2021 Kona Bicycle Company Fire Mountain Base
- Category
- Hardtail Trail MTB
- Design
- Flat Bar, Hardtail (Front suspension)
- Frame
- Aluminum
- Fork
- Aluminum
- Suspension
- 100mm fork travel
- Features
- Disc brake
Very aggressive stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Somewhat aggressive stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Somewhat aggressive stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Somewhat aggressive stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Somewhat aggressive stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry |
Geometry
XS | S | M | L | XL | |
Stack | 556mm | 585mm | 599mm | 608mm | 622mm |
Reach | 400mm | 415mm | 440mm | 465mm | 500mm |
Stack to Reach Ratio | 1.39:1 | 1.41:1 | 1.36:1 | 1.31:1 | 1.24:1 |
Seat Tube Length, Unknown | 331mm | 370mm | 420mm | 470mm | 530mm |
Top Tube Length, Effective/Horizontal Unknown | 549mm | 572mm | 600mm | 628mm | 667mm |
Top Tube Slope | 25.8deg | 23.9deg | 19.4deg | 14.7deg | 9.9deg |
Head Tube Angle | 67.5deg | 68deg | 68deg | 68deg | 68deg |
Seat Tube Angle | 74deg | 74deg | 74deg | 74deg | 74deg |
Head Tube Length | 100mm | 100mm | 115mm | 125mm | 140mm |
Bottom Bracket Drop | 30mm | 50mm | 50mm | 50mm | 50mm |
Bottom Bracket Height | 319.3mm | 299.3mm | 299.3mm | 299.3mm | 299.3mm |
Chainstay Length | 425mm | 435mm | 435mm | 435mm | 435mm |
Chainstay Length Horizontal | 423.9mm | 432.1mm | 432.1mm | 432.1mm | 432.1mm |
Front-Center | 662mm | 678mm | 709mm | 737mm | 778mm |
Front-Center Horizontal | 661.1mm | 676.9mm | 706.9mm | 735.9mm | 775.9mm |
Wheelbase | 1085mm | 1109mm | 1139mm | 1168mm | 1208mm |
Fork Offset/Rake | 40mm | 42mm | 42mm | 42mm | 42mm |
Fork Length, Unknown | 483mm | 490mm | 490mm | 490mm | 490mm |
Trail | 101.4mm very high | 95.8mm very high | 95.8mm very high | 95.8mm very high | 95.8mm very high |
Mechanical Trail | 93.7mm | 88.8mm | 88.8mm | 88.8mm | 88.8mm |
Wheel Flop | 35.8mm | 33.3mm | 33.3mm | 33.3mm | 33.3mm |
Standover Height | 640mm | 655mm | 700mm | 740mm | 790mm |
Tire to Pedal Spindle | 142.8mm 170 mm cranks | 158.8mm 170 mm cranks | 189.8mm 170 mm cranks | 217.8mm 170 mm cranks | 258.8mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 149.3mm 170 mm cranks | 129.3mm 170 mm cranks | 129.3mm 170 mm cranks | 129.3mm 170 mm cranks | 129.3mm 170 mm cranks |
Base Build
XS | S | M | L | XL | |
Wheel Size | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD |
Tire Width | 2.25in | 2.25in | 2.25in | 2.25in | 2.25in |
Tire Outer Diameter | 698.5mm | 698.5mm | 698.5mm | 698.5mm | 698.5mm |
Bike Length with Tires | 1783.5mm | 1807.5mm | 1837.5mm | 1866.5mm | 1906.5mm |
Published Sizing Recommendations
Height | — | — | — | — | 185 cm to 196 cm |
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 ScaleCategory Trend
Hardtail Trail MTBSource:https://konaworld.com/fire_mountain.cfm