2021 Kona Bicycle Company Blast Base XL
Build
650B/27.5 in × 2.35 in
Insights
Somewhat aggressive stack and reach vs trend of hardtail trail mtb bikes
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
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Geometry
| Stack | 622mm |
| Reach | 500mm |
| Stack to Reach Ratio | 1.24:1 |
| Seat Tube Length, C-T | 530mm |
| Top Tube Length, Effective/Horizontal Unknown | 667mm |
| Top Tube Slope | 9.8deg |
| Head Tube Angle | 68deg |
| Seat Tube Angle | 75deg |
| Head Tube Length | 140mm |
| Bottom Bracket Drop | 50mm |
| Bottom Bracket Height | 301.7mm |
| Chainstay Length | 435mm |
| Chainstay Length Horizontal | 432.1mm |
| Front-Center | 778mm |
| Front-Center Horizontal | 775.9mm |
| Wheelbase | 1208mm |
| Fork Offset/Rake | 42mm |
| Fork Length (Axle-To-Crown) | 490mm |
| Trail | 96.8mm very high |
| Mechanical Trail | 89.8mm |
| Wheel Flop | 33.6mm |
| Standover Height | 748mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 256.3mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 131.7mm |
Base Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 2.35in |
| Tire Outer Diameter | 703.4mm |
| Bike Length with Tires | 1911.4mm |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | 100mm |
| Suspension Sag | Unknown |
| Frame Material | Aluminum |
| Fork Material | N/A |
| Brake Type | Disc |
Source:https://konaworld.com/blast.cfm