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Castelli Free Aero RC Bibshort

Castelli Free Aero RC Bibshort
  • Color: Black
  • Color: Black
  • Color: Dark Gray
  • Color: Dark Gray
  • Color: Savile Blue
  • Color: Savile Blue
Size: Select size
Please select options Unavailable


Innovative evolution

The Free Aero RC Bibshort is our top race short, which also means that it's insanely comfortable even if you never pin on a number.

It's fair to say that we've been working on this short for the past 15 years. That's how long it's been since the original free aero race bibshort was first introduced, initially as our top-of-the-line race short. Since then it has won three Tours de France, three Gri d'Italia, one Vuelta, and San Remo, but it also became the best-selling product in the history of Castelli because, simply put, this is the short that does everything well.

The concept is quite simple: start with the best pad we know how to make, surround it with a supportive short with good muscle compression, and then remove everything else that's not absolutely necessary.

You feel free thanks to the reduced number of panels and the reduced number of seams. In fact, the short portion has just 5 panels compared to 10 in the previous generation.

You feel free because of further refinements to the Progetto X2 air seamless seat pad. The two densities of foam plus the gel pads provide progressive damping, while the separate skincare layer is soft and stretchy to move with your skin.

You feel free thanks to the most minimal bibs you've ever seen in a short, including open-weave straps for maximum airflow. But we reinforced the yoke so the straps stay in place and made the mesh back narrow for coverage that is minimal yet just enough to hold the shorts in place. And the bib elegantly frames a convenient pocket at the center back.

You feel free because this is the first high-end short that doesn't need any sort of gripper or elastic at the end of the leg to keep the leg in place. Getting this right meant 28 prototypes and our most extensive test program ever, and it results in the most comfortable leg ending we've ever made.

The Forza 2 fabric has 32% lycra with a high modulus for exceptional muscle support and just the right amount of compression. There's reflective piping on the back. And all logos are either stitched or embossed for durability.

- High-compression 215g Forza 2 fabric with 32% lycra content provides exceptional muscle support and compression
- Progetto X2 air seamless seat pad is soft against the skin but well padded for long-distance comfort
- Minimalist bib straps allow maximum airflow, while a reinforced yoke keeps the straps flat over the shoulders
- Rear mesh pocket
- 5-panel construction for reduced seams and less chafing
- Sublimation-printed graphic and logos that will never peel, crack, or fade
- Reflective piping on back of legs
- Soft waistband with raw-cut edge panels for extra stretch and comfort
- Raw-cut leg ending engineered to stay put without silicone grippers

X-Small Small Medium Large X-Large XX-Large XXX-Large
cm 90 94 98 102 107 112 117
in 35.5 37 38.5 40 42 44 46
cm 81 82 83 84 85 86 87
in 31.8 32.2 32.8 33.2 33.5 33.8 34.2

Part Numbers

Option UPC MPN Store SKU
Dark Gray / X-Small 08050949605318 L4522000030-1 FRE28478686S
Dark Gray / Small 08050949605325 L4522000030-2 FRE2791026S
Dark Gray / Medium 08050949605332 L4522000030-3 FRE27229636M
Dark Gray / Large 08050949605349 L4522000030-4 FRE27299698L
Dark Gray / X-Large 08050949605356 L4522000030-5 FRE28552533L
Dark Gray / XX-Large 08050949605363 L4522000030-6 FRE29903608L
Dark Gray / XXX-Large 08050949605370 L4522000030-7 FRE29330395L
Black / X-Small 08050949605257 L4522000010-1 FRE25538658S
Black / Small 08050949605264 L4522000010-2 FRE24901990S
Black / Medium 08050949578148 L4522000010-3 FRE24150533M
Black / Large 08050949605271 L4522000010-4 FRE24491364L
Black / X-Large 08050949605288 L4522000010-5 FRE25797831L
Black / XX-Large 08050949605295 L4522000010-6 FRE26479814L
Black / XXX-Large 08050949605301 L4522000010-7 FRE26481936L
Savile Blue / X-Small 08050949605387 L4522000414-1 FRE30274230S
Savile Blue / Small 08050949605394 L4522000414-2 FRE29675604S
Savile Blue / Medium 08050949605400 L4522000414-3 FRE29727775M
Savile Blue / Large 08050949605417 L4522000414-4 FRE2929645L
Savile Blue / X-Large 08050949605424 L4522000414-5 FRE3055687L
Savile Blue / XX-Large 08050949605431 L4522000414-6 FRE31892540L
Savile Blue / XXX-Large 08050949605448 L4522000414-7 FRE31738452L