Shimano Mount Disc Brake Adapter For 180mm (SM-MA-F180P/S and SM-MA-R180P/S)

The Shimano SM-MA-F180P/S and SM-MA-R180P/S adapters enable the installation of 180mm rotors by adapting different mounting standards for brake calipers and bike frames or forks. These adapters provide seamless compatibility and allow for enhanced braking performance with larger rotors.

SM-MA-F180P/S: Front Fork Adaptation: The SM-MA-F180P/S adapter is designed to mount a Shimano Post Mount caliper onto a fork with an International Standard (IS) mount, making it compatible with 180mm rotors. Ideal for front forks with IS2000-Standard mounts, this adapter facilitates improved braking performance by accommodating the larger rotor size.

SM-MA-R180P/S: Rear Frame Adaptation: The SM-MA-R180P/S adapter allows Shimano Post Mount calipers to be installed on frames with IS mounts, enabling the use of 180mm rotors at the rear. This ensures compatibility for rear braking systems while enhancing stopping power.

Durable Aluminum Construction: Both adapters are crafted from high-quality aluminum, ensuring durability and lightweight performance. Their robust design withstands the stresses of aggressive braking, providing reliability for demanding riding conditions.

Enhanced Braking Efficiency: By enabling the installation of 180mm rotors, these adapters improve braking power and control, particularly in downhill or technical terrain. The larger rotor size offers greater stopping power, increasing rider confidence and safety.

Designed for ease of use, the adapters include the necessary hardware for quick and straightforward installation. Their versatility makes them suitable for a wide range of bikes, from mountain to gravel setups.

We ship across India. Shipping is free on orders above ₹2,000, and ₹99 is charged on orders below ₹2,000. Cash on Delivery is available for orders up to ₹20,000, with additional COD charges based on order value. Most orders are delivered within 3–6 working days, though delays may occasionally occur. Please note that most Shimano products may take longer to ship. View full shipping policy.

Returns can be initiated within 7 days of delivery. Items must be unused, in original condition, and returned with all tags and packaging intact. Returns are available only on select categories such as apparel, helmets, jerseys, gloves, and similar items. Wetsuits and products discounted above 5% are not eligible for return.

Returns are not accepted for compatibility-related issues unless the product description on our website was incorrect. Return shipping must be arranged by the customer, as pickup is not available.

For eligible returns, you can choose an exchange, store credit, or a monetary refund. Refunds are processed after deduction of applicable shipping and transaction charges. Order cancellations are only possible before the order is processed. View full Return & Refund Policy.