Rear brake parts for the woom GO 4

We have not verified this bike yet

7 of the 14 measurements are on file; 0 confirmed by two independent sources. Without enough evidence, fit stays “unknown.”

Only universal parts (lube, tools, bar tape) are offered for this bike until verification.

woom GO 4

The rear brake of the woom GO 4: 3 slots — Brake caliper, Brake rotor and Brake pads. 1 fit fact 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.

Brake mount, rear	Cantilever / V-brake posts (single-source)

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.

Slots in this region

Brake caliper
Brake rotor
Brake pads

Shimano K-Type resin disc brake pads
Brake pads
unknown — safety-critical · confidence: single-source We can't answer this yet, and this is one where a guess could hurt you.
Why? The facts we compared (1 dimension compared)
- Brake pad shape, rear caliper (safety-critical): bike nothing on file · 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) — not on file
Sources:
- 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
unknown — safety-critical · confidence: single-source We can't answer this yet, and this is one where a guess could hurt you.
Why? The facts we compared (1 dimension compared)
- Brake pad shape, rear caliper (safety-critical): bike nothing on file · 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) — not on file
Sources:
- 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
unknown — safety-critical · confidence: single-source We can't answer this yet, and this is one where a guess could hurt you.
Why? The facts we compared (1 dimension compared)
- Brake pad shape, rear caliper (safety-critical): bike nothing on file · part Rim pads: V-brake / linear-pull threaded stud (M70T4 / S70C, 70 mm) — not on file
Sources:
- 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
unknown — safety-critical · confidence: single-source We can't answer this yet, and this is one where a guess could hurt you.
Why? The facts we compared (2 dimensions compared)
- Rotor interface, rear hub (safety-critical): bike nothing on file · part Center Lock — not on file
- Maximum rotor, rear (safety-critical): bike nothing on file · part ≥ 180 mm — not on file
Sources:
- SRAM — CenterLine Rotor — RT-CLN-A2 (tier 1, read 2026-08-21)
View specifications
SRAM CenterLine rotor 200 mm, 6-bolt
Brake rotor
unknown — safety-critical · confidence: single-source We can't answer this yet, and this is one where a guess could hurt you.
Why? The facts we compared (2 dimensions compared)
- Rotor interface, rear hub (safety-critical): bike nothing on file · part 6-bolt (ISO) — not on file
- Maximum rotor, rear (safety-critical): bike nothing on file · part ≥ 200 mm — not on file
Sources:
- SRAM — CenterLine Rotor — RT-CLN-A2 (tier 1, read 2026-08-21)
View specifications
SRAM CenterLine rotor 220 mm, 6-bolt
Brake rotor
unknown — safety-critical · confidence: single-source We can't answer this yet, and this is one where a guess could hurt you.
Why? The facts we compared (2 dimensions compared)
- Rotor interface, rear hub (safety-critical): bike nothing on file · part 6-bolt (ISO) — not on file
- Maximum rotor, rear (safety-critical): bike nothing on file · part ≥ 220 mm — not on file
Sources:
- SRAM — CenterLine Rotor — RT-CLN-A2 (tier 1, read 2026-08-21)
View specifications
SRAM CenterLine X rotor 140 mm, Center Lock
Brake rotor
unknown — safety-critical · confidence: single-source We can't answer this yet, and this is one where a guess could hurt you.
Why? The facts we compared (2 dimensions compared)
- Rotor interface, rear hub (safety-critical): bike nothing on file · part Center Lock — not on file
- Maximum rotor, rear (safety-critical): bike nothing on file · part ≥ 140 mm — not on file
Sources:
- SRAM — CenterLine X Rotor — RT-CLN-X-A2 (tier 1, read 2026-08-21)
View specifications
SRAM CenterLine X rotor 160 mm, 6-bolt
Brake rotor
unknown — safety-critical · confidence: single-source We can't answer this yet, and this is one where a guess could hurt you.
Why? The facts we compared (2 dimensions compared)
- Rotor interface, rear hub (safety-critical): bike nothing on file · part 6-bolt (ISO) — not on file
- Maximum rotor, rear (safety-critical): bike nothing on file · part ≥ 160 mm — not on file
Sources:
- SRAM — CenterLine X Rotor — RT-CLN-X-A2 (tier 1, read 2026-08-21)
View specifications
SRAM CenterLine X rotor 160 mm, Center Lock
Brake rotor
unknown — safety-critical · confidence: single-source We can't answer this yet, and this is one where a guess could hurt you.
Why? The facts we compared (2 dimensions compared)
- Rotor interface, rear hub (safety-critical): bike nothing on file · part Center Lock — not on file
- Maximum rotor, rear (safety-critical): bike nothing on file · part ≥ 160 mm — not on file
Sources:
- SRAM — CenterLine X Rotor — RT-CLN-X-A2 (tier 1, read 2026-08-21)
View specifications
SRAM CenterLine X rotor 180 mm, 6-bolt
Brake rotor
unknown — safety-critical · confidence: single-source We can't answer this yet, and this is one where a guess could hurt you.
Why? The facts we compared (2 dimensions compared)
- Rotor interface, rear hub (safety-critical): bike nothing on file · part 6-bolt (ISO) — not on file
- Maximum rotor, rear (safety-critical): bike nothing on file · part ≥ 180 mm — not on file
Sources:
- SRAM — CenterLine X Rotor — RT-CLN-X-A2 (tier 1, read 2026-08-21)
View specifications
SRAM G2 RS disc brake (caliper + lever)
Brake caliper
unknown — safety-critical · confidence: single-source We can't answer this yet, and this is one where a guess could hurt you.
Why? The facts we compared (2 dimensions compared)
- Brake mount, rear (safety-critical): bike Cantilever / V-brake posts (single-source) · part Post mount (74 mm) — mismatch
- Brake actuation, rear (safety-critical): bike nothing on file · part Hydraulic disc — not on file
Sources:
- woom — woom GO 4 — technical specifications (tier 1, read 2026-08-21)
- SRAM — G2 RS disc brake — DB-G2-RS-A2 (service specifications) (tier 1, read 2026-08-21)
View specifications
TRP Spyre mechanical disc caliper, post mount
Brake caliper
unknown — safety-critical · confidence: single-source We can't answer this yet, and this is one where a guess could hurt you.
Why? The facts we compared (2 dimensions compared)
- Brake mount, rear (safety-critical): bike Cantilever / V-brake posts (single-source) · part Post mount (74 mm) — mismatch
- Brake actuation, rear (safety-critical): bike nothing on file · part Mechanical (cable) disc — not on file
Sources:
- woom — woom GO 4 — technical specifications (tier 1, read 2026-08-21)
- TRP Cycling — Spyre — mechanical disc brake caliper (tier 1, read 2026-08-21)
View specifications

Sources

woom — woom GO 4 — technical specifications (tier 1, read 2026-08-21)

Slots in this region

Parts menu — 12 parts

Sources