STELLA Steel XC 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! 


Ride Quality

  • A balanced BB drop: Positioned to bring out the rest of the geometry and give clearance to pedal through technical rock gardens, climb with power and stay playful on the trail.

  • Supple where is counts: S-Bend seatstays, sloping top tube and bent down tube. These choices help the bike track in the rough and dampen trail vibrations.

  • Stiff chainstays and strong CHUMBA Oversized Select Double Butted Tubing throughout yield large tube miters for strength and a low frame weight of only 5 lbs.

Build Quality

  • Made in house/USA quality

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

  • 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.

  • Clean thoughtful cable routing

from 1,350.00

Stella Steel Frame or Build

Frame only/ Build/ or Custom Component Frame Reservation?:
Custom Color Lvl:
Add to Build
Stella Steel Wheel Upgrade Options

If you are ordering Build kit 1, 2, or 3 please select your preferred wheelset.

Add to Build

Add custom braze ons and more

Add to Build
Chumba Stella Steel Boost2.jpg

Stella Frame Specs

  • 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"

  • Headset SHIS: ZS44 Upper/ EC44 Lower for Tapered or Straight

  • Fork Travel: 120mm/100mm/or rigid options

  • Seatpost: Post 31.6mm / Clamp 35mm

  • Bottom Bracket: 73 English Threaded BSA

  • Chainring Clearance: 1x up to a 36T and 2x compatible

  • 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.