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Avid Disc Brake BB5 Road Platinum CPS — main product image
Avid

Avid Disc Brake BB5 Road Platinum CPS

★★★★★4.6 (29 reviews)

Reliable mechanical disc braking for road bikes with tool-free pad adjustment and precise CPS alignment.

$42.34*
✓ In Stock on Amazon.com
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Avid BB5 Road Platinum CPS is a cable-actuated mechanical disc brake built specifically for road bikes equipped with short-pull brake levers. Its mono-block aluminum caliper provides a rigid, lightweight platform at just 170g, and the included G2 CleanSweep rotor offers 6-bolt and 44mm BCD mounting compatibility for broad hub support. The outboard pad adjuster is accessible by hand without tools, letting riders quickly dial in pad clearance as pads wear down — a practical feature for long rides and touring where convenience matters.

What sets the BB5 apart from simpler mechanical disc brakes is the Tri-Align Caliper Positioning System (CPS), which uses alignment washers to allow precise lateral and rotational adjustment of the caliper on its mount. This makes it straightforward to center the rotor between the pads, reducing drag and eliminating the rubbing that can plague less adjustable designs. The adjustable spring tension adds another layer of customization, allowing riders to tune the lever feel and pad return speed to their preference. While it does not match the raw power and modulation of hydraulic disc brakes, the BB5 Road delivers reliable, predictable stopping in a package that is simple to install, adjust, and maintain.

Key Features

Precision-engineered Avid BB5 Road Mechanical Disc Brake for road cycling offers reliable stopping power with a durable aluminum caliper and mono-block design for superior performance.

Designed for short-pull brake levers and compatible with 74mm post-mount adapters, providing seamless integration with most road bike setups.

Includes a G2 CleanSweep 6-bolt/44mm-BCD rotor and BB-5 specific pads, ensuring easy installation and maintenance with tool-free pad adjustment and replacement.

Features the Tri-Align Caliper Positioning System (CPS) for precise rotor alignment, minimizing brake drag and maximizing braking efficiency in competitive and everyday riding.

Sleek, lightweight grey finish (only 170g caliper weight), optimized for durability and style, making it ideal for road cyclists seeking high-performance, low-maintenance mechanical disc brakes.

Specifications

Brake Type
Mechanical Cable Disc Brake
Lever Compatibility
Short-Pull (Road)
Mount Type
74mm Post Mount
Caliper Design
Mono-Block Aluminum
Caliper Weight
170g
Alignment System
Tri-Align CPS (Caliper Positioning System)
Pad Adjustment
Outboard Tool-Free Knob
Spring Tension
Adjustable
Included Rotor
G2 CleanSweep, 6-Bolt / 44mm BCD
Finish
Platinum Grey
Brand
Avid
Model
Disc Brake BB5 Road Platinum CPS

Pros & Cons

👍 Pros

  • Tri-Align CPS system allows precise caliper-to-rotor alignment to eliminate drag and rubbing
  • Tool-free outboard pad adjustment makes it easy to compensate for pad wear on the road
  • Mono-block aluminum caliper is lightweight at 170g and structurally rigid
  • Includes G2 CleanSweep rotor for a complete brake setup out of the box
  • Adjustable spring tension lets riders customize lever feel and pad return

👎 Cons

  • Mechanical cable actuation does not provide the same modulation and power as hydraulic disc brakes
  • Only one pad (outboard) adjusts to the rotor, so the inboard pad position is fixed
  • Mounting bracket and adapter are sold separately, adding to overall cost
  • Cable-operated design requires periodic cable tension adjustment as cables stretch
  • Pad contact is single-piston, which can lead to slightly uneven rotor wear over time

Frequently Asked Questions

It is designed specifically for short-pull brake levers, which are standard on road and drop-bar bikes. It is not compatible with long-pull mountain bike levers.
Yes, it includes a G2 CleanSweep rotor with 6-bolt and 44mm BCD mounting options. The mounting bracket is sold separately.
The BB5 features outboard pad adjustment using a simple knob, allowing you to compensate for pad wear and set pad-to-rotor clearance without removing the wheel or using tools.
CPS uses special washers between the caliper and mount that allow fine rotational and lateral alignment of the caliper, ensuring the rotor runs centered between the pads to minimize drag and noise.
It uses a 74mm post-mount adapter interface, which is the standard for road disc brake installations.

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