Tektro Aries MD-M300 Mechanical Disc Brake Caliper - Post Mount | Long Pull

Tektro Aries MD-M300 Mechanical Disc Brake Caliper - Post Mount | Long Pull Tektro

Tektro Aries MD-M300 Mechanical Disc Brake Caliper - Post Mount | Long Pull

Tektro Aries MD-M300 Mechanical Disc Brake Caliper - Post Mount | Long Pull

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Is the Tektro Aries MD-M300 the Best Budget Disc Brake?

The Tektro Aries MD-M300 Mechanical Disc Brake Caliper brings reliable disc braking to builds where hydraulic systems are overkill or outside the budget. Its single-piece aluminum body keeps weight low and rigidity high, and the mechanical actuation means you can run standard cable housing with no bleeding or fluid maintenance. In wet, muddy, or adverse conditions, the MD-M300 delivers braking consistency that rim brakes simply cannot match.

This caliper uses a post mount interface and is actuated by long-pull (linear) brake levers, making it a natural fit for mountain bike and hybrid builds. It ships with Tektro E10.11 resin pads installed and is recommended for use with 1.8mm rotors, sold separately. If you are upgrading a bike from rim brakes to disc or replacing a worn caliper on a budget-conscious build, the Aries MD-M300 delivers real stopping power without the complexity of a hydraulic system.

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$29.99
$29.99
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Out of Stock

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  • Estimated delivery: Jul 19 - Jul 23

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Specifications

  • Type: Mechanical disc brake caliper
  • Actuation: Long pull (linear)
  • Mount: Post mount
  • Body: Single-piece aluminum
  • Included Pads: Tektro E10.11 resin
  • Recommended Rotor: 1.8mm thickness (sold separately)
  • Brand: Tektro

FAQ

Can I use the MD-M300 with drop-bar brake levers?

No. The MD-M300 requires long-pull (linear) brake levers, which are standard on flat-bar mountain bike and hybrid setups. Drop-bar levers are short-pull and will not provide enough cable travel to fully engage the caliper.

Does the MD-M300 come with a rotor?

No, the rotor is sold separately. Tektro recommends using a 1.8mm thick rotor for optimal pad contact and braking performance with this caliper.

How does a mechanical disc brake compare to hydraulic?

Mechanical disc brakes use a cable to actuate the caliper, which means simpler maintenance and no fluid bleeding. Hydraulic systems offer more power and better modulation, but mechanical calipers like the MD-M300 are easier to set up, adjust, and service with basic tools.

Best For

Riders upgrading from rim brakes to disc on mountain bike or hybrid frames, or anyone replacing a mechanical disc caliper who wants reliable all-weather stopping power without the maintenance complexity of a hydraulic system.

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