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Evans Cycles UK£28.00Visit shop Tektro Aries Md300 Disc Calliper Black
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The Tektro Aries MD300 is a reliable cable-actuated mechanical disc brake system engineered for mountain bike enthusiasts looking for dependable stopping power without the complexity of hydraulic lines. It is ideal for riders seeking an easy-to-maintain upgrade or replacement, offering consistent performance through automatic caliper centering and floating pad technology; however, it lacks the raw stopping force and modulation found in higher-end hydraulic braking systems.
| Series | Aries MD300 |
|---|---|
| Model Part Number | 4717592043983 |
| Brand | Tektro |
The Aries MD300 is designed for linear pull (V-brake) levers. It may not provide the correct leverage ratio for standard drop-bar road bike levers.
Yes, the unit comes with low-noise resin pads pre-installed.
Pad life depends on riding conditions, but you should inspect them every 500 miles or whenever you notice a reduction in stopping power.
No, the 172g unit weight excludes the rotor, adapter, and mounting bolts.
The system is optimized for resin pads to ensure quiet operation; metallic pads may cause increased noise and rotor wear.
Adjust the barrel adjuster at the brake lever to increase cable tension, or tighten the anchor bolt at the caliper if there is excess slack.
Loosen the mounting bolts, squeeze the lever to re-center the caliper, and tighten the bolts. If rubbing persists, check if the rotor is slightly bent.
Clean the rotor surface with isopropyl alcohol to remove oil or debris, and check the resin pads for signs of glazing.
To install the Tektro Aries MD300, mount the caliper to the frame or fork using the appropriate adapter. Connect your mechanical brake cable to the actuator arm, ensuring that the cable housing is seated firmly to prevent mushy lever feel. The automatic centering feature makes initial alignment straightforward: loosen the mounting bolts, engage the brake lever fully, and tighten the bolts while the brake is held down to center the pads. For ongoing care, periodically check cable tension using the barrel adjuster at the lever. Keep the rotors clean with isopropyl alcohol to prevent squealing, and replace the resin pads as soon as the friction material wears below 1mm in thickness.
