BuildMyMTB
Prototype - Evolving Daily

Magura MT4 Front Brake

What the checker says2will not fit2check before you buy

Run variant by variant through the mountain bike builder’s own engine. Every sentence below is the checker’s, unedited. Nothing here says this part fits your bike; it says what it does and does not fit among the parts we hold.

Checked against 6082 verified mountain bike parts in this catalog. 6054 produced no finding of any kind.

Will not fit

  • Will not fiterror · Front RotorFront rotor too big for the caliper as recorded here: 220mm is larger than 203mm, the largest rotor size this catalog records for the Magura MT4 caliper. The caliper maker's own rotor chart is the place to check. On 15 of the 177 verified rotors in this catalog.
  • Will not fiterror · Front RotorFront rotor too big for the caliper as recorded here: 223mm is larger than 203mm, the largest rotor size this catalog records for the Magura MT4 caliper. The caliper maker's own rotor chart is the place to check. On 5 of the 177 verified rotors in this catalog.

Check before you buy

  • Check before you buywarning · Front RotorFront rotor thickness: Magura MT4 is designed for 1.8-2.0mm rotors and this rotor is 2.3mm - check the brake maker's rotor-thickness spec before buying. On 8 of the 177 verified rotors in this catalog.
  • Check before you buywarning · Front RotorFront rotor thickness: Magura MT4 is designed for 1.8-2.0mm rotors and this rotor is 2.2mm - check the brake maker's rotor-thickness spec before buying. On 4 of the 177 verified rotors in this catalog.
The checker compares the dimensions listed in what we check, and what we don’t. “No conflicts found” means no conflict among those dimensions — not a guarantee that a build works. Errors mean it won’t fit; warnings mean it works but check; infos are notes.

$85.00 MSRP·230 g

What the maker states

Mount
Post mount caliper
Pistons
2-piston caliper
Maximum rotor
Rotor up to 203 mm
Design rotor thickness
Design rotor thickness: 1.8
Design rotor thickness maximum
Design rotor thickness maximum: 2
Lever accepts
I-Spec B, I-Spec II, I-Spec EV and MatchMaker X
The rest of what the maker states2 not published

2 further fields the checker looks for are not published by Magura, so we leave them blank rather than estimate them, and those 2 checks stay silent on this front brake. They are excludes rotor and maximum rotor evidence. Each is recorded as “not stated by the maker (not checked)”.

Source: the maker’s page. Last checked 2026-07-16.

Checked against

The checker ran this model against every verified part below that it has a slot for, the same way it checks a build in the builder. What follows is the verdict it actually produced for that specific pairing — not a recommendation, and not a guarantee any of these parts fits your own bike.

6 of 1862 counterparts with a page of their own that the checker actually probed this model against, in alphabetical order by brand and model — never by price, popularity or the verdict itself.

Where this sits

Previous: Magura Louise EliteNext: Magura MT5All Magura brakesOpen a variant in the builder to see the ones that apply to your own parts