Tektro R539 Long Drop Brake Calipers - Black
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Merlin CyclesTektro Black R539 Long Drop Brake Calipers - Pair
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Product Information
Full details
The Tektro R539 Long Drop Brake Calipers are an ideal choice for cyclists seeking reliable stopping power on road frames that require extra clearance for mudguards or wider tires. These calipers feature a 47-59mm reach and an updated mechanical ratio that improves braking performance, making them a practical upgrade for commuters and touring enthusiasts alike. While they provide excellent durability and lightweight construction, users should verify their frame's mounting style and compatibility with the 47-59mm reach range before installation to ensure perfect alignment.
All features
| Series | R539 |
|---|---|
| Model Part Number | TK-R539-K |
| Brand | Tektro |
Extended Product Information
FAQs
Are these brakes suitable for cyclocross bikes?
These are road calipers; they are intended for use on frames with standard road brake mounting holes rather than disc or cantilever mounts.
Do these calipers come with brake pads?
Yes, the Tektro R539 set includes P422 adjustable angle cartridge pads.
Can I use these with wide tires?
The quick-release mechanism is designed to accommodate wider tires, but verify that your frame's chainstay and fork crown clearance allows for the tire width you intend to use.
What is the weight of the R539 calipers?
The calipers weigh approximately 160 grams each.
Are these compatible with both front and rear mounting?
The set includes both dedicated front and rear calipers designed to be mounted to standard recessed bolt road frames.
Troubleshooting
Brake lever feels spongy or travels too far
Check your cable tension and ensure the housing ends are seated correctly in the stops.
Brake pads are not hitting the rim squarely
Loosen the pad fixing bolt on the P422 cartridge and adjust the angle, then retighten firmly.
Brake arm pulls to one side
Use the centering screw on the side of the caliper to balance the spring tension until the arms return to center equally.
Pros and Cons
Pros
- Increased clearance for mudguards and wider tires
- Improved braking leverage compared to standard short-reach calipers
- Durable forged aluminum construction
- Easy-to-use quick-release with safety lock
- Adjustable cartridge brake pads for simple maintenance
Cons
- Not suitable for frames requiring short-reach (39-49mm) brakes
- Requires proper frame clearance to utilize the full long-reach adjustment
- Only available for specific road mounting configurations
Setup, Compatibility & Care
To install the Tektro R539 calipers, ensure your frame features standard recessed mounting holes. Begin by mounting the front and rear calipers using the provided hardware, ensuring the centering bolt is tight. Adjust the P422 cartridge pads so they are flush with the rim braking surface when the lever is pulled.
For ongoing care, regularly inspect the brake pads for wear and ensure the quick-release lever is fully engaged in the 'closed' position before every ride. To maintain the mechanism, clean the pivot points periodically with a light bicycle-specific degreaser and apply a drop of light lubricant to keep the arms moving smoothly. Always verify that your rim width is compatible with the caliper's tire clearance capabilities after adjusting the safety-lock quick-release.