2021 Kona Bicycle Company Blast Base
- Category
- Hardtail Trail MTB
- Design
- Flat Bar, Hardtail (Front suspension)
- Frame
- Aluminum
- Suspension
- 100mm fork travel
- Features
- Disc brake
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
S | M | L | XL | |
Stack | 585mm | 599mm | 608mm | 622mm |
Reach | 415mm | 440mm | 465mm | 500mm |
Stack to Reach Ratio | 1.41:1 | 1.36:1 | 1.31:1 | 1.24:1 |
Seat Tube Length, C-T | 370mm | 420mm | 470mm | 530mm |
Top Tube Length, Effective/Horizontal Unknown | 572mm | 600mm | 628mm | 667mm |
Top Tube Slope | 24deg | 19.4deg | 14.7deg | 9.8deg |
Head Tube Angle | 68deg | 68deg | 68deg | 68deg |
Seat Tube Angle | 75deg | 75deg | 75deg | 75deg |
Head Tube Length | 100mm | 115mm | 125mm | 140mm |
Bottom Bracket Drop | 50mm | 50mm | 50mm | 50mm |
Bottom Bracket Height | 301.7mm | 301.7mm | 301.7mm | 301.7mm |
Chainstay Length | 435mm | 435mm | 435mm | 435mm |
Chainstay Length Horizontal | 432.1mm | 432.1mm | 432.1mm | 432.1mm |
Front-Center | 678mm | 709mm | 737mm | 778mm |
Front-Center Horizontal | 676.9mm | 706.9mm | 735.9mm | 775.9mm |
Wheelbase | 1109mm | 1139mm | 1168mm | 1208mm |
Fork Offset/Rake | 42mm | 42mm | 42mm | 42mm |
Fork Length (Axle-To-Crown) | 490mm | 490mm | 490mm | 490mm |
Trail | 96.8mm very high | 96.8mm very high | 96.8mm very high | 96.8mm very high |
Mechanical Trail | 89.8mm | 89.8mm | 89.8mm | 89.8mm |
Wheel Flop | 33.6mm | 33.6mm | 33.6mm | 33.6mm |
Standover Height | 710mm | 719mm | 725mm | 748mm |
Tire to Pedal Spindle | 156.3mm 170 mm cranks | 187.3mm 170 mm cranks | 215.3mm 170 mm cranks | 256.3mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 131.7mm 170 mm cranks | 131.7mm 170 mm cranks | 131.7mm 170 mm cranks | 131.7mm 170 mm cranks |
Base Build
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 |
Tire Width | 2.35in | 2.35in | 2.35in | 2.35in |
Tire Outer Diameter | 703.4mm | 703.4mm | 703.4mm | 703.4mm |
Bike Length with Tires | 1812.4mm | 1842.4mm | 1871.4mm | 1911.4mm |
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/blast.cfm