Shimano Dura-Ace BR-R9210-RS Road Caliper Brake - Rear Seat Stay Mount Black MFPN=BX-DR4-08AWC-BK The weight savings were minimal

The weight savings were minimal but they sure looked cool

Sold in a box of 20 spokes Color Black Defined Color Black Length 288 Spoke Interface J-Bend Spoke Profile Bladed/Double Butted Thread Diameter 2

Perfect for the car travelling to an event or a minimalist home shop setup

and a more stable

Shimano Dura-Ace BR-R9210-RS Road Caliper Brake - Rear Seat Stay Mount Black MFPN=BX-DR4-08AWC-BK The weight savings were minimalWith Shimano's SLR EV dual symmetric pivot design the short arm Dura Ace R9200 series caliper brakes employ twin bearings and a roller to realize greater efficiency and deliver superior modulation and stopping power. They are offered in traditional and direct mount options. Exceptional balance of rigidity weight and stopping power Maximum tire size is 28C Lightweight magnesium brake shoe holder Brake Lever Actuation Short Pull Super SLR Pad Type