2018 Kona Bicycle Company Humuhumu Base

Category
Rigid MTB
Design
Swept Back Bar, Rigid, suspension corrected
Frame
Steel
Fork
Steel
Features
Disc brake
Somewhat aggressive stack and reachvs category
Bar type unusual for category
This: Swept Back Bar
Category: Flat Bar
vs category
Somewhat aggressive stack and reachvs category
Bar type unusual for category
This: Swept Back Bar
Category: Flat Bar
vs category
Average stack and reachvs category
Bar type unusual for category
This: Swept Back Bar
Category: Flat Bar
vs category

Geometry

Small
Medium
Large
Stack
574mm
593mm
612mm
Reach
408mm
429mm
448mm
Stack to Reach Ratio
1.41:1
1.38:1
1.37:1
Seat Tube Length, C-T
406mm
457mm
508mm
Top Tube Length, Effective/Horizontal HT Top
584mm
610mm
635mm
Top Tube Slope
19.4deg
15.5deg
12deg
Head Tube Angle
70deg
70deg
70deg
Seat Tube Angle
73deg
73deg
73deg
Head Tube Length
110mm
130mm
150mm
Bottom Bracket Drop
74mm
74mm
74mm
Bottom Bracket Height
287mm
287mm
287mm
Chainstay Length
450mm
450mm
450mm
Chainstay Length Horizontal
443.9mm
443.9mm
443.9mm
Front-Center
642.4mm
669.2mm
696.1mm
Front-Center Horizontal
638.1mm
665.1mm
692.1mm
Wheelbase
1082mm
1109mm
1136mm
Fork Offset/Rake
45.2mm
44.4mm
45.4mm
Trail
83.3mm
very high
84.2mm
very high
83.1mm
very high
Mechanical Trail
78.2mm
79.1mm
78.1mm
Wheel Flop
26.8mm
27.1mm
26.7mm
Standover Height
680mm
725mm
770mm
Tire to Pedal Spindle
111.4mm
170 mm cranks
138.2mm
170 mm cranks
165.1mm
170 mm cranks
Pedal Spindle to Ground Clearance
117mm
170 mm cranks
117mm
170 mm cranks
117mm
170 mm cranks

Base Build

Small
Medium
Large
Wheel Size
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
Tire Width
50mm
50mm
50mm
Tire Outer Diameter
722mm
722mm
722mm
Bike Length with Tires
1804mm
1831mm
1858mm

Stack and Reach vs. Category Trend

Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive

The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.

Learn more about the Upright/Aggressive Scale
Category Trend
Rigid MTB
Source:https://www.jensonusa.com/Kona-Humuhumu-Bike