STELLA Steel Mountain bike
The Stella Steel 29er is equally at home racing your local singletrack or decked out with bikepacking gear. The Stella is designed to be extremely compatible with a wide range of tire sizes, hub options and fork lengths. The Stella Steel and Titanium are proven race winners at marathon, XC and Ultra-race events. Stella Steel’s are now available in either 148x12 Boost or 142x12/135xQR hub spacings!
Precise handling and excellent climb-ability. The Stella overtakes ledge ups and trail features with ease.
A balanced BB drop: Positioned to bring out the rest of the geometry and give clearance to pedal through rock gardens, climb with power and stay playful.
Supple where is counts: S-Bend seat-stays, sloping top tube and bent down tube. These choices help the bike track in the rough and dampen trail vibrations.
Stiff chain-stays and strong CHUMBA Oversized Select Double Butted Tubing throughout yield large tube miters for strength and a low frame weight
Made in USA quality, built in house in Austin, TX.
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
Flawless frame miters, all tubes are heat sunk and argon purged when welded to prevent distortion and material thinning.
Stella Steel Frame or Build
Wheel Upgrade Options
If you are ordering Build kit 1, 2, or 3 please select your preferred wheelset.
Stella Frame Specs
Fork Travel: 120mm/100mm/or rigid options
Headset SHIS: ZS44 Upper/ EC44 Lower for Tapered or Straight
Suggested Stem Lengths: 50-100mm. 60-90mm is most popular
Hub Spacing: 148x12 Boost or 142x12/135x10 on request
PMW Sliding Dropout options: Geared, single speed or Rohloff, Thru axle or Geared
Max Tire Clearances: 29 x 2.6" tires or 27plus x 2.8"
Bottom Bracket: 73 English Threaded BSA
Chainring Clearance: 1x up to a 36T and 2x compatible
Seatpost: Post 31.6mm / Clamp 35mm
H20 Capacity: 3 bottles on Sizes XL, L, & M. 2 bottles on S, XS
The Stella Steel 29er is available as a frame only, frame set, complete build kits, partial builds and full custom component configurations can be quoted on request. Orders are shipped Boost 148x12 unless requested otherwise.
You can order a Stella direct from Chumba over the website, phone, in person @ our Headquarters or from an approved Chumba Dealer. We welcome calls (512) 494-4944 and emails for immediate questions.