Here is support/clamp for the rear brake tube for the Yamaha DTR 125, designed from the original model with only minor changes.

averages: 20 mm between centers, holes with 5 mm.only tested on the Yamaha DTR, but it can work on other motorcycles,just confirm the measurements

PRINT : 

 layer height : 0.2 

 infill : 30 %

 top/bottom : 3 layers

 support : yes 

NOTE: i recommend you print this in PETG or ASA to last longer