2018 Chumba Cycles Ursa Major Base XL

Build

26 in × 5 in

Insights

Average stack and reach vs trend of rigid fatbike bikes

Stack and Reach vs. Category Trend
View all sizes

Geometry

Stack
638mm
Reach
452mm
Stack to Reach Ratio
1.41:1
Seat Tube Length, C-T
539.8mm
Top Tube Length, Effective/Horizontal Center
650mm
Top Tube Slope
11.3deg
Head Tube Angle
69.5deg
Seat Tube Angle
72.75deg
Head Tube Length
158mm
Bottom Bracket Drop
50mm
Bottom Bracket Height
356.5mm
Chainstay Length
439mm
Chainstay Length Max
459mm
Chainstay Length Horizontal
436.1mm
Chainstay Length Horizontal Max
456.3mm
Front-Center
723.6mm
Front-Center Horizontal
721.9mm
Wheelbase
1158mm
Wheelbase Max
1178mm
Fork Offset/Rake
46.9mm
Fork Length (Axle-To-Crown)
483mm
Trail
102mm
very high
Mechanical Trail
95.5mm
Wheel Flop
33.5mm
Standover Height
749.3mm
Tire to Pedal Spindle Distance
With 170 mm cranks
147.1mm
Pedal Spindle to Ground Clearance
With 170 mm cranks
186.5mm

Base Build

Wheel Size
26 inch (559mm BSD)
Tire Width
5in
Tire Outer Diameter
813mm
Bike Length with Tires
1971mm
Suspension Type
Rigid, suspension corrected
Bar Type
Flat Bar
Frame Material
Titanium
Fork Material
Unknown
Brake Type
Disc
Source:https://www.chumbausa.com/ursa-major-titanium-fatbike/