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eBay£34.99Visit shop NEW Shimano Sora BR-R317 Disc Brake Rear Calliper without Rotor IS Mount Silver
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The Shimano Sora BR-R317 is a mechanical disc brake caliper ideal for road and cyclo-cross cyclists looking to improve stopping performance without transitioning to complex hydraulic systems. It offers a lightweight, low-profile design that integrates seamlessly with standard mechanical road brake levers and STI shifters. While it provides consistent and reliable braking, users should note that as a mechanical system, it requires periodic cable tension adjustments compared to self-adjusting hydraulic brakes.
| Series | Sora |
|---|---|
| Model Part Number | BR-R317 |
| Brand | Shimano |
No, the BR-R317 is designed for post-mount standards. You would need a post-to-flat mount adapter if your frame uses flat mounts.
While it may physically mount, the cable pull ratio for MTB levers is different from road levers, which may lead to poor brake modulation.
Yes, it typically includes the necessary hardware to attach the caliper to your frame's mounting tabs.
Adjust them whenever you notice increased lever travel or when the stopping power begins to feel inconsistent.
No, this is a mechanical disc brake caliper actuated by a standard steel brake cable.
Replace your brake housing with compressionless housing and ensure cable ends are trimmed cleanly.
Loosen the mounting bolts, re-center the caliper over the rotor, and ensure the pad clearance adjustment screw is not tightened too far.
Clean the rotor with disc brake cleaner and check if the pads have been contaminated with oil or grease.
For setup, the BR-R317 uses a standard post-mount configuration. Ensure your frame or fork is compatible with the mounting standard or use the appropriate adapter. When installing, center the caliper over the rotor by loosening the bolts, actuating the brake lever to hold the caliper in place, and then tightening the bolts in an alternating pattern. Compatibility-wise, this unit is optimized for New Super SLR road levers. To care for the unit, periodically wipe the rotor with isopropyl alcohol to remove oil residue and check the brake pads for wear every 500-1000 miles, adjusting the internal pad tension screw to keep the lever pull consistent.
