Derailleur Hanger Alignment Gauge In Stock Now

Description

Park Tool Derailleur Hanger Alignment Gauge (DAG-2.2). A measuring and straightening tool for your derailleur hanger. Sure, it’s a scary looking instrument, but don’t get psyched out–it’s not hard to use and it may solve your shifting problem!

Features include:

• Gauge bar made of heavy gauge, chrome plated steel
• Adjusts to fit 20" to 29"+ wheels
• Clearance and reach to fit more frame/hanger combos including low clearance thru-axle derailleur hangers than previous model
• Compatible with virtually all derailleur-equipped bicycles including Shimano:registered: Direct Mount hangers
• 16 inches long–bet you’re glad you know that now :-)

Also Known As: DAG

Often Used With: Bicycle Repair Stand

Similar To: Nothing on planet Earth.

Intended Uses

Designed to both measure and straighten misaligned derailleur hangers solving a high percentage of shifting problems. The good folks at Velorution can confirm–a lot of derailleur issues come down to misaligned derailleur hangers!

For a quick video intro to this tool and what it is used for, check out this Park Tool ‘promotional’ piece.

Special Instructions

The “ball plunger”--see diagram–seems like it’s apt to accidentally fall out and get lost. It doesn’t take much to loosen or tighten it against the shaft–be aware ;-)

Tool Resources

Diagram

Image Source: Park Tool Instruction Manual

Instructions & Resources

• PDF: Instruction Manual
• Web Copy/Video: “Rear Derailleur Hanger Alignment” by Park Tool. Guess what? Your wheel does not have to be true to fix this alignment. See why in this set of instructions!