In this category you will find brake disc adapters for bicycles, e-bikes and mountain bikes – precisely fitting adapter solutions for Shimano, Magura, SRAM and many other brake systems. Whether you want to upgrade to a larger brake disc, retrofit a new brake system or combine different mounting standards: Here you will find adapters from IS to Post Mount, PM to IS, spacers and complete mounting accessories for precisely tuned braking performance, with fast delivery throughout Switzerland and the Principality of Liechtenstein.
Brake disc adapters are the central connecting piece between brake caliper, fork and frame. They enable the mounting of larger brake discs, the replacement of brake systems from different manufacturers and the adaptation to specific frame standards. In the range you will find adapters for IS mounts, Post Mount mounts as well as special solutions for performance brakes and downhill applications – matched to the common disc diameters from 140 mm to over 220 mm.
Adapters for Every Mounting Standard
Whether your frame or fork is built to IS standard (International Standard) or Post Mount standard (PM): you will find suitable adapters as PM-to-IS, IS-to-PM, PM-to-PM variants as well as spacers for plus sizes. The adapters are precisely matched to the required disc diameters – from standard size to powerful upgrade variants for enduro and downhill use. This ensures that your brake caliper sits millimetre-precisely and full braking power is available.
Mounting Larger Brake Discs – More Braking Power
Switching to a larger brake disc brings noticeably more braking power and better heat dissipation – especially on long descents or with high system weight on e-bikes. With the right adapter, for example, you can upgrade from 160 mm to 180 mm, from 180 mm to 203 mm or even to 220 mm. The appropriate adapter ensures that the brake caliper is positioned correctly and the pad surface rests fully on the brake disc.
The category is suitable for cyclists, mountain bikers, e-bike users and mechanics in Switzerland who want to convert their disc brake, mount a larger brake disc or adapt their brake system to a different frame standard. Workshops and hobby mechanics will also find the right adapter components for precise and safe brake upgrades.
Quality, Safety & Product Selection
For brake disc adapters, dimensionally accurate manufacturing, corrosion-resistant materials such as anodized aluminum or stainless steel, and a durable screw connection are crucial. Tested adapters from renowned manufacturers ensure the necessary stability and alignment so that the brake works reliably even under high loads and safety is not compromised.
Frequently Asked Questions
What is a brake disc adapter and what is it needed for?▾
A brake disc adapter is a mounting component that fixes the brake caliper in the correct position relative to the brake disc. It is needed when a larger brake disc is to be fitted, a brake system change is due, or the standard mount does not directly fit the desired brake caliper. Adapters compensate for different bolt circles, mounting standards and disc diameters.
Which brake disc adapters are compatible with Shimano brakes?▾
For Shimano brakes, adapters with IS or PM mounts are common, matched to the respective brake caliper and frame or fork standard. Shimano typically uses Post Mount attachment, so corresponding PM-to-IS adapters or PM-to-PM adapters with suitable bolts and spacers are used.
Can I use an adapter for a larger brake disc?▾
Yes, with a suitable adapter a larger brake disc can be fitted, for example an upgrade from 160 mm to 180 mm or from 180 mm to 203 mm. The adapter must be designed exactly for the desired disc diameter and the existing mounting standard. In addition, it should be checked whether the frame and fork clear the larger diameter.
What should I pay attention to when installing a brake disc adapter?▾
During installation, pay attention to the correct alignment of the adapter, the use of the correct bolt length and the specified tightening torque. After installation, the brake caliper should be centred and the brake disc checked for free movement. Safety-relevant screw connections should be secured with medium-strength threadlocker.
Which adapter fits my Magura brake?▾
Magura brakes mostly use Post Mount standards, so Magura-compatible adapters are designed as PM-to-PM or IS-to-PM variants depending on the frame or fork mount. For older Magura models with specific mounting dimensions, there are manufacturer-specific adapter solutions that are precisely matched.
Are front and rear brake disc adapters different?▾
Yes, front and rear adapters often differ in design, hole spacing and installation position. At the front, a fork mount with IS or PM standard is usually used; at the rear, the adapter is determined by the chainstay or dropout mount. An adapter that fits the front is often not directly usable at the rear and vice versa.
How do I tell if the adapter fits my frame and fork?▾
The decisive factors are the mounting standard of the frame and fork – IS (International Standard) or PM (Post Mount) – as well as the desired disc diameter and the hole spacing of the brake caliper. A look at the manufacturer's documentation of the frame or a measurement of the mounting points provides information about the required adapter variant.
Which bolts do I need for adapter mounting?▾
For adapter mounting, stainless steel hex socket bolts in common metric sizes such as M5 or M6 are generally used. The exact bolt length results from the adapter thickness and the thread depth of the mount. Many adapters are supplied in sets with matching bolts and washers, allowing immediate installation.
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