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Castelli Mens Sorpasso RoS Bibknicker
Castelli Mens Sorpasso RoS Bibknicker
Castelli Mens Sorpasso RoS Bibknicker
Castelli Mens Sorpasso RoS Bibknicker
Castelli Mens Sorpasso RoS Bibknicker
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Castelli Mens Sorpasso RoS Bibknicker
Castelli Mens Sorpasso RoS Bibknicker
Castelli Mens Sorpasso RoS Bibknicker
Castelli Mens Sorpasso RoS Bibknicker
Castelli Mens Sorpasso RoS Bibknicker

Men's Sorpasso RoS Bibknicker

Mfg PartNum:
  (3 customer reviews)
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Take the chill out of your winter with the Castelli Men's Sorpasso RoS Bibknicker.

The name of this tight, Sorpasso, means "overtaking" in Italian. That's what Castelli envisioned with the Castelli Men's Sorpasso RoS Bibknicker — to make it a bit faster, better, more comfortable. Made to be technical equipment, making a ride in the widest range of winter conditions possible for a cyclist with any amount of experience on the bike.

The main part of the tight is constructed with Nano Flex 3G fabric, the third generation of impressive nanotechnology fabric treatment that adds a high level of water repellency without affecting the breathability, stretch, or warmth of the fabric. You get a highly flexible, compressive fit that moves with you, focusing on warmth and comfort without making any compromises. To spice things up, a few panels of the Nano Flex Xtra Dry fabric were added to provide extra wind protection in the front panel and over the thighs, as well as in the back for extra protection from road spray. But it's not only about the fabrics — anatomical patterning gives a bend at the knee and the hip, while the seamless bib straps lie flat and securely keep everything in place. Featuring a generously padded Progetto X2 Air seamless seat pad to make long rides more comfortable.

With multiple reflective panels to keep you visible, ride more confidently than ever in the Castelli Men's Sorpasso RoS Bibknicker. As the go-to tight for a full winter's riding, never suffer though long hours through cold nights ever again.


  • Nano Flex 3G fabric for our best mix of warmth, stretchy compression, softness and water repellency
  • Nano Flex Xtra Dry fabric panel on upper front and thighs for extra warmth, and on back to protect from road spray
  • Anatomic cut to hips and knee
  • Reflective inserts for maximum visibility from behind
  • Lie-flat elastic bib straps
  • Progetto X2 Air seamless pad for long hours in the saddle
  • 0°C - 12°C (32°F - 54°F)

  • Free Exchanges: This product qualifies for free exchanges within the first 60 days after order. We'll cover the shipping both ways for US customers if you need a different size and/or color of this product. Returned product must be in new condition with all labels and packaging. Free exchanges apply only for product in stock or available for backorder.

    B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.


    Leg Type: 3/4 Length 


    Style Type: Bibtights 

    Black - Small

    Mfg PartNum: M20523010-2 

    Black - Medium

    Mfg PartNum: M20523010-3 

    Black - Large

    Mfg PartNum: M20523010-4 

    Black - X-Large

    Mfg PartNum: M20523010-5 

    Black - 2X-Large

    Mfg PartNum: M20523010-6 

    Ordered by Most Relevant First
    5 stars
    4 stars
    3 stars
    2 stars
    1 stars
    Excellent Knicker, let down by the pad.
    by CH
    Cycling Enthusiast
    Vancouver, WA
    3 of 3 customers found this review helpful.

    I'm a huge fan of knickers. I have owned several pair from several different companies. When my go-to pair for 40-50 degrees, finally wore out, I was on the hunt for a new pair.

    I was looking at these and the Giordana FR-C Pro and was told by CS that the Castelli should be warmer. I bought both and while I loved the fit and pad of the Giordana, I could tell they were not going to be as warm.

    I'm 5'9" and 160lbs and got a Medium.

    The fit is very good. The length goes to just below my calf, which is what a proper knicker should do. They are warm and windproof in the right areas. I rode these on a really foggy day and I was getting moisture build up on the outside of the legs, but stayed dry. The straps are excellent. The fabrics are excellent quality. I never felt clammy.

    The bummer is the pad. While Castelli calls it their top of the line, I prefer the KISS AIR 2 pad. The Progetto X2 pad in these, is not as comfortable. It kinda just flattens out and you feel your seat more. It also feels a little forward and I have to pull the tights from the back occasionally. I know Castelli designs some of their clothing to be race fit and thus worn in a more aggressive, bent over position, so maybe that's what's going on here.

    I have the Nano Tutto Nano kinckers and while they are not as warm, the KISS AIR 2 pad is much more comfortable.

    Over all these are a great knicker for Mid-weight warmth. Fit great, but the pad keeps these from being excellent for me.

    Reviewed 11/22/2020
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    Tight fitting somewhat warm bibknicker - Advise you size to match Free Aero Bibs
    by matter
    Cycling Enthusiast
    San Diego

    I wear an XXL size in Castelli Men's Free Aero Race 4 Bibshort. I am 5ft 11in, 190 lbs.

    I wanted to try some Castelli Bibknickers so I ordered initially a Castelli Men's Tutto Nano Bibknicker in the XXL size.

    The Tutto Nano felt too heavy and thick compared with the Free Aero shorts. So I returned the Tutto Nano's and tried the Sorpasso RoS Bibknicker in a smaller size (XL). Mistake: They are extremely tight fitting (like the Free Aero Bibs). I thought that i would like the fit like the Free Areos, but the fit in the XL size is too tight to allow circulation in my legs. As a result, they do not provide warmth. This is primarily a sizing problem so I would just advise to buy the same size as your Free Aeros if you have a pair.

    Reviewed 3/4/2021
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    Fits well and keeps me warm
    by Sheriff
    Cycling Enthusiast
    Spokane, WA

    I'm 6'3" tall, 195 lbs, 32" waist and wear a 33" jean length. These bibs fit great! They do a good job keeping the chill off between 40 and 55 degrees. Also from 55 to 65 degrees in temp they are not too hot. Good fall spring riding choice piece of clothing.

    Reviewed 2/15/2021
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