Shimano
Rear D/D Disc Brake Adapter (160mm)
Best choice for cyclists upgrading to 160mm flat mount rear brakes.
Upgrade your bike's stopping power with the Shimano Rear D/D Disc Brake Adapter. Engineered for Flat Mount systems, this adapter ensures precise alignment for a 160mm disc brake rotor on your rear wheel. It's the perfect solution for setting up reliable rear disc brakes, enhancing both safety and ride performance. Trust Shimano's renowned quality for a dependable and responsive braking experience that maintains the integrity of your setup on every journey.
$20.99
Owner Satisfaction
4.6
/ 5
Category Rank
417
/ 2100
#417 in Components
Price vs Category Average
-80%
Below average
Rotor Size Compatibility
160
/ mm
Who it's for
- Performance riders seeking reliable, noise-free braking alignment
- Commuters and trail riders using standard 160mm rotor setups
- All-weather cyclists needing long-lasting, corrosion-resistant hardware
Who should skip it
- Cyclists with non-standard frame mounts or rotor sizes
- Weight-conscious racers prioritizing minimalist bike builds
- Novice mechanics lacking experience with precise brake adjustments
Performance breakdown
Alignment Precision
Engineered for exact rotor positioning to eliminate unwanted brake rub.
Build Durability
Robust construction withstands high-torque braking forces without flexing or warping.
Installation Simplicity
Straightforward design makes mounting your rear caliper a quick, frustration-free task.
System Compatibility
Seamlessly integrates with standard Flat Mount frames for a factory-finish look.
Braking Responsiveness
Provides the rigid foundation necessary for consistent, predictable stopping power.
Weight Efficiency
Minimalist profile keeps your bike light without sacrificing structural integrity.
Key Specs
Rotor Size Compatibility
160mm
Mount Type
Flat Mount
Model Number
ISMMAR160DDB
Features
- Ensures 160mm rotor alignment
- Flat Mount system compatible
- Essential for rear disc brake setup
- Maintains braking system integrity
- Reliable Shimano quality
- Optimizes braking performance
What customers say
Customers highly value the Shimano Rear D/D Disc Brake Adapter for its robust construction and superior quality finish. The core praise centers on its precise fit, which ensures a straightforward and hassle-free installation process. Users appreciate how seamlessly this component integrates, allowing reliable use of 160mm rotors across various brake setups without issue. Its durability and consistent performance, even under demanding conditions, reinforce trust in the Shimano engineering. While it is a small part, its critical role in achieving optimal braking compatibility is consistently recognized and valued by riders.
Know before you buy
No, this specific adapter is designed exclusively for rear Flat Mount disc brake systems.
No, the ISMMAR160DDB model is specifically engineered to align a 160mm rotor. Using a different rotor size will result in improper pad contact and compromised braking performance.
Yes, the adapter includes the essential hardware required to securely mount your Flat Mount caliper to the frame for a 160mm rotor setup.
Flat Mount systems are identified by bolts that pass directly through the chainstay or seatstay into the caliper, rather than the side-entry bolts found on Post Mount systems. Check your frame specifications or look for the two mounting holes on the rear triangle.
While this adapter is designed for Shimano's Flat Mount standard, it is generally compatible with other brands that adhere to the same industry-standard Flat Mount specifications. However, we recommend verifying your specific caliper's mounting requirements.
Still have a question?
Ask Hayley anything about this product before you decide.