Castelli Custom Free Aero RC Kit Bib Shorts

The Free Aero RC Kit Bib Shorts are a customisable version of our best race shorts, built for exceptional comfort and freedom. Based around our pro-level seat pad, they’re made for long-distance riding at speed, with supportive material and all non-essential features removed.

These shorts have been steadily improved until, fifteen years on from their original format, leg endings that can stay put without grips have resulted from 28 prototypes and lots of testing.

Other improvements have included a reduction in seams, through the use of five panels instead of 10, making the seat pad even softer and keeping the airy mesh bib straps flat, without bulk, by adding a reinforced yoke.

Made for added stretch and compression through lighter material on the inner leg, with a soft yet elastic raw-cut waistband, these shorts are a favourite with the pros because they do everything well.

  • High performance bib tights for cool to cold weather training
  • Printed ThermoFlex fabric on thighs and back panel
  • Front centre portion and back of legs from soft, warm and water repellent Nano Flex 3G
  • Front of knees to ankles cosy, stretch woven and splash resistant Nano Flex
  • Built around our best seat pad, the Progetto X2 Air Seamless
  • Minimalist, low bulk bib straps let plenty of air circulate
  • Raw-cut ankles, so no zippers are necessary
  • With rear pocket at bottom of bib straps and reflective tabs at back of leg
  • Weighs 279g
  • Made for temperatures

Why Castelli Custom

Find out why our Servizio Corse Castelli Custom programme is the right choice for your club, team or group.

How it works

Get your custom-manufactured Castelli Kit in just 7 easy steps.

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Size guides

Get the perfect performance fit with more size options and expert sizing help.