2026 TSUNAMI Bicycle GA04 Base S (47)
Build
700C/29 in × 45 mm
Insights
Average stack and reach vs trend of all-road/gravel bikes
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 551mm |
| Reach | 373mm |
| Stack to Reach Ratio | 1.48:1 |
| Seat Tube Length, C-TTT | 470mm |
| Top Tube Length, Effective/Horizontal Unknown | 527mm |
| Top Tube Slope | 8.9deg |
| Head Tube Angle | 71deg |
| Seat Tube Angle | 74.5deg |
| Head Tube Length | 130mm |
| Bottom Bracket Drop | 70mm |
| Bottom Bracket Height | 286mm |
| Chainstay Length | 425mm |
| Chainstay Length Horizontal | 419.2mm |
| Front-Center | 595.9mm |
| Front-Center Horizontal | 591.8mm |
| Wheelbase | 1011mm |
| Fork Offset/Rake | 50.3mm |
| Trail | 69.4mm high |
| Mechanical Trail | 65.6mm |
| Wheel Flop | 21.4mm |
| Standover Height | 759mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 69.9mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 116mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 45mm |
| Tire Outer Diameter | 712mm |
| Bike Length with Tires | 1723mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Aluminum |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Source:tsunamibicycle.com