Chumba Bikes Introduces Yaupon Gravel Bike
Austin-based Chumba Bikes today announces the all-new Yaupon, a so-called ATB or All Terrain Bicycle that looks to be capable for everything from sweet singletrack, multi-day bikepacking or a massive gravel loop. The Yaupon, pronounced (yo-pawn), offers the possibility of introducing a 120mm tire clearances up to 29 x 2.6” in its mid and rear dropout positions. According to Chumba they have created “A true dirt drop MTB” with a slacker head tube angle and longer reach that were designed for use with a shorter stem & wider bars.
Yaupon key Build features and specs
Fork Travel: Optimized for 120mm travel w/ 44mm offset and rigid forks 483mm-490mm axle to crown (A2C)
Best suspensions forks: Fox Stepcast 34 120 or Standard 34 120, Rockshox SID 120 or Pike 120
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, Single Speed or Rohloff
Rear Axle: 148x12x1.5 thread pitch (170mm total length) (comes with frame)
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"
Bottom Bracket: 73 English Threaded BSA
Chainring/Chain-line: 1x 38T oval 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
Rack mounts: Optional customization to mounts or we offer Old Man Mountain racks, who makes a USA made thru-axle mounted rack that can hold up to 70lbs, it is more secure for the rack and goods and it better protects the frame then a traditionally mounted rack. We can provide these with the bike if interested.
The Chumba Yaupon is made in USA and built in house in Austin, TX. Chumba offers a wide range of frame customizations and color options that can be viewed on their website. The Yaupon Steel 29er / 27plus is available as a frame only, frame set, in complete build kits, and partial builds. Framesets start at $1895 USD.
Learn more at ChumbaUSA.com
The ENVE Hex in 700x52 might be the most underrated tire on the market, and after 750 miles across multiple states, we offer our full review on ENVE’s gravel tire.