With the lowest rolling resistance in the G-One range

making it ideal for riders seeking competitive advantage on demanding terrain

Other Without caliper

Fits most road and gravel bikes**

4223 mechanism pro jersey black Size:XS With the lowest rolling resistanceThe Mechanism Pro Jersey combines structurally mapped fabrics with a speed optimised construction to deliver a true pro level fit. Every detail is precisely calibrated for performance and a second skin feel, from the custom developed 4D stretch woven fabrics to the refined finishes and construction. The result is a jersey that reflects our pursuit of a new calibre of professional cycling apparel.