Shimano Disc Brake Adapters | SM-MA Series

Choose from wide range of Shimano Disc Brake Adaptors for your bike build needs.

Shimano Adapters are listed by: Rotor Size / Caliper Mount / Front or Rear / Bike Mount Tab / Mfg Part Number

• For instance a 160mm / 74mm / Front / 51mm IS / SM-MA-F160P/S
• Rotor Size = 160mm
• Caliper mount drill = 74mm
• Bike location = Front
• Mount on bike or fork = 51mm IS
• Shimano's part number = SM-MA-F160P/S
• Because there are new versions of Shimano adapters there may be duplicate fits shown

Package contents: Shimano brake adaptor x 1pc. Bolts for installation not included.

Cycling Boutique's Quick Guide on Shimano ISMMAF Series – Mount Types

The ISMMAF series are Shimano Flat Mount disc brake adapters used to match rotor size to frame/fork mounts.

Available ISMMAF Types:

• ISMMAF140P/P
– Flat mount → Flat mount
– For 140 mm rotor
– Typically rear (no adapter on some frames)

• ISMMAF160P/P
– Flat mount → Flat mount
– For 160 mm rotor
– Common for rear 160 mm setups

• ISMMAF160P/D
– Flat mount → Post mount
– For 160 mm rotor
– Common on forks converting flat-mount caliper to post-mount fork

• ISMMAF180P/P
– Flat mount → Flat mount
– For 180 mm rotor
– Used on select gravel / MTB-adapted setups

Quick rule:
• Frame/Fork + Rotor size decide the ISMMAF type
• Flat → Flat = P/P
• Flat → Post = P/D

*Note: Images are for representational purposes only. Actual size/packaging varies with product type/size.

Cycling Boutique is The Shimano - The official sales, support, and warranty services for Shimano in India.

When you buy a new bicycle in India or already riding a bicycle, you must have noted that Bike brands love this - Be it Trek, Specialized, Cannondale, Giant, Scott, Polygon, Merida, Marin, Bergamont, Btwin, Schwinn, Ridley - you will see all brands bicycles with an Altus component in use. The giant Shimano Gearing Systems and Components collection is in ready stock at Cycling Boutique.

Cycling Boutique is a fully certified and authorized sales and service center for Shimano products in India. Cycling Boutique is well-versed with Shimano components, extensive service track records, and top-notch bicycle mechanics in its service support center. Shimano's cutting-edge technology and service operations directly train and certify our employees.

When buying Shimano bicycle components in India, be assured that Cycling Boutique is the go-to place with 100% original, genuine Shimano components with trustable authenticity and trust. Our friendly technical support staff will be able to address any of your technical issues - be it a silly-looking beginner question to the most challenging solvable bicycle mechanical problems.