Service Blog Group Rides Login

Assos Mille GTO Bib Shorts S11


Precio normal $41000

Color
Size

Typically ships within 5-8 business days.

Assos   |   SKU: 11.10.318.18.XS  |   Option: Blackseries, XS

Recogida disponible en RA Cycles - Brooklyn

Normalmente está listo en 24 horas


Questions about this product?

* Product image may vary. Refer to the description for accurate details.

Assos Mille GTO Bib Shorts S11 Info

The Assos Mille GTO Bib Shorts S11 sit at the top of the Mille endurance line — built for riders who spend serious hours in the saddle and won't compromise on comfort to get there. GTO has always stood for luxury comfort at Assos, and this S11 generation refines the formula with a lighter bib construction, a next-generation legripper, and an insert that manages heat and moisture more effectively than its predecessor. If your rides regularly run four hours or longer, these shorts were designed with you in mind.

The primary textile is OSSIDIA, a warp-knit fabric that uses ultrathin elastic yarns to deliver gentle, fatigue-reducing compression across your large muscle groups. It's not aggressive compression — this is the Mille regularFit, calibrated for endurance comfort rather than race-spec tightness. A panel of LOSANGA at the front and crotch area complements it: ultra-elastic and highly breathable, it eliminates pressure at the contact zone and keeps airflow moving where you need it most. Both fabrics are OEKO-TEX certified and PFAS free.

The GTO S11 Insert is a twin-layer construction totaling 21mm — 11mm over 10mm — with additional support specifically under the ischial bones via the Shock-Absorb Damping System Twin. The goldenGate 2.0 attachment system anchors the insert at both front and rear so it floats with your body rather than riding against it, while side cut-outs reduce volume and friction across the pedal stroke. Two dedicated cooling systems — kraterCooler perforations at the leading edge and whirlKrater perforations distributed throughout — create omnidirectional airflow rather than just a single channel of ventilation.

Specs at a Glance

  • Series: Mille | Endurance
  • Fit: Regular (regularFit)
  • Leg length: Standard (Long version available separately, +3cm)
  • Temperature: >69.8°F — summer
  • Primary fabric: OSSIDIA — 80% Polyamide / 20% Elastane
  • Front panel: LOSANGA — 78% Polyamide / 22% Elastane
  • Insert: GTO S11 — twin-layer 11+10mm (21mm total)
  • Sizes: XS–3XL
  • Color: Blackseries
  • Made in: Bulgaria
  • Certifications: OEKO-TEX textiles, PFAS free

Design Benefits

  1. GTO S11 Insert with twin-layer damping: At 21mm total, the dual-layer construction provides sustained support under the ischial bones across long rides. The goldenGate 2.0 floating attachment keeps the insert moving with your body, not against it, eliminating the friction that builds up when an insert shifts out of position.
  2. Omnidirectional insert cooling: The kraterCooler and whirlKrater perforation systems work together to draw airflow through the insert from multiple directions, maintaining a cool, dry microclimate rather than trapping heat.
  3. INject legripper: Silicone is infused directly through the raw-cut leg opening rather than applied as a separate band. The result is lower profile, less friction against the skin, and a grip that won't degrade from UV exposure or sweat over time.
  4. rollBar bib strap construction: Borrowed from the Equipe Racing Series, the rollBar bracing design stabilizes the insert and locks it in place as your weight shifts during climbs, sprints, and cornering — preventing the insert migration that causes discomfort on long efforts.
  5. cranKio Tec hip shaping: Targeted darting at the hips removes material that would otherwise bunch and wrinkle across the front of the shorts during the pedal stroke. Fewer folds means less friction and a cleaner interface between the shorts and the saddle.

The RA Perspective

We've carried Assos for a long time, and the GTO line is what we reach for when a customer tells us they're doing multi-day tours, fondos over 100 miles, or just consistently long training days where the shorts need to hold up from start to finish without creating problems. It's not the racing option — that's the Equipe series — but for pure endurance comfort, nothing in the Mille lineup sits above it.

The insert is the story with the GTO. Twenty-one millimeters sounds like a lot, and it is, but what makes it work across long rides is the goldenGate 2.0 floating attachment and the cooling system. An insert that thick would get hot fast if it were solid foam. The kraterCooler and whirlKrater perforations keep air moving through it from multiple angles, which makes a real difference on warm days and on climbs where you're generating heat.

The INject legripper is one of those details that takes some time in the saddle to appreciate. Traditional silicone bands create a defined pressure edge against your leg — you don't notice it on short rides, but on a five-hour day it adds up. The infused design spreads that interface across a wider area and removes the hard edge entirely. Customers who've switched to GTO shorts often cite this as the thing they notice most.

At $410, these are a real investment. But they're also the shorts you buy once and stop thinking about shorts. For the rider who does serious volume, that's worth it.

Assos Mille GTO Bib Shorts S11 Size Chart

Tallas de pantalones cortos, braguitas y mallas para hombre de ASSOS

Tamaño
Tamaño de la cintura
XS
70-74 cm/27,5-29,1"
S
75-80 cm / 29,2-31,5"
METRO
81-86 cm/31,6-33,8 pulgadas
yo
87-92 cm/33,9-36,2 pulgadas
SG
93-99 cm / 36,3-39 pulgadas
Gl
100-106 cm/39,1-41,7 pulgadas
TIR
107+cm / 41,8+"

PRICE MATCH GUARANTEE

We will price match against advertised or quoted prices from other authorized dealers of the product!