SOCO Steel All Road
Faster than a gravel bike, more ride possibilities than a road bike. Enter the new SOCO All road. (Thanks everyone who kept asking for this!)
The SOCO Steel is our spirited steel all-road bike. Whether you are on pavement running 700x30mm tires or fast gravel courses with a 40mm tire the SOCO’s geometry is begging you to throw down! But what good is a fast bike if it can’t get you there comfortably?
Six frame sizes 50-60cm feature specific butting profiles built of Velospec Made in USA heat treated tubing. The objective is to create a balance of power and suppleness proportional to the rider. Compared to the Terlingua gravel bike, the SOCO has more road focused angles, and a shorter wheelbase.
Like all of our bikes, the chainstay length is adjustable. This opens up more tire options and a range of ride qualities. The SOCO’s chainstay positions range from race road bike lengths to gravel lengths. You can adjust the chainstay up to 20mm to develop the ride-feel from rapid acceleration to smooth and stable.
Built of Made in USA main tubing and frame components, double butted oval chainstays and a BSA threaded bottom bracket. The SOCO can be configured with road or gravel electronic or mechanical drivetrains, 1x and 2x, or set up as a singlespeed. Framesets and builds are matched to either the ENVE AR fork or an internally routed ENVE In-Route Kit for an extra clean aesthetic. -special thanks to our dealer @BlackSaddleBikeShop for the photos of their recent SOCO Steel build in our Lilac colorway.
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The SOCO All Road is designed to perform on varied road surfaces and lighter gravel courses where a faster geometry is warranted.
Reach, head tube and seat tube angles place the rider in an effective position to ride efficiently over varied surface types.
Full custom geo is available for those seeking a custom fit.
The steel tube-set is tuned for weight savings, strength and a delicious buttery ride quality.
Compared to our SOCO SL Titanium the steel frame has similar dampening capabilities, but sits in the flexed zone a bit longer than the titanium to give that supple feel.
Size specific geometry changes fine tune the balance point for cornering and maximize fit performance.
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Handmade to order with many customization options.
Built with Velospec high performance, high strength, seamless USA steel that is designed for top-end performance and lightweight frame designs. Composed of "air-hardening" characteristics from its chemistry, this material strengthens in TIG-welded zones during its cool down. For additional strengths especially for thin wall profiles, the tubes undergo a heat treatment that raises tensile strength up to 1200 MPa which counters material fatigue and external impact.
Paragon Machine Works Stainless Steel Flanged Sliding Dropouts
PMW Tapered Head Tube for tapered forks.
PMW BSA Threaded 68mm Bottom Bracket for use with external cups.
Clean thoughtful external cable routing or custom options for internal.
Maximum tire and drivetrain clearances for a wide range of options and mud clearance.
All tubes are heat sunk and argon purged when welded to prevent distortion and material thinning.
Two bottle locations inside the frame, one bottle cage underneath the downtube, and top tube bag mounts included.
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The Soco All Road bike is designed to be extremely compatible with a wide range of tire sizes and drivetrains. Frames come with dropout inserts, rear axle and seatpost clamp.
Fork: Compatible w/ 382mm axle to crown ENVE AR fork. or 380mm ENVE In-Route Fork. Recommended in 47mm offset.
Headset S.H.I.S. EC34 Upper/EC44 Lower for Tapered 1.25”, 1.5” or Straight Forks (Custom In-Route frame head tubes are EC44/EC44)
Hub Spacing: 142x12
PMW Sliding Dropout Options: Geared, single speed, thru axle or quick release.
Rear Axle: 142x12x1.5 thread pitch (164mm total length) (comes with frame)
Bottom Bracket: T47 68mm Threaded External. (note: if ordered before July 2024 then 68 English Threaded BSA)
Seat Post: Post 27.2mm / Clamp 29.8mm (comes with frame)
Braking: Comes with flat mount 160mm PMW Dropout Inserts. Also availably in 140mm by request.
Cable Routing: Standard cable routing goes under the down tube via PMW bolt on cable guides and then onto the chain-stays. Custom internal routing and In-Route options.
H20 Capacity: 3 bottles on all sizes.
Fenders: Optional customization.
Rack mounts: Optional customization.
