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AssosEquipe RSR Bib Shorts S9 - Men's


Item # AAS00B4

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Item # AAS00B4

Equipe RSR Bib Shorts S9

Assos is well renowned for creating some of the most comfortable cycling shorts in the business and when the time came for a redesign, it scrutinized its current designs, analyzed its pro rider feedback, and spent hours upon hours of research and development when engineering a new platform. Enter the new Equipe RSR Bib Shorts S9, cycling bibs that Assos claim to be the lightest, most comfortable race-spec bib shorts to ever leave its factory. Assos' primary goals were to improve bib stabilization and ridding the chamois of unnecessary bulk and by doing so, creating shorts that mostly disappear, letting you go about your riding without noticing your apparel.

Assos engineers its products to excel in the toughest racing environments, working with professionals to hone its garments. No one puts in the saddle time across such a wide variety of conditions like the pros and the feedback it receives as well as analyzing the wear and tear of the garment helps to influence its new designs. Assos isn't afraid to innovate and knew it needed to think outside the box, using new fabrics and designs if it wanted to achieve its goals.

As we stated above, one of the principal objectives with the new shorts was improving the chamois and the rider's interaction with it. To ensure comfort, Assos worked tirelessly on the insert, something that would have received praised and warranted a new model just on its own. The new chamois, constructed of Balsat, was developed as a race-specific design and is an advancement over its already comfortable Equipe EVO platform. Assos was able to cut the bulk by using a new superAir microShock foam that works in unison with its 3D waffle construction and kraterCooler system to increase airflow. Add that to the already proven goldenGate technology that removes the stitching at the center for a free-floating chamois and you have a new level of comfort like nothing you've experienced before.

We should pause here and explain the differences between the RS version of the short and the RSR we have here. The RSR doesn't get the rollBar used in the RS version saving weight and focusing on the holding properties of the material itself to help stabilize the shorts. In order to do so, Assos created a new material combining the ideal blend of compressive support, durability, softness, and low weight. This fabric, dubbed Type.701kompressor, is the worthy successor to its already highly praised S7 Campionissimo kompressor material. This complex woven material is made of incredibly thin yarn with enormous elasticity, in a weave that is nearly friction-free providing comfort, while supporting hard-working muscles.

The new materials are one part of Assos' A-Lock Engineering, the other part is an actual stabilizing system using details to keep the shorts locked to the rider while keeping the insert in place. These shorts use an all-new two-panel pattern whereas the previous S7 generation used four panels. A primary “butterfly” panel fully wraps the legs with a consistent, uniform hold while reducing weight and joins at the rear to form the ergoBox structure, a square pattern construction that effectively frames the insert in the back, boxing it in for added stability. This design prevents the insert from slipping and in combination with the Type.701 material, achieves the best "clickfit" Assos has ever created.

The Carbon Xbib straps are also redesigned using a single section of elastic material that's folded over on itself forming a supportive A-frame with tuned, short vertical stretch and calibrated elasticity. Its built with a lay flat, antibacterial carbon weave that wicks moisture and at the front, a more flexible material and wider spaced straps reduce any chance of irritation.

  • Assos' new standard of racing shorts with long-mile comfort
  • Type.701kompressor compressive fabric supports, wicks, and breathes
  • Signature "click" fit hugs the body like never before
  • goldenGate S9 chamois helps reduce friction against skin
  • ergoBox construction frames the insert for added stability.
  • Carbon Xbib straps form a supportive A-frame with tuned elasticity
  • Butterfly Pattern panel on the lower back and legs delivers a uniform hold
  • Assos raises the bar as the short to have among discerning cyclists

Tech Specs
MaterialType.701kompressor (68% nylon, 32% elastane)
ChamoisEquipe S9
BibCarbon Xbib
Recommended Useroad cycling
Manufacturer Warrantylimited


Men's Apparel
Leg, Knee, Arm Warmers0III 

5ft 3in - 5ft 7in

(160 - 170cm)

5ft 7in - 5ft 9in

(168 - 175cm)

5ft 8in - 5ft 11in

(170 - 179cm)

5ft 11in - 6ft 2in

(180 - 187cm)

6ft 1in - 6ft 2in

(185 - 189cm)

6ft 3in+



< 132lb

(< 60kg)

< 154lb

(< 70kg)

< 165lb

(< 75kg)

< 176lb

(< 80kg)

< 187lb

(< 85kg)

< 198lb

(< 90lb)

> 198lb

(> 90lb)


27.5 - 29.1in

(70 - 74cm)

29.2 - 31.5in

(75 - 80cm)

31.6 - 33.8in

(81 - 86cm)

33.8 - 36.2in

(87 - 92cm)

36.3 - 38.9in

(93 - 99cm)

39 - 41.7in

(100 - 106cm)


















Note: Assos clothing has a very slimming, anatomic cut, if your build is less than slim or if you like your fit looser, go up in size.

How to Measure:
For best results, take measurements over your underwear.
Measure around the widest part of your chest.
Bend to the side and measure around the place where your waist bends, keeping the tape a bit loose.

What do you think about this product?


>Rating: 5

Slippery slope to financial insecurity

I've put it through the wringer
True to size
Size Bought
6` 0"
175 lbs

Don't buy these bibs. They will 100% make you never want to look at any other option again and you may end up broker than ever. Are they worth the extra money over the RS version? Yes. Is the RS version bad? No, the RS is still a 5-star bib, but these are just so otherworldly. Hundreds of miles on these and my RS bibs and both are fantastic choices. The only way I can compare them is to say that the RS bibs are the best bibs money can buy, while the RSR version is the best second skin you're fortunate enough to own. I use my RS bibs for my everyday riding, but the RSRs are on reserve for the extra long or extra fast days.

>Rating: 5

not looking back

I've put it through the wringer
True to size

What is great about RSR is weight , chaimos the way they it locks in , feel and comfort. Looks sharp ! Race cut fit but comfy for lot of applications.

>Rating: 5

Best Bibs On the Market!

True to size
Size Bought
5` 11"
165 lbs

I highly recommend this bib. Yes. It maybe pricey but this is a situation where ya get what ya pay for! I race in Gran Fondos of 80 to 125 miles and this bib feels great! I’m hoping they’ll make S9 tights for fall. Totally worth it!

Agreed best pair of bibs ever! If you can spend the $$$ get em you will not be dissapointed


Can anyone tell me where these are made? I have numerous pair of Assos pieces and their newer Bonka gloves are now made in China and to keep it very brief they are horrible! Wondering if they're moving all manufacturing over there and if we can expect the same...

As far as I know, nearly everything is made in their own factory in Romania.

No these are made in Europe and they are the best bibs ever. They feel like a second skin you will not notice them while riding.

Assos is not made in China like Rapha. They have factories in Europe like Lithuania , Romania etc. Reason for that is not because they want to keep the labor cost down , is because Eastern Europeans are really good at it.