2025 Tunk Hike-Use Base 59
Build
650B/27.5 in × 42 mm
Insights
Design deviates from other sizes of Tunk Hike-Use
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 595mm |
| Reach | 382mm |
| Stack to Reach Ratio | 1.56:1 |
| Seat Tube Length, C-T | 616mm |
| Seat Tube Length, C-C | 586mm |
| Top Tube Length, Effective/Horizontal Center | 569mm |
| Top Tube Length, Actual C-C | 569mm |
| Top Tube Slope | 0deg |
| Head Tube Angle | 73deg |
| Seat Tube Angle | 72.5deg |
| Head Tube Length | 187mm |
| Bottom Bracket Drop | 64mm |
| Bottom Bracket Height | 270mm |
| Chainstay Length | 440mm |
| Chainstay Length Horizontal | 435.3mm |
| Front-Center | 615mm |
| Front-Center Horizontal | 611.7mm |
| Wheelbase | 1047mm |
| Fork Offset/Rake | 65mm |
| Fork Length (Axle-To-Crown) | 375mm |
| Trail | 34.1mm low |
| Mechanical Trail | 32.7mm |
| Wheel Flop | 9.6mm |
| Standover Height | 840mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 111mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 100mm |
Base Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 42mm |
| Tire Outer Diameter | 668mm |
| Bike Length with Tires | 1715mm |
| Crank Length | 170mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Steel |
| Fork Material | Steel |
| Brake Type | Rim |
Source:designer input