Description
The Win Wing MTB is here — now available in a special Sour Bicycles design. Built around the proven principle of tangential coverage, this latest version has been completely re‑engineered to suit modern trail bikes, wider tires, and the unique geometries of today’s frames.
For bikepacking and long‑distance detours, the Win Wing has been a trusted companion for over five years. With the new Sour edition, you get the same trail‑ready performance paired with a look that matches the personality of your bike.
A length‑adjustable and reinforced wishbone, optimized for aggressive MTB tread patterns, works together with a larger and stiffer blade to deliver maximum protection — no matter how rough, wet, or muddy the ride gets. From technical singletrack to remote gravel loops, the Win Wing MTB keeps your back clean while staying incredibly lightweight and secure.
Note: The mounting straps fit seat stay circumferences up to 12 cm.
Full‑length backside rider protection – from the knee and all the way up
Ultralight – just 114 g
Compatible with all MTB wheel sizes from 26″ to 29″
Mounts in seconds, no tools required
Works with tires up to 3.0″ (76 mm)


