UDH vs Full Mount - What's for you?

Before fitting your Tutto-in-Uno thru-axle, check which type of rear derailleur mounting your bike has. The two systems need different screws.

Step 1 - Identify your mounting type

UDH (Universal Derailleur Hanger): the frame has a removable hanger that the derailleur bolts to.

Full Mount: the derailleur attaches directly to the frame, with no separate hanger.

To find out more about UDH and Full Mount, visit this link - SRAM: UDH vs Full Mount

Step 2 - Choose the correct screw

UDH hanger: use the Tutto-in-Uno UDH screw with left-hand thread.

Full Mount (UDH Transmission Direct Mount): use the Tutto-in-Uno UDH screw with right-hand thread.

Both screws are made from hard aluminum alloy EN AW-7075 and are designed to be used with the Tutto-in-Uno thru-axle.

Step 3 - Fit the thru-axle in 4 steps

Remove the original thru-axle from the bicycle.
Insert the Tutto-in-Uno thru-axle through the frame and hub.
From the opposite side, insert the tensioning screw through the frame and hub. The screw-in depth must be at least 12 mm, or the centring shaft must be visible along its entire length.
Tighten the tensioning screw to 15 to 18 Nm using the spanner provided.

Installation should be carried out by a qualified person or bicycle repair shop.

Step 4 - Check before every ride

Step 5 - Warning: risk of accident

Improper assembly can result in material damage or accidents. Please note:

Only fit accessories that are suitable for thru-axle mounting
Observe the maximum permissible load for the bicycle and trailer
Do not continue to use damaged axles
Do not use on bicycles without thru-axle mounting, or on bicycles that are not approved for trailer use

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