TOOPRE TOL-2.5 Bicycle Derailleur Hanger Alignment Gauge – Aluminum Alloy Rear Mech Hanger Correction Tool for MTB Road Bike Repair

The TOOPRE TOL-2.5 Derailleur Hanger Alignment Gauge is a professional bicycle repair tool designed to check and correct rear derailleur hanger alignment. A bent or misaligned derailleur hanger can cause poor shifting, chain noise, inaccurate gear changes, or derailleur rubbing. This tool helps restore proper hanger position for smoother and more reliable drivetrain performance.

Made from aluminum alloy with a durable anodized finish, the tool is lightweight, strong, and suitable for workshop or home bike maintenance. The 360° rotating design allows measurement at multiple rim positions, helping users accurately compare the distance between the derailleur hanger and the wheel rim.

It is suitable for mountain bikes, road bikes, gravel bikes, folding bikes, and most bicycles with a replaceable rear derailleur hanger.

Key Features

• Professional hanger alignment tool
  Used to check and correct bent rear derailleur hangers.

• Improves shifting performance
  Helps solve many shifting problems caused by hanger misalignment.

• 360° rotation correction
  Allows measurement around the wheel rim for accurate alignment.

• Aluminum alloy construction
  Lightweight, durable, and corrosion-resistant with anodized finish.

• Stainless steel measuring rod
  Clear scale markings for easy and accurate measurement.

• Sliding bracket design
  Adjustable bracket helps measure the distance between the rim and derailleur hanger.

• Precision threaded fixing bolt
  M10 fixing screw with 5mm hex socket for secure installation.

• Removable knurled handle
  Anti-slip handle design for easier operation and better control.

• Box packaging
  Supplied in a protective box for storage and transport.

Specifications

Package Includes

• 1 × Main Correction Rod
• 1 × Sliding Bracket
• 1 × Scale Measuring Rod
• 1 × Inner Shaft
• 1 × Knob and Shaft
• 2 × Handles
• 2 × O-Rings
• 1 × M10 Set Screw
• 1 × English Manual
• 1 × Retail Box

Detailed Description for Independent Website

The TOOPRE TOL-2.5 Bicycle Derailleur Hanger Alignment Gauge is an essential repair tool for accurately checking and correcting rear derailleur hanger alignment. Even a slightly bent hanger can lead to unstable shifting, chain skipping, cassette noise, and inaccurate derailleur positioning. With this alignment gauge, you can diagnose and correct the hanger position before replacing expensive drivetrain components.

The tool attaches directly to the rear derailleur hanger mounting hole. By rotating the tool around the wheel and measuring the distance to the rim at different positions, users can quickly identify whether the hanger is bent inward, outward, upward, or downward. The correction rod can then be used as a lever to gently adjust the hanger until the measurement is even around the rim.

Built with an aluminum alloy body, precision threads, a movable sliding bracket, and a stainless steel measuring rod, the TOOPRE TOL-2.5 provides a practical balance of durability, low weight, and ease of use. It is suitable for bike shops, mobile mechanics, and home cyclists who want better drivetrain performance.