The Shimano Dura-Ace BR-R9210-RS is the flagship rim brake caliper for direct mount seat stay frames, delivering the stopping precision and feel that elite road and track riders demand. Built for the Dura-Ace R9200 groupset, it is engineered for riders who run rim brake technology and refuse to compromise on performance or weight.

Highlights

  • SLR-EV dual symmetric pivot: Twin bearings and a roller reduce friction in the pivot mechanism, delivering smooth, linear braking modulation and superior stopping power.
  • Lightweight aluminium construction: Aluminium caliper body paired with titanium pivot nut and anchor bolt shaves grams without sacrificing stiffness.
  • Magnesium brake shoe holder: Lightweight magnesium pad holders reduce rotating mass while maintaining precise pad alignment.
  • Pivoting cartridge brake pads: Angling shoe cartridges make it easy to set perfect pad-to-rim contact for consistent, fade-free braking.
  • Integrated cable tension adjuster: Tactile, accessible barrel adjuster allows on-the-fly cable tension tuning without tools.
  • Aerodynamic release lever: Lever closes inline with the caliper body to minimise drag when not in use.
  • 28mm tyre clearance: Accommodates tyres up to 28mm for versatility across road and endurance builds.

SLR-EV Technology

Shimano's SLR-EV (Servo-Link Ratio — Enhanced Value) system uses a dual symmetric pivot design with twin bearings and a roller to minimise mechanical losses through the caliper. The result is a direct, efficient power transfer from lever to pad, with a consistent and predictable feel across varying braking intensities — from gentle modulation to hard stops.

Direct Mount Seat Stay Fitment

The BR-R9210-RS uses a two-bolt direct mount configuration designed for rear seat stay attachment points. This mount style is found on many modern aero and performance road frames and provides a stiffer, more precise connection between the caliper and the frame compared to traditional single-bolt brakes. Confirm your frame features a direct mount seat stay bracket before ordering.

Compatibility & Fit

The BR-R9210-RS is compatible with Shimano road STI levers including ST-R9250, ST-R9100, ST-R9150, and ST-R9160, as well as older 11-speed groupset levers (R8000, R7000, 6800, 5800, 9000 series) and BL-TT79 brake levers. Rim width compatibility: 20.8–28mm external. Maximum tyre clearance: 28mm. Includes R55C4 brake pads for alloy rims.

Shimano offers a limited warranty covering defects in materials and workmanship. For warranty support, return the item to Tune Cycles.
  • SLR-EV dual symmetric pivot design with twin bearings and roller for smooth, precise modulation
  • Direct mount seat stay fitment — stiffer and more aerodynamic than traditional single-bolt mount
  • Aluminium caliper body with titanium pivot nut and anchor bolt for a lightweight, rigid build
  • Magnesium brake shoe holder reduces weight without compromising pad alignment
  • Pivoting cartridge shoe system for easy, accurate pad-to-rim adjustment
  • Tactile inline cable tension adjuster for on-the-fly brake feel tuning
  • Integrated aerodynamic quick-release lever sits flush with the caliper when closed
  • Supports tyres up to 28mm wide
  • R55C4 alloy-rim brake pads included
Part NumberBR-R9210-RS
GroupsetDura-Ace R9200
Mount TypeDirect Mount — Rear Seat Stay
Weight152 g
Reach51 mm
Maximum Tyre Clearance28 mm
Rim Width Compatibility20.8–28 mm (external)
Brake Pad IncludedR55C4 (alloy rim)
Caliper MaterialAluminium
Pivot / Hardware MaterialTitanium
Brake Shoe Holder MaterialMagnesium
ColourBlack (anodised)
Compatible LeversST-R9250, ST-R9100, ST-R9150, ST-R9160, R8000, R7000, 6800, R7000, 5800, 9000 series, BL-TT79
SKU SHM-IBRR9210RS82
Barcode # 4550170893958
Brand Shimano

More From This Category