TOOPRE Road Bike Shifter Alignment Adapter, Drop Bar STI Lever Height Measuring Tool for Derailleur Hanger Alignment Gauge

The TOOPRE Shifter Measuring Adapter is designed for precise adjustment of road bike drop bar shifter positions. Used together with a derailleur hanger alignment tool, it helps measure and align the left and right STI/brake shifter lever height quickly and accurately.

Made from high-strength aluminum alloy with a stainless steel threaded rod, this adapter is durable, lightweight, and built for stable use during cockpit adjustment. The CNC-machined body features a smooth anodized finish, while the precision threads ensure a secure and tight fit with compatible alignment tools.

It is an ideal tool for bike mechanics, workshops, and cyclists who want to achieve a balanced and professional shifter setup on road bikes.

Key Features

• Designed for road bike drop bar shifter alignment
• Helps adjust the left and right shifter lever height
• Used with a derailleur hanger alignment tool
• Quickly locates and compares shifter positions
• High-strength aluminum alloy body
• Stainless steel threaded rod for durability
• CNC-machined for precise fit and smooth finish
• Anodized surface treatment for improved corrosion resistance
• Precision threads for secure installation and stable measurement
• Suitable for professional bike workshops and home mechanics

Specifications

• Brand: TOOPRE
• Model: TL-218A
• Product Name: Shifter Measuring Adapter
• Material: Aluminum Alloy + Stainless Steel
• Size: 31 × 31 × 67 mm
• Weight: Approx. 57 g per pack
• Threaded Rod: M6 × P1
• Thread Specification: M10 × P1
• Application: Road bike drop bar shifter height alignment

How to Use

1. Remove the stem top cap.
2. Screw the internal shaft into the adapter mounting hole, then tighten it into the steerer tube star nut.
3. Rotate the round alignment bar above one shifter position. Loosen the knob, move the sliding bracket and measuring rod until the measuring rod touches the top reference point of the shifter, then secure the O-ring and tighten the knob.
4. Rotate the round alignment bar to the shifter position on the opposite side. If the measuring rod is higher or lower than the reference point, adjust the shifter height until the measuring rod touches the same position.

Package Includes

• 1 × TOOPRE Shifter Measuring Adapter

Compatibility Note

This adapter is designed to work with derailleur hanger alignment tools featuring an M10 × P1 thread. It is intended for road bike drop bar shifter position adjustment.