SRAM / Avid Brake Mounts are genuine brake caliper adapters to allow you to fit different sizes or brake rotor on your frame or fork.
Post to Post mount: To suit Post Mount frames or forks, with Post Mount brake calipers.
– Post Mounts bolt in towards your frame/fork.
– This is different to IS Mount which bolts in perpendicular to your frame/fork. These adapters are not IS compatible.
To work out what size you need:
Check what size rotor your frame or fork is designed to natively accept (look up the specs)
Check what size rotor you want to install.
If you have 160mm frame mount, and want to run a 180mm rotor, choose a +20mm adapter.
For example, the Rockshox ZEB features a native 200mm brake mount. To run a 220mm rotor, choose a +20mm brake adapter.
Brand compatibility: These adapters are designed for SRAM and Avid brakes. Other brands of brake will usually fit fine, but fitment is not guaranteed.
Still not sure? Look up the adapter model the SRAM Mounting Specs in the next tab.
Adapter 3 S (+3mm) – Spacers Only (No Bolts)
Rotor Capacity: +3mm
Spacer washers to adapt a 200mm native post mount to 203mm rotor.
Requires bolts (M6 x 18mm thread length)
Brand: SRAM / Rockshox
Manufacturer SKU: 11.4018.059.000
Supplier SKU: RX114018059000
Barcode: 710845763083
Adapter 20 S (+20mm) – Spacers & Bolts
Rotor Capacity: +20mm
Lighter than a full adapter, not recommended for heavy duty applications.
Includes all bolts for standard & CPS hardware.
Brand: Avid
Manufacturer SKU: 00.5318.008.003
Supplier SKU: AB005318008003
Barcode: 710845714399
Adapter 20 P (+20mm) – Adapter & Silver Bolts
Rotor Capacity: +20mm
2-bolt brake adapter suitable for SRAM / Avid brakes except Maven.
Includes all bolts for standard & CPS hardware.
Brand: Avid
Manufacturer SKU: 00.5318.007.004
Supplier SKU: AB005318007004
Barcode: 710845768231
Adapter 20 P (+20mm) – Adapter & Rainbow Bolts
Rotor Capacity: +20mm
2-bolt brake adapter suitable for SRAM / Avid brakes except Maven.
Includes all bolts for standard hardware only.
Brand: Avid
Manufacturer SKU: 00.5318.007.005
Supplier SKU: AB005318007005
Barcode: 710845843518
Adapter 20 P-1 (+20mm) – Adapter & Silver Bolts
Rotor Capacity: +20mm
4-bolt brake adapter suitable for SRAM / Avid brakes including Maven.
Geometry to suit 140-160mm and 160-180mm configurations.
Includes 2 x stainless bolts, requires 2 more M6 x 18mm bolts.
Brand: SRAM
Manufacturer SKU: 00.5318.007.009
Supplier SKU: SR005318007009
Barcode: 710845905810
Adapter 20 P-2 (+20mm) – Adapter & Silver Bolts
Rotor Capacity: +20mm
4-bolt brake adapter suitable for SRAM / Avid brakes including Maven.
Geometry to suit 180-200mm and 200-220mm configurations.
Includes 2 x stainless bolts, requires 2 more M6 x 18mm bolts.
Brand: SRAM
Manufacturer SKU: 00.5318.007.010
Supplier SKU: SR005318007010
Barcode: 710845905827
Adapter 40 P (+40mm) – Adapter & Silver Bolts
Rotor Capacity: +40mm
4-bolt brake adapter suitable for SRAM / Avid brakes including Maven.
Includes 2 x stainless bolts, requires 2 more M6 x 18mm bolts.
Brand: Avid
Manufacturer SKU: 00.5318.007.003
Supplier SKU: AB005318007003
Barcode: 710845714450
Adapter 40 P (+40mm) – Adapter & Rainbow Bolts
Rotor Capacity: +40mm
4-bolt brake adapter suitable for SRAM / Avid brakes including Maven.
Includes all 4 bolts required.
Brand: Avid
Manufacturer SKU: 00.5318.007.006
Supplier SKU: AB005318007006
Barcode: 710845843525
SRAM Disc Brake Caliper Mounting Specs
