• The Yaupon steel is at home tackling technical trails, but foremost it’s meant for the longest rides in the most comfortable and fun way possible!

• A slack 68º head tube finds the flow in rough terrain.

• A steep seat tube angle and other geo numbers combine to keep the front end planted under difficult climbs.

• A balanced bottom bracket is positioned to bring out the rest of the geometry and plant the bike in corners whether seated or floating.

• The bike is spirited out of the saddle and rather huckable, but the comfort of the design allows for a long day seated.

• The wheelbase offers great maneuverability picking lines on the trail and threading through tight corners.

• Smooth and predictable compliance from Chumba Oversized Select Double Butted Tubing, built of the best tubing available.

• Made in USA quality, handmade to order.

• Seat-stays are custom diameter to each frame size for the smoothest ride.

• Chumba Oversized Select Double Butted Tubing and PMW stainless steel sliding dropouts, mean this bike will exceed your expectations and provide years of reliable trail service. Oversized tubing yields larger tube miters for strength.

• Clean thoughtful cable routing w/ stainless steel braze-ons. Including stainless top tube bag mounts & cargo cage mounts under down tube.

• Flawless frame miters, all tubes are heat sunk and argon purged when welded to prevent distortion and material thinning.

• Machined head tube for tapered or straight forks.

• Many frame customizations are available.

Now available in two tubesets! Our Chumba Oversized Select Double Butted Tubeset has always been trusted for trail riding, bikepacking. Prized for its value, dent resistance & balance of compliance/strength.

For those looking for a more race performance tubeset we offer a Velospec Heat Treated (USA made) Tubeset. Available in the frame customizations as an add-on. For lighter frame weight and increased performance characteristics. The tubing is air hardened at weld zones which increases its fatigue strength and resistance to external forces. While heat treatment adds strength, these tubes offer increased elongation % for a compliant ride. The stuff of magic? We think so.

The Yaupon steel is designed to be extremely compatible with a wide range of tire sizes, hub options and fork lengths. Frames come with dropout inserts, rear axle and seatpost clamp.

• Fork Travel: Optimized for 120mm travel w/ 44mm offset and rigid forks 483mm-490mm axle to crown (A2C)

• Best 120mm suspensions forks: Fox Stepcast 34 120 or Standard 34 120, Rockshox SID 120 or Pike 120

• Best 100mm suspension forks: Fox Stepcast 34 100mm

• Best rigid fork: Enve MTN Boost Carbon

• Suggested Stem Lengths: 35 - 80mm

• Headset S.H.I.S.: ZS44 Upper/ EC44 Lower for 1.5” Tapered or 1 1/8” Straight Forks

• Hub Spacing: 148x12 Boost

• Drivetrain / PMW Sliding Dropout Options: Geared, SRAM Transmission, Single Speed or Rohloff

• Rear Axle: 148x12x1.5 thread pitch (170mm total length) (comes with frame)

• Bottom Bracket: T47 73mm Threaded External. (note: if ordered before July 2024 then 73 English Threaded BSA)

• Chainring/Chain-line: 1x 38T on Boost chain-line (51/52mm)

• Seat Post: Post 31.6mm or for 27.2mm use a Cane Creek Alloy Shim

• Seat Post Clamp: 35mm (comes w/ frame)

• Dropper Port: Stainless internal dropper port on non-driveside w/ rubber housing guide

• Cable Routing: Standard cable routing goes under the down tube via PMW bolt on cable guides and then onto the chain-stays

• H20 Capacity: 3 bottles on all sizes.

• Cargo Mounts: Includes Top Tube mounts and under down tube cargo mounts for 3 bolt style cages

• Framebag mounts: Downtube comes ready for velcro free mounting, additional mounts are optional

• Rack mounts: Optional customization to add mounts

Max Tire Clearances:

• 29 x 2.4” (in all dropout positions M, L, XL, mid-rearward on size small)

• 29 x 2.6” (mid dropout and rearward)

• 27plus x 2.8” mid and rearward