Chain Gap Adjustment Gauge

$3.5 $7 In stock

The Chain Gap Adjustment Gauge from SRAM is a practical, nearly indispensable tool for setting up SRAM derailleurs. Designed for precise chain gap measurement, it helps ensure your drivetrain is adjusted correctly for reliable shifting performance.

Compatible with all SRAM eTap AXS cassettes ranging from 26T to 44T.
Available in multiple configurations to suit your specific drivetrain setup, including versions for 26-44t, 50t, and EX1 applications.
Built as a component-specific tool intended for accurate derailleur setup.
A valuable addition to any mechanic's chain tool kit for maintaining optimal drivetrain function.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.5 / 5 · 4 reviews)

George W. ★★★★★ Nov 5, 2026

Setting up a rear derailleur used to be pure trial and error for me, but this little gauge gave me an exact chain gap measurement on the first try. It clips on simply and the markings are easy to read even in dim garage light. Shifting has been crisp ever since.

Hazel ★★★★★ Nov 3, 2026

Setting the chain gap used to be pure guesswork until I picked this up, and now the derailleur shifts clean through every gear. The gauge itself feels sturdy enough to toss in the toolbox and forget about until the next drivetrain swap.

Ellie ★★★★☆ Nov 4, 2026

The gauge takes the guesswork out of chain gap measurement, and the markings are easy to read even in dim garage light. Only gripe is that it's sized for one drivetrain family, so it's useless on my other bike.