XCX Seat Tube guides will accommodate chainlines from 50- 53mm

For more information on determining your chainline, please see Chainline explained

Seat tube mount guides are offered in high and low mount configurations to match frame design, check with your frame manufacturer on which your frame uses

XCX ST guides use a shim-cam to adjust chainline

The XCX ST will fit 28.6mm, 31.8mm or 34.9mm seat tube diameters. Start by selecting the correct shim-cam for your frame

Open the upper slider by removing the bolt

Slip the shim-cam onto the frame

clamp the guide over the shim cam and lightly tighten the fixing bolt

Close the slider, lightly tighten the bolt

Sight down the front of the guide and chainring, adjust the slider until the seam in the slider is centered over the chainring by turning the shim-cam

Be sure the slider is in line with the chainring (line up the seams on the slider with the ring)

Finally, adjust the guide vertically such that the slider is ~3mm over the chainring

The guide can move both on the frame by sliding on the seat tube, as well as via the up and down adjustment in the slider

Be sure the guide is parallel with the chainring

Tighten the slider bolt to 0.5nm or just snug (do not over tighten)

Tighten the clamp bolt to 5nm