Cosmic Stallion GRX
Performance Gravel All-Star
The ultimate gravel bike for chasing PRs and podiums on race day, and all the training rides that get you there.

Lively, Spirited, Stable
Perfectly capable of flying fast down the tarmac, the Cosmic Stallion really shines when things get rough. Quick, efficient, and designed for gravel riding and racing, we’re yet to find a bike that does a better job at soaking up road chatter and jealous stares.
Performance

A.C.E. Tubing
Painstakingly crafted from our proprietary heat-treated, air-hardened, and custom-extruded A.C.E. steel tubing, there’s nothing else like it on Earth. Learn more about A.C.E. Tubing

WHISKY NO.9 CX Disc 12 Tapered Fork
Lightweight with generous tire clearance and precise handling capabilities, Whisky’s gorgeous carbon fork accommodates 12mm thru-axles and flat-mount disc brakes.

Tire Clearance
Built with versatility in mind, it accommodates tire sizes 700 x 42mm or 650b x 47mm (both with or without fenders).

Di2 Routing Options
Outfitted to make your dreams of accurate and effortless electronic shifting a hassle-free reality.

Rear Rack and Fender Mounts
Ready to run mudguards with the ability to mount a bag or two in the back to keep you comfy on those long rides.
Signature Details
Our mission is to bring beauty back to production bicycles. This means investing in custom touches that elevate the whole. We devote time and resources to signature details that turn heads and signify high-quality craftsmanship. These elements tell a cohesive visual story and form a distinct silhouette so that even if your unique bike were stripped down to bare metal, it would still be instantly identifiable as an All-City bicycle. Learn more
Custom Dropouts
All-City’s signature engraved logo shines with classic style.

Signature Seat Collar
Train your eyes on that timeless and tasteful brazed-on seat collar, elegantly designed around the All-City logo.

Reinforced Bottle Bosses
Beautiful stars reinforce the bottle bosses and our obsessive attention to detail.

Liquid Paint and E.D. Coat
Our topnotch wet paint finish sparkles with depth and luster, while an E.D. coating protects against rust. Learn more about our paint

Pantographed Bottom Bracket
Upside-down and inside-out, AC’s signature style is stamped into the steel.
Accolades
“The Cosmic Stallion fills a nice gap of price, practicality, and hitting the high points of modern tech to make it a legitimate contender for the race-minded.”
"Love this bike. Everything about it is well made and thought out. Absolutely flawless design. Climbs and stays on the lines like no other. Descent is so comfortable, especially with the 38mm Cannonballs! Wow! Love how the bike handles and responds."
“10/5 Would Buy 10,000 More Times. 20 years of riding under my belt, one year of being sad it was not all done on this bike. This is a very special bike.”
FIND A RETAILER

* Manufacturer's suggested retail price may not include additional shipping or preparation charges. Please contact your local dealer for a quote. COMPLETE MSRP $2,899 USD | $3,899 CAD *
Cosmic Stallion GRX - Buy Online
We cannot confirm inventory in your vicinity. Please reach out to one of the listed retailers in your area for more information on this model or consider expanding your search area.
Bike Shop to Home Delivery
Because we want to make it easier to support your local All-City retailer during this unusual time, participating dealers can now ship All-City bikes and frames directly to your door. Find your local All-City dealer using our Dealer Locator. After that, all you've gotta do is head over to their website or call 'em up on the phone to place your order, and your bike or frame will be delivered to you.
SPECS & GEO
- Frame + All-City A.C.E. Air-Hardened, Custom, Extruded steel
- Fork + Whisky No.9 CX Disc 12 Tapered
- Seatpost Clamp + All-City Signature Brazed-On
- Crankset + FSA Omega MegaExo AGX+ 46/30t
- Bottom Bracket + FSA MegaExo
- Front Derailleur + Shimano GRX 810
- Rear Derailleur + Shimano GRX 810
- Cassette + Shimano 105, 11-32t
- Chain + Shimano HG 601
- Headset + Cane Creek 40 Series
- Brakes + Shimano GRX 600
- Rotors + Shimano RT26, 160 front and rear
- Shifters + Shimano GRX 600
- Stem + Whisky No.7 Black Alloy Stem; ±6° Rise
- Handlebar + Whisky No.7 Black 12° Flair Drop Bar
- Grip + All-City Super-Cush with Locking Alloy All-City End Plugs
- Saddle + All-City Gonzo
- Seatpost + Whisky No.7 Black Alloy Seatpost
- Front Hub + All-City Go-Devil 28h
- Rear Hub + All-City Go-Devil 28h
- Rims + WTB ST Light i23 28h
- Tires + Teravail Cannonball Tire, 700c x 38mm, Tubeless Ready, 60 tpi Light and Supple

Size | 46cm | 49cm | 52cm | 55cm | 58cm | 61cm |
---|---|---|---|---|---|---|
Head Tube Angle | 70 | 71 | 71.3 | 72.2 | 72.2 | 72.2 |
Seat Tube Angle) | 75 | 74.5 | 73.7 | 73.5 | 73.0 | 72.5 |
Top Tube Length) | 510 | 530 | 545 | 560 | 580 | 610 |
Seat Tube Length | 450 | 480 | 510 | 540 | 570 | 600 |
Chainstay Length | 436 | 441 | 446 | 446 | 446 | 446 |
Bottom Bracket Drop | 73 | 73 | 73 | 73 | 73 | 73 |
Fork Offset | 45 | 45 | 45 | 45 | 45 | 45 |
Total Fork Length | 395 | 395 | 395 | 395 | 395 | 395 |
Head Tube Length | 95 | 110 | 124 | 149 | 173 | 198 |
Standover | 744 | 767 | 790 | 818 | 844 | 872 |
Wheelbase | 1005 | 1017 | 1028 | 1032 | 1047 | 1071 |
Stack | 518 | 536 | 550 | 577 | 600 | 624 |
Reach | 371 | 381 | 384 | 389 | 397 | 413 |
Handlebar Width | 400 | 420 | 420 | 440 | 460 | 460 |
Stem Length | 60 | 70 | 80 | 90 | 100 | 110 |
Crank Arm Length | 165 | 165 | 170 | 170 | 175 | 175 |
- Frame Construction + All-City A.C.E. Air-Hardened, Custom, Extruded steel
- Fork Construction + Whisky No.9 thru-axle, carbon blades, tapered carbon steerer tube, flat-mount disc brake
- Derailleur Hanger + Replaceable derailleur hanger; '687' (FS2339)
- Rear Hub Spacing + 142 x 12mm; thru-axle; Ø12 x 167mm , TP=1.5, TL=12
- Front Hub Spacing + 100 x 12mm; thru-axle; Ø12 x 120mm , TP=1.5, TL=12
- Rear Brake + Flat Mount, 140mm to 160mm
- Front Brake + Flat Mount
- Headtube + 1 1/8" - 1 1/2" tapered
- Steerer Tube + Ø28.6mm
- Crown Race + Ø40mm
- Stock Headset Upper (S.H.I.S) + EC34
- Stock Headset Lower (S.H.I.S) + EC44
- Seat Collar + All-City Signature Brazed-On
- Seatpost + 27.2mm
- Front Derailleur (Clamp) + 28.6 Band Clamp
- Max Chainring + 1x: 52t max // 2x: 53/39t max // 3x: 52/39/30t max
- Bottom Bracket + 68mm English Threaded
- Tire Clearance - Frame + 700c x 42mm / 650b x 47mm
- Tire Clearance - Fork + 700c x 42mm / 650b x 50mm
- Rigid Fork Spec + 395mm Axle to Crown; 45mm offset
- Bottle Mounts Frame + Thee mounts, two inside front triangle, one under downtube
- Rack Mounts Frame + Yes
- Rack Mounts Fork + Yes
- Fender Mounts Frame + Yes
- Fender Mounts Fork + Yes
- Other Features + E.D. coated for durability and rust prevention
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