Chainrings/Cranks:
1x 46T round max
1x 44T oval max
2x 52x38T max
Chain-line: Road standard
Q Factor Clearances: Clears Dura Ace and Red AXS cranks.
Powermeter: We recommend SRAM AXS
Suggested Stem Lengths:
On size 50cm (50-70mm)
On size 52cm (60-90mm)
On sizes 54-56cm (70-110mm)
On sizes 58-60cm (90-130mm)
Max Tire Clearances:
700 x 30 to 700 x 40 with mud clearance to spare, ENVE forks are max 38mm for AR and 40mm for In-Route.
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The SOCO:
• Is built with a heat treated tubeset for a more road focused ride quality. It’s still smooth and connected to the course, just more responsive by comparison.
• Has a shorter chainstay length and wheelbase.
• Has a steeper head tube angle.
• When paired to 30-38mm all-road tires these attributes plant the SOCO in and out of high speed corners.
Order your frame below, or request a free quote on a complete or partial build. Each frame is handmade to order. Color choices, frame customizations and component kits can be added at anytime before production begins.
For those going for the ENVE In Route System, the deposit includes the In-Route AR Fork, ENVE Stem and Handlebar, Chris King Aeroset in your color choice, and the frame customization. After placing your order we will plan your stem and handlebar selections from the ENVE lineup. Note we only offer electronic 12 Speed Di2, AXS, or Campy EPS drivetrains with the In-Route system for ease of use.
Frame price includes many color options.
Frame Customizations
Customizations include HTL adjustments, internal routing, custom mounting points & more. Internal routing is cleanest with AXS, Di2 or singlespeed drivetrains. For custom geo see our titanium options.
Choose Frame Finish
SOCO Steel Geometry Chart
Measurements with Enve AR Series Fork. 382mm Axle to Crown Fork @ 47mm Offset. Frame is compatible with 47-50mm Offsets. Geo Customizations are availaible in the dropdown above.
Standover is measured 90mm forward of Bottom Bracket. Using a 700x30mm tire for reference.
Measurement | 50 | 52 | 54 | 56 | 58 | 60 |
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Suggested Rider | <5'3" | 5'4" - 5'7" | 5'8" - 5'10" | 5'10" - 6" | 6 - 6'1.5" | 6'2 - 6'3" |
Effective Top Tube | 518 | 530 | 545 | 565 | 583 | 603 |
Head Tube Angle | 72° | 72.5° | 73° | 73° | 73° | 73° |
Head Tube Length | 100 | 130 | 140 | 160 | 180 | 200 |
Seat Tube Angle | 74.5° | 74.5° | 74° | 73.5° | 73.5° | 73.5° |
Seat Tube Length | 465 | 500 | 515 | 530 | 545 | 575 |
Chainstay Length | 415-435 | 415-435 | 415-435 | 415-435 | 415-435 | 420-440 |
Bottom Bracket Drop | 75 | 75 | 75 | 72 | 72 | 72 |
Wheelbase | 975-995 | 984-1004 | 989-1009 | 1006-1026 | 1024-1044 | 1049-1069 |
Standover Height | 28.3" | 29.7" | 30.2" | 30.8" | 31.5" | 32.5" |
Reach | 370 | 374 | 381 | 391 | 404 | 418 |
Stack | 528 | 558 | 569 | 585 | 604 | 624 | Stack+Headset Upper | 544 | 574 | 585 | 601 | 620 | 632 | Front Center | 572 | 581 | 586 | 602 | 620 | 640 |
Ordering
The SOCO All Road is available as a frame only, frame set, in complete build kits, and partial builds. Custom component configurations can be quoted on request here: Chumba Custom
You can order a SOCO direct from Chumba over the website using the drop-downs on this page, over the phone, in person @ our Headquarters or from an approved Chumba Dealer. We welcome calls (512) 494-4944 and emails for immediate questions.
Titanium & Steel Gravel, Mountain & All Road Bikes | Chumba
Chumba's roots were forged over 20 years ago in trail inspired designs and downhill championships. Building on that heritage we continue to make world class bikes. Chumba's commitment to USA production means the same people who build, design and test your frame are the ones spec'ing components, assembling, packaging your new ride. We have devoted ourselves to making your ride experience the best it can be!
Chumba Bikes | 1113 Regal Row, STE B, Austin, TX, 78748, United States