2026 Antymateria Belt Base S (49)
Build
700C/29 in × 40 mm
Insights
Somewhat aggressive stack and reach vs trend of all-road/gravel bikes
Design deviates from other sizes of Antymateria Belt
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 536mm |
| Reach | 381mm |
| Stack to Reach Ratio | 1.41:1 |
| Seat Tube Length, C-T | 490mm |
| Top Tube Length, Effective/Horizontal HT Top | 530mm |
| Top Tube Slope | 7.1deg |
| Head Tube Angle | 71deg |
| Seat Tube Angle | 74.5deg |
| Head Tube Length | 110mm |
| Bottom Bracket Drop | 71mm |
| Bottom Bracket Height | 280mm |
| Chainstay Length | 395mm |
| Chainstay Length Horizontal | 388.6mm |
| Front-Center | 595mm |
| Front-Center Horizontal | 590.8mm |
| Wheelbase | 979.3mm |
| Fork Offset/Rake | 47mm |
| Fork Length, Unknown | 400mm |
| Trail | 71.2mm high |
| Mechanical Trail | 67.3mm |
| Wheel Flop | 21.9mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 74mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 110mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 40mm |
| Tire Outer Diameter | 702mm |
| Bike Length with Tires | 1681.3mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Steel |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
| Features | Single-speed capable |
Source:https://antymateria.com/collections/framesety-ramy-i-widelce/products/rama-antymateