Shimano SM-MA90-F180-PP Post to Post Mount Brake Caliper Adapter Bracket 180mm

Upgrade your braking setup with the Shimano XTR SM-MA90 180mm Front Disc Brake Adaptor. Designed to precisely position your caliper for larger rotors, this adaptor allows you to step up to a 180mm disc for increased braking power and improved heat management.

Engineered from lightweight aluminium and finished to Shimano’s high standards, it ensures accurate alignment, consistent braking performance, and long-term durability—making it a reliable choice for both MTB and hybrid setups.

Key Features:

• 180mm rotor compatibility – Enables use of larger rotors for improved stopping power

• Post mount to post mount (PM-PM) – Designed for modern disc brake systems

• Precision Shimano engineering – Ensures optimal caliper alignment and braking efficiency

• Lightweight aluminium construction – Strong, durable, and corrosion-resistant

• Includes mounting hardware – Easy installation with bolts and washers included

Why Choose This Adaptor?

Moving to a larger rotor is one of the most effective ways to increase braking performance—especially for aggressive riding, heavier riders, or loaded bikes. The SM-MA90 adaptor provides a simple, reliable solution to maximise braking power while maintaining Shimano’s trusted precision and durability.