Front brake parts for the Giant XTC Jr 24 (2015)

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.

Giant XTC Jr 24 (2015)

The front brake of the Giant XTC Jr 24 (2015): 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.

Brake mount, front	Cantilever / V-brake posts (single-source)
Rotor interface (hubs)	No rotor interface (rim brake) (single-source)
Brake actuation	Cable rim brake (single-source)
Brake pad shape (fitted calipers)	Rim pads: V-brake / linear-pull threaded stud (M70T4 / S70C, 70 mm) (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 M70T4 V-brake pads
Brake pads
unknown · confidence: single-source
Why? The facts we compared (1 dimension compared)
- Brake pad shape (fitted calipers) (safety-critical): bike Rim pads: V-brake / linear-pull threaded stud (M70T4 / S70C, 70 mm) (single-source) · part Rim pads: V-brake / linear-pull threaded stud (M70T4 / S70C, 70 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:
- Giant Bicycles — XTC Jr 24 (2015) — specifications (tier 1, read 2026-08-21)
- 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 (hubs) (safety-critical): bike No rotor interface (rim brake) (single-source) · part Center Lock — mismatch
- Maximum rotor, front (safety-critical): bike nothing on file · part ≥ 180 mm — not on file
Sources:
- Giant Bicycles — XTC Jr 24 (2015) — specifications (tier 1, read 2026-08-21)
- 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 (hubs) (safety-critical): bike No rotor interface (rim brake) (single-source) · part 6-bolt (ISO) — mismatch
- Maximum rotor, front (safety-critical): bike nothing on file · part ≥ 200 mm — not on file
Sources:
- Giant Bicycles — XTC Jr 24 (2015) — specifications (tier 1, read 2026-08-21)
- 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 (hubs) (safety-critical): bike No rotor interface (rim brake) (single-source) · part 6-bolt (ISO) — mismatch
- Maximum rotor, front (safety-critical): bike nothing on file · part ≥ 220 mm — not on file
Sources:
- Giant Bicycles — XTC Jr 24 (2015) — specifications (tier 1, read 2026-08-21)
- 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 (hubs) (safety-critical): bike No rotor interface (rim brake) (single-source) · part Center Lock — mismatch
- Maximum rotor, front (safety-critical): bike nothing on file · part ≥ 140 mm — not on file
Sources:
- Giant Bicycles — XTC Jr 24 (2015) — specifications (tier 1, read 2026-08-21)
- 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 (hubs) (safety-critical): bike No rotor interface (rim brake) (single-source) · part 6-bolt (ISO) — mismatch
- Maximum rotor, front (safety-critical): bike nothing on file · part ≥ 160 mm — not on file
Sources:
- Giant Bicycles — XTC Jr 24 (2015) — specifications (tier 1, read 2026-08-21)
- 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 (hubs) (safety-critical): bike No rotor interface (rim brake) (single-source) · part Center Lock — mismatch
- Maximum rotor, front (safety-critical): bike nothing on file · part ≥ 160 mm — not on file
Sources:
- Giant Bicycles — XTC Jr 24 (2015) — specifications (tier 1, read 2026-08-21)
- 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 (hubs) (safety-critical): bike No rotor interface (rim brake) (single-source) · part 6-bolt (ISO) — mismatch
- Maximum rotor, front (safety-critical): bike nothing on file · part ≥ 180 mm — not on file
Sources:
- Giant Bicycles — XTC Jr 24 (2015) — specifications (tier 1, read 2026-08-21)
- SRAM — CenterLine X Rotor — RT-CLN-X-A2 (tier 1, read 2026-08-21)
View specifications
Shimano K-Type resin disc brake pads
Brake pads
does not fit · confidence: single-source
Why? The facts we compared (1 dimension compared)
- Brake pad shape (fitted calipers) (safety-critical): bike Rim pads: V-brake / linear-pull threaded stud (M70T4 / S70C, 70 mm) (single-source) · 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:
- Giant Bicycles — XTC Jr 24 (2015) — specifications (tier 1, read 2026-08-21)
- 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: single-source
Why? The facts we compared (1 dimension compared)
- Brake pad shape (fitted calipers) (safety-critical): bike Rim pads: V-brake / linear-pull threaded stud (M70T4 / S70C, 70 mm) (single-source) · 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:
- Giant Bicycles — XTC Jr 24 (2015) — specifications (tier 1, read 2026-08-21)
- MEC — Shimano L-Type Metallic Disc Brake Pads — MEC listing (tier 2, read 2026-08-21)
View specifications
SRAM G2 RS disc brake (caliper + lever)
Brake caliper
does not fit · confidence: single-source
Why? The facts we compared (2 dimensions compared)
- Brake mount, front (safety-critical): bike Cantilever / V-brake posts (single-source) · part Post mount (74 mm) — mismatch
- Brake actuation (safety-critical): bike Cable rim brake (single-source) · part Hydraulic disc — mismatch
Sources:
- Giant Bicycles — XTC Jr 24 (2015) — 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
does not fit · confidence: single-source
Why? The facts we compared (2 dimensions compared)
- Brake mount, front (safety-critical): bike Cantilever / V-brake posts (single-source) · part Post mount (74 mm) — mismatch
- Brake actuation (safety-critical): bike Cable rim brake (single-source) · part Mechanical (cable) disc — mismatch
Sources:
- Giant Bicycles — XTC Jr 24 (2015) — specifications (tier 1, read 2026-08-21)
- TRP Cycling — Spyre — mechanical disc brake caliper (tier 1, read 2026-08-21)
View specifications

Sources

Giant Bicycles — XTC Jr 24 (2015) — specifications (tier 1, read 2026-08-21)

Slots in this region

Parts menu — 12 parts

Sources