2021 Kona Bicycle Company Fire Mountain Base XS

Build

650B/27.5 in × 2.25 in

Insights

Very aggressive stack and reach vs trend of hardtail trail mtb bikes
Design deviates from other sizes of Kona Bicycle Company Fire Mountain
Suspension sag unknown
Geometry may mis-represent actual riding geometry

Stack and Reach vs. Category Trend
View all sizes

Geometry

Stack
556mm
Reach
400mm
Stack to Reach Ratio
1.39:1
Seat Tube Length, Unknown
331mm
Top Tube Length, Effective/Horizontal Unknown
549mm
Top Tube Slope
25.8deg
Head Tube Angle
67.5deg
Seat Tube Angle
74deg
Head Tube Length
100mm
Bottom Bracket Drop
30mm
Bottom Bracket Height
319.2mm
Chainstay Length
425mm
Chainstay Length Horizontal
423.9mm
Front-Center
662mm
Front-Center Horizontal
661.1mm
Wheelbase
1085mm
Fork Offset/Rake
40mm
Fork Length, Unknown
483mm
Trail
101.3mm
very high
Mechanical Trail
93.6mm
Wheel Flop
35.8mm
Standover Height
639.9mm
Tire to Pedal Spindle Distance
With 170 mm cranks
142.9mm
Pedal Spindle to Ground Clearance
With 170 mm cranks
149.2mm

Base Build

Wheel Size
650B, 27.5 inch (584mm BSD)
Tire Width
2.25in
Tire Outer Diameter
698.3mm
Bike Length with Tires
1783.3mm
Suspension Type
Hardtail (Front suspension)
Bar Type
Flat Bar
Fork Travel
100mm
Suspension Sag
Unknown
Frame Material
Aluminum
Fork Material
Aluminum
Brake Type
Disc
Source:https://konaworld.com/fire_mountain.cfm