2018 Chumba Cycles Ursa Major Base SM

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
607mm
Reach
406mm
Stack to Reach Ratio
1.5:1
Seat Tube Length, C-T
387.3mm
Top Tube Length, Effective/Horizontal Center
595mm
Top Tube Slope
24.5deg
Head Tube Angle
69deg
Seat Tube Angle
72.75deg
Head Tube Length
128mm
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
671.7mm
Front-Center Horizontal
669.9mm
Wheelbase
1106mm
Wheelbase Max
1126mm
Fork Offset/Rake
46.7mm
Fork Length (Axle-To-Crown)
483mm
Trail
106mm
very high
Mechanical Trail
99mm
Wheel Flop
35.5mm
Standover Height
660.4mm
Tire to Pedal Spindle Distance
With 170 mm cranks
95.2mm
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
1919mm
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/