with thicker threads that better withstand the grind of daily intervals while still transitioning to the speed of the weekly crit series
dirt and grime are kept safely on the outside to provide smooth
Keep your Brompton safe while you take a break
Safeguard your bike with M Part Security Skewer
Constructed from padded water-repellent toughened nylon
2027 Sirrus X - 2.0 Colour:Gloss Tangerine / Shadow Silver Frost Reflective with thicker threads that betterOffering an unprecedented combination of comfort, efficiency, and nimble handling, the Sirrus X excels on pavement, dirt, and any terrain in between. SMOOTH, COMFORTABLE, AND EFFICIENT: Sirrus X provides the smoothest ride in its class. With bigger, confidence inspiring tires, a slightly more upright riding position, and a super intuitive one by drivetrain.