The Park Tool WAG-4 Professional Wheel Alignment Gauge, click to enlarge
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Item # WAG-4

/ Tools / Wheel & Spoke

Professional Wheel Alignment Gauge

For a bicycle wheel to perform properly and safely, it is important for the rim to be centered between the locknuts of the hub, or “dished." The WAG-4 is an accurate and versatile alignment gauge that provides a measurement of the dish in order to determine if adjustment is necessary. Compatible with virtually all road, mountain, BMX, and cruiser wheels.

The sliding spacer blocks of the WAG-4 offset the tool from the rim, allowing for accurate measurement even when the tire is still mounted on the wheel.

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WAG-4 Features

  • Measures centering on rims that fit 16" to 29" tires
  • Measures centering on rims with ETRTO or ISO sizing of 305–630
  • Compatible with any hub width


Parts & Accessories


Replacement Parts

WAG-4 Professional Wheel Alignment Gauge