There are two options for mounting the LG1+ chainguide

Directly to ISCG or ISCG05 tabs

Or under a threaded bottom bracket using the ISCG05 adapter included with the ISCG05 version of the guide

If your bike does not have ISCG or ISCG05 tabs or a threaded bottom bracket there is no way to mount the guide to your frame

Your cranks must not have inner chaining tabs

Inner chainring tabs will interfere with the backplate of the guide

This is true of most single ring chainguides, not just ours

For either mounting, start with the cranks off of the bike

If you are going to use the BB mount adapter, remove your bottom bracket cup and install the adapter, replacing the 2.5mm spacer that is closest to the frame. If there is only one spacer, replace it.

If there is no spacer, contact your crank and bottom bracket manufacturer

Be sure the flat side of the adapter is facing outward

Remove all grease from the mounting face of the adapter; this will help to keep it from spinning on impact

Clock the adapter such that the upper bolt hole is in the one o’clock position

Tighten the BB to manufacturers torque spec

Now that everyone has some form of ISCG tabs, lets install the guide

Start by removing the upper and lower sliders by loosening the 4mm hex bolts

Fit the guide over the BB cup and onto the ISCG tabs

For ISCGold tabs you will need to remove the BB to fit the backplate over the BB in most cases

Install the upper ISCG fixing bolt, just hand tighten for now

Reinstall cranks to manufacturer’s specs

Reinstall the guide’s upper slider

Position the slider with the chainring size window showing the proper chainring size

Torque slider bolt to 0.9nm

Using the provided ISCG washers between the backplate and the ISCG tabs (or adapter), position the guide such that the seam on the upper slider is centered on the chainring

The same number of spacers should be used under each of the three mounting bolts

If using more than 2mm of spacers, use the longer bolts

Reinstall the lower slider and adjust it into the proper chainring size position using the marks on the back of the bashguard, torque to 0.9nm

Clock the guide such that the upper slider is at 11-12 o’clock position

Remember that if you have a longer travel bike the guide will rotate slightly as the bike run through its travel, you can see on this V10 that we have the guide closer to 12 o'clock to protect the lower roller

On bikes with dropped chainstays such as the Intense 951, frame interference may force the guide into incorrect clocking, this will make the lower roller more prone to impacts

Tighten ISCG bolts to 6nm

It is possible to loosen the direct mount bashguard and adjust the angle between the upper and lower sliders as needed by the frame design

Most frames will use the Regular position

Bikes with dropped chainstays may need the Wide position (such as the Intense in step 9)

Hardtails and bikes with elevated chainstays can use the Narrow position to provide more chain tension as needed