Surly Big Dummy Rail Collars Bags |Featuring our proven ergonomics and

|Featuring our proven ergonomics and award-winning 1:1® Actuation

It has plenty of braze-ons so you can customize how you secure your cargo…or just light your bike up like the space station

Now touch the top of your head

it is thin enough to fit without bunching and light enough to practically disappear when you put it on

we recommend using TACX  Dynamic Assembly Compound with carbon fibre components

Surly Big Dummy Rail Collars Bags |Featuring our proven ergonomics andSURLY BIG DUMMY RAIL COLLARS These tiny little pieces of hardware are designed to vastly improve the overall performance of your Surly Big Dummy. These simple clamps are designed to strengthen the interface between Surly Dummy Rails and the lower longtail frame. Cool huh? Please see the attached resource below for more info instructions.