Sidi Black X-3 Boots ::

Sidi Black X-3 Boots

The SIDI X3 Boots, formerly marketed as the Sidi X-Treme Boots, feature a hinged ankle support structure that allows for smooth fore and aft transitions but limited side to side movement. The X3 features similar protection as is found on the class-leading Sidi Crossfire 2 Boots but it foregoes the absolutely-everything-is-replaceable mantra to keep the price and more importantly the weight a little less stratospheric. If you are bombing through single track and want a lighter, less restrictive boot that provides just the right amount of tactile feedback, strap on a pair of X3 Boots!


  • Laminated Technomicro used as the base material
  • TA sole made of anti-skid rubber and can be replaced by a cobbler
  • TA sole features excellent rear brake feel
  • Nylon insole (no dangerous steel shank)
  • Removable arch support
  • Inner heat shield
  • Internal malleolus plastic guard with ergonomic closed cell foam padding internally to enhance protection of those tender small foot bones
  • Toe area covered in protective plastic
  • Rigid, shock resistant, anatomically shaped heel for maximum protection
  • Replaceable micro adjustable cam lock buckle system with memory straps
  • Lower buckle protected against impact opening by a guard
  • Cambrelle lining
  • All bolt-on parts are replaceable
  • Slim, cool non-bootie design
  • Single Flex System upper

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Sizing Information

Visit our Sidi Sizing Information page for complete size conversion info (ladies can use the chart at the bottom of the page). Sidi boots typically fit very consistently from one model to the next and this boot is no exception. We feel the size chart represents the fit very well. Width is “normal”, which is C or D in US shoe sizes.