2025 3T Cycling Primo2 Base M
Build
650B/27.5 in × 50 mm
Insights
Somewhat aggressive stack and reach vs trend of all-road/gravel bikes
Design deviates from other sizes of 3T Cycling Primo2
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 546mm |
| Reach | 378mm |
| Stack to Reach Ratio | 1.44:1 |
| Seat Tube Length, C-T | 490mm |
| Top Tube Length, Actual C-C | 550mm |
| Top Tube Slope | 8.5deg |
| Head Tube Angle | 71.1deg |
| Seat Tube Angle | 72.5deg |
| Head Tube Length | 125mm |
| Bottom Bracket Drop | 70mm |
| Bottom Bracket Height | 272mm |
| Chainstay Length | 415mm |
| Chainstay Length Horizontal | 409.1mm |
| Front-Center | 598mm |
| Front-Center Horizontal | 594mm |
| Wheelbase | 1003mm |
| Fork Offset/Rake | 50.1mm |
| Trail | 64.1mm mid/neutral |
| Mechanical Trail | 60.7mm |
| Wheel Flop | 19.7mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 86mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 102mm |
Base Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 50mm |
| Tire Outer Diameter | 684mm |
| Bike Length with Tires | 1687mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Unknown |
| Fork Material | Unknown |
| Brake Type | Unknown |
Source:https://us.3t.bike/collections/primo-2-wpnt