URSA 29plus Backcountry

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URSA 29plus Backcountry

3,195.00

The ultimate all terrain bikepacking rig, the URSA BC is ready for nearly any trail condition you can encounter on your next big adventure. 

Component Specs Below : Geometry in Photo Gallery

Size:
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Frame/Fork:

  • CHUMBA Frame: URSA 29plus 4130 - Double Butted Chromoly (Made in USA)
  • Rear Axle: Paragon Machine Works Stainless Steel Sliding Dropouts w/157x12 Thru-Axle (Made in USA)
  • Bottle Cage Bolt Set: 5mm Stainless
  • Fork: Surly Steel Fork w/Rack and Cargo Mounts or MRP Rock Solid 490 Fork Carbon 100x15 

Brakes:

  • Front Brake: TRP Spyke Alloy Mechanical Disc Brake Caliper Black 
  • Rear Brake: TRP Spyke Alloy Mechanical Disc Brake Caliper Black
  • Brake Levers: TRP ML930 Linear Pull Brake Levers Black
  • Front Brake Rotor:  TRP 180mm Rotor
  • Front Brake Adaptor: Shimano 180 PM
  • Rear Brake Rotor: TRP 180mm Rotor
  • Rear Brake Adaptor: Shimano 180 PM
  • Drivetrain:

  • Bottom Bracket: RaceFace Team X-Type English Thread BSA 83
  • Crankset: RaceFace Chester 170mm-175mm
  • Chainrings: RaceFace Turbine 2x10, 36/22T on DM 104 BCD spider
  • Cassette: Shimano XT M780 11-36T XT 10-spd 
  • Chain: Shimano CN-HG95 SUPER NARROW HG 10spd
  • Shifters: Shimano SL-M780, Shift Lever Set, 2/3x10-Speed, w/O.G.D,
  • Cables and Housing: SP-41 Housing and Stainless Cable
  • Rear Derailleur: Shimano XT 10-spd Mid Shadow Plus Clutch

Steering/Seating:

  • Headset: Cane Creek 110 Series ZS44/EC44 Tapered
  • Headset Spacers:  Cane Creek Alloy
  • Handlebar: Thomson Titanium 31.8mmx730mm, 12° sweep
  • Stem: Thomson X4 Black (we'll call you to select size)
  • Grips: RaceFace Strafe Black Lock-on
  • Saddle: RaceFace Aeffect Black
  • Seatpost: Thomson Elite 31.6mm x 410mm, no-offset

Wheels/Tires

  • Front Wheel: Sun Ringle Duroc 40 or 50 100x15, comes tubeless installed
  • Rear Wheel: Sun Ringle Duroc 40 or 50 157x12 Super Boost Plus, comes tubeless installed
  • Front Tire: Maxxis Chronicle 29plusx3.0" EXO TR
  • Rear Tire: Maxxis Chronicle 29plusx3.0" EXO TR

Bikepacking Kit/Bagset

  • Frame Bag: Wanderlust Gear Divide Frame Bag w/ Daisy Chain Mounting System
  • Option to add additional Wanderlust Gear bikepacking bags (call or email)

Specs

  • Oversized 44mm Head tube for tapered or straight steerer tubes
  • 83mm Bottom Bracket
  • ISCG-05 for skid plates
  • 31.6 Seatpost Size
  • CHUMBA Custom half yoke chainstay and bridges
  • Room for three bottle on all sizes
  • Mounts for Cargo Cages
  • Rear Rack Mounts
  • 157 x 12 Super Boost Plus Thru-Axle Rear
  • Stainless Steel Sliding Dropouts

The URSA BC edition is ready for your biggest, longest, most out in the boonies adventure. 

Frame Features:

  • 29 x 3.0" midfat wheelsize (best blend of comfort, traction, speed, and roll over)
  • CHUMBA USA Select Steel Frame (Oversized and Double Butted 4130 tubes) Made in USA
  • PMW Stainless Steel Sliding Dropouts w/replaceable hanger and dropout inserts
  • SuperBoost Plus/DH spec chainline (Industry leading chain, tire clearance and shifting performance)
  • 83mm BB (comfortable for all day riding and giving more clearance frame bags)
  • Versatile geometry (a careful balance between trail ripper and all day bikepacking, get to camp and drop the bags, hit the singletrack!)
  • Cargo cage mount in main triangle and under down tube
  • Brazed on water bottle bosses and rack mounts 
  • Loads of tire clearance (room for mud and snow to go, fits wider 3.0" tire casings with ease.)
  • Room for three bottle on all sizes
  • Oversized 44mm Head tube for tapered or straight steerer tubes
  • Custom yoke with integrated ISCG-05 mount for skid plates