Fits most road and gravel bikes**

With the lowest rolling resistance in the G-One range

making it ideal for riders seeking competitive advantage on demanding terrain

it combines breathability and insulation while delivering reliable performance on every ride

Other Without caliper

4223 mechanism pro jersey black Size:XS Fits most road and gravelThe 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.