Sendero Steel Mountain Bike

Input from our factory team and our passion for technical singletrack have led us to design a refined downcountry / trail capable hardtail. The Sendero is built to excel in the varied untamed trails most of us have access to. Inspired to unlock the rock gardens and ledge lines we find across Austin’s rugged mountain biking trails. If you go out of your way to ride the hard line, we made this bike for you. The Sendero stands out from other bikes in the category with a higher bottom bracket and steeper seat tube than many other options. The reach is optimized for precise steering and stable descents. The Sendero represents a balanced and versatile offering in the burgeoning downcountry category, or loaded up for rugged bikepacking adventures.

    • The Sendero utilizes a short 420mm chain-stay & a long reach to position the rider to stick corners and pedal efficiently while keeping the bike incredibly playful.

    • Paired to the head tube and seat tube angles the design is made to confidently huck ledges and bomb descents.

    • A balanced Bottom Bracket: Positioned to bring out the rest of the geometry and give clearance to pedal through technical rock gardens, climb with power and stay flickable.

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

    • The Sendero steel is designed to unlock technical trail features, put a smile on your face and of course to SEND IT!

    • Made in USA quality, handmade to order.

    • 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.

    • A custom bent seat tube brings together a short rear end, steep seat tube angle and maximum tire clearance.

    • Clean thoughtful cable routing w/ stainless steel braze-ons.

    • 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 Sendero mountain bike 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 - 130mm travel. 44mm offset recommended.

    • Suggested Stem Lengths: 120mm travel 40 - 70mm, 130mm travel 35 - 65mm

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

    • Hub Spacing: 148x12 Boost

    • PMW Sliding Dropout Options: Geared, SRAM Transmission, single speed or Rohloff, thru axle

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

    • Bottom Bracket: 73 English Threaded BSA

    • Chainring/Chain-line: 1x 34T oval on Boost chain-line (51/52mm)

    • Seat Post: Post 31.6mm

    • 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 Sizes XL, L, & M, 2 bottles on Size Small

    • Rack mounts: Optional customization to add mounts.

    Max Tire Clearances:

    • 29 x 2.4” (in all dropout positions)

    • 29 x 2.6” (mid dropout and rearward)

    • 29 x 2.8" tires (many fit in dropout rear position on size M, L, XL)

    • 27plus x 2.8" (in all dropout positions M, L, XL, mid-rearward on size small)

Sendero Steel Frame or Custom Build
from $1,695.00

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.

Frame price includes many finish options. Add a Fox Factory or Rockshox Ultimate fork and receive an additional $200 off your frameset or complete bike purchase. Add the bottomless Cane Creek Helm MKii Air 130mm fork and receive $100 off.

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Sendero Steel Frame Customizations
from $0.00

Frame Customizations

Custom Geometry Options include ETT and HTL adjustments, which control Stack & Reach. Or just change the HTL, add custom braze ons and more. New option: Velospec Elite Made in USA tubeset is an now available!

Customization:
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Customize Frame Finish

from $0.00

Custom Frame Colors

7 color choices are included in the base frame price. There are now also 10 other Lvl 2 and Lvl 3 colors to choose for $150-350. Or go full 2 tone cerakote for a custom look for $750. With cerakote there are hundreds of paint color options we can combine, contact for details.

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from $0.00

Custom Graphics

Choose from many decal color options

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All of our complete bikes are built with a custom selection of components. We pride ourselves on listening, understanding your riding goals & working with you to craft the perfect blend of components & customizations.
— Chumba USA | support@chumbausa.com

Sendero Steel Geometry Chart


Standover is Measured 90mm Forward of Bottom Bracket
*Custom Standover and Geometry Available in Customizations Dropdown Effective seat tube angles are calculated from average saddle heights and placements per size.

120mm Fork Measurements

29er fork, 44mm Offset, 530mm Axle to Crown

130mm Fork Measurements

29er fork, 44mm offset, 538mm Axle to Crown

With a 120mm Fork

Measurement SM MD LG XL
Effective Top Tube 596 620 645 670
Head Tube Angle 67.5° 67.5° 67.5° 67.5°
Head Tube Length 95 100 110 115
Effective Seat Tube Angle 74.6° 74.4° 74.2° 74.1°
Seat Tube Length 15.5" 16.25" 18.25" 20.25"
Chainstay Length 420-440 420-440 420-440 428-448
Bottom Bracket Drop 48 48 48 48
Wheelbase 1117-1137 1141-1161 1167-1187 1200-1220
Standover Height 29.6" 30.3" 31.75" 33"
Reach 417 439 461 484
Stack 618 623 632 637

With a 130mm Fork

Measurement SM MD LG XL
Effective Top Tube 597 621 647 672
Head Tube Angle 67.1° 67.1° 67.1° 67.1°
Head Tube Length 95 100 110 115
Effective Seat Tube Angle 74.2° 74° 73.9° 73.7°
Seat Tube Length 15.5" 16.25" 18.25" 20.25"
Chainstay Length 420-440 420-440 420-440 428-448
Bottom Bracket Drop 45 45 45 45
Wheelbase 1121-1141 1145-1165 1170-1190 1204-1224
Standover Height 29.2" 30.4" 31.8" 33.2"
Reach 413 435 457 480
Stack 621 625 635 639

Ordering

The Sendero Steel 29er / 27plus 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 Sendero 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.