Magura QM 44 adapter PM 180-203

Magura QM 44 adapter (PM 180 → 203)

QM 44 – Original Magura adapter to adapt the Post Mount (PM) 180 mm caliper to a 203 mm brake disc. A quick and clean way to increase braking power and thermal capacity without changing calipers.

Why choose

• Quick upgrade: from 180 mm to 203 mm with a single adapter.
• More power and cooling: 203 mm rotor = shorter stopping distances, less fading.
• OEM precision: Magura quality – correct spacing, rigid construction.
• Wide range of applications: MTB, E-MTB, S-Pedelec, city bikes, e-moto conversions.

Compatibility

• Attaching the clamp: Post Mount (PM) 180 mm → 203 mm
• Rotor: Ø203 mm (e.g. Magura MDR-P/MDR-C 203)
• Location: front or rear (according to frame/branch specifications and permissible diameter)

Specifications

• Model: Magura QM 44
• Type: PM → PM elevating adapter (180 → 203 mm)
• Material: robust machined alloy
• Compatibility with Magura and other PM standard calipers

What’s included

• 1× adapter QM 44
• 2× fixing screws

Installation tips

• Make sure the frame/branch supports the 203 mm rotor.
• Use a medium-strength threadlocker; tighten to the manufacturer’s Nm.
• After installation, centre the caliper and perform the bed-in procedure (20-30 stops).

FAQ

Does it fit a Center Lock hub?
The adapter changes the position of the caliper (PM), not the hub type. With Center Lock, use the appropriate CL→6-bolt rotor adapter if required.

Compatible with any 203 mm disc?
Yes, if the disc is compatible with your system and frame/branch diameter.