2025 Thomson Bike Products Tomahawk Base S
Build
700C/29 in × 42 mm
Insights
Average stack and reach vs trend of all-road/gravel bikes
Design deviates from other sizes of Thomson Bike Products Tomahawk
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 553mm |
| Reach | 374mm |
| Stack to Reach Ratio | 1.48:1 |
| Seat Tube Length, Unknown | 490mm |
| Seat Tube Length, Effective Unknown | 535mm |
| Top Tube Slope | 9.2deg |
| Head Tube Angle | 70deg |
| Seat Tube Angle | 74deg |
| Head Tube Length | 120mm |
| Bottom Bracket Drop | 80mm |
| Bottom Bracket Height | 273mm |
| Chainstay Length | 435mm |
| Chainstay Length Horizontal | 427.6mm |
| Front-Center | 607mm |
| Front-Center Horizontal | 601.4mm |
| Wheelbase | 1029mm |
| Fork Offset/Rake | 52mm |
| Fork Length (Axle-To-Crown) | 392mm |
| Trail | 73.1mm high |
| Mechanical Trail | 68.7mm |
| Wheel Flop | 23.5mm |
| Standover Height | 770mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 84mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 103mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 42mm |
| Tire Outer Diameter | 706mm |
| Bike Length with Tires | 1735mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Steel |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Source:https://bikethomson.com/product/the-tomahawk-frameset/