Brake rotor
does not fit · confidence: single-source
- Rotor interface, rear hub : Center LockDoes not match the documented build.
- Maximum rotor, rear : ≥ 140 mmMatch requires corroboration from an independent technical source.
Why? The facts we compared (2 dimensions compared)
- Rotor interface, rear hub (safety-critical): bike 6-bolt (ISO) (verified) · part Center Lock — mismatch
- Maximum rotor, rear (safety-critical): bike 160 mm (single-source) · part ≥ 140 mm — match
Sources:
- Trek Bicycle Corporation — Trek FX 2 · Canada · product 57139 · component specifications (tier 1)
- Formula — Formula MTB hub table — DC20 front / DC22 rear (tier 1)
- SRAM — CenterLine X Rotor — RT-CLN-X-A2 (tier 1, read 2026-08-21)
- Trek Bicycle Corporation — Trek FX 2 · Canada · product 57139 · product/size data (tier 1)
View specifications
SRAM CenterLine X rotor 160 mm, Center Lock
Brake rotor
does not fit · confidence: single-source
- Rotor interface, rear hub : Center LockDoes not match the documented build.
- Maximum rotor, rear : ≥ 160 mmMatch requires corroboration from an independent technical source.
Why? The facts we compared (2 dimensions compared)
- Rotor interface, rear hub (safety-critical): bike 6-bolt (ISO) (verified) · part Center Lock — mismatch
- Maximum rotor, rear (safety-critical): bike 160 mm (single-source) · part ≥ 160 mm — match
Sources:
- Trek Bicycle Corporation — Trek FX 2 · Canada · product 57139 · component specifications (tier 1)
- Formula — Formula MTB hub table — DC20 front / DC22 rear (tier 1)
- SRAM — CenterLine X Rotor — RT-CLN-X-A2 (tier 1, read 2026-08-21)
- Trek Bicycle Corporation — Trek FX 2 · Canada · product 57139 · product/size data (tier 1)
View specifications
SRAM CenterLine X rotor 180 mm, 6-bolt
Brake rotor
does not fit · confidence: single-source
- Rotor interface, rear hub : 6-bolt (ISO)Match requires corroboration from an independent technical source.
- Maximum rotor, rear : ≥ 180 mmDoes not match the documented build.
Why? The facts we compared (2 dimensions compared)
- Rotor interface, rear hub (safety-critical): bike 6-bolt (ISO) (verified) · part 6-bolt (ISO) — match
- Maximum rotor, rear (safety-critical): bike 160 mm (single-source) · part ≥ 180 mm — mismatch
Sources:
- Trek Bicycle Corporation — Trek FX 2 · Canada · product 57139 · component specifications (tier 1)
- Formula — Formula MTB hub table — DC20 front / DC22 rear (tier 1)
- SRAM — CenterLine X Rotor — RT-CLN-X-A2 (tier 1, read 2026-08-21)
- Trek Bicycle Corporation — Trek FX 2 · Canada · product 57139 · product/size data (tier 1)
View specifications

Slots in this region

Brake caliper
Brake rotor
Brake pads

The rear brake of the Trek FX 2 (Gen 4): 3 slots — Brake caliper, Brake rotor and Brake pads. 4 fit facts on file for this region. The parts menu below lists every catalogued part that belongs here with its computed verdict — fits, fits with adapter, does not fit or unknown — and why.

Maximum rotor, rear	160 mm (single-source)
Rotor interface, rear hub	6-bolt (ISO) (verified)
Brake actuation, rear	Hydraulic disc (single-source)
Brake pad shape, rear caliper	Tektro / TRP 2-piston hydraulic & TRP mechanical (E10.11 pad) (verified)

What does "unknown" mean on this page?: That we do not have, on file, the bike measurement this part needs. It is not a quiet "yes": until the measurement is on file, we do not sell the part for this bike.

Sources

Trek Bicycle Corporation — Trek FX 2 · Canada · product 57139 · component specifications (tier 1, read 2026-10-17)
Trek Bicycle Corporation — Trek FX 2 · Canada · product 57139 · product/size data (tier 1, read 2026-10-17)
Formula — Formula MTB hub table — DC20 front / DC22 rear (tier 1, read 2026-10-17)
Tektro — Tektro brake pad compatibility, 10 March 2021, page 1 (tier 1, read 2026-10-17)
Trek — Trek genuine HD-R280 replacement brake set, product 41461 variants 5298554/5298555 (tier 1, read 2026-10-17)
Trek Bicycle Corporation — Trek FX 2 · Canada · product 57139 · component specifications (tier 1, read 2026-10-18)
Trek Bicycle Corporation — Trek FX 2 · Canada · product 57139 · component specifications (tier 1, read 2026-10-18)

Parts menu — 17 parts

Slots in this region

Sources