The preHAG is a quick, no-disassembly way to see whether a derailleur cage is running parallel to the cassette, as a fast pre-ride check alongside Abbey's more precise HAG hanger alignment gauge.

Highlights

  • 3D-printed, lightweight design
  • Presses and flexes onto the largest cassette cog
  • No disassembly required
  • Made in Bend, Oregon, USA

A quick check, not a replacement for the HAG

The preHAG gives a reference plane to judge whether the bike looks square, but Abbey is clear it isn't meant to replace the accuracy of a full HAG hanger alignment gauge — it's an additional quick pre-ride check.

Compatibility & fit

Presses onto the largest cog of a derailleur-equipped cassette to check cage alignment.

Abbey Bike Tools doesn't publish fixed consumer warranty terms for its tools; as workshop equipment built for years of professional use, cover is against manufacturing defects under Australian Consumer Law. For warranty support, return the product to Tune Cycles and we'll manage the claim with Abbey Bike Tools' Australian distributor.
Quick visual derailleur alignment check, No disassembly needed, 3D-printed, lightweight, Complements Abbey's full HAG gauge for a precise check, Made in Bend, Oregon, USA
Tool typeQuick derailleur hanger alignment check
Material3D-printed
UsePresses onto the largest cassette cog
Country of manufactureUSA (Bend, Oregon)
SKU SCV-ABTL-PREHAG
Brand Abbey Tools
Shipping Weight 0.0500kg
Shipping Width 0.200m
Shipping Height 0.080m
Shipping Length 0.300m

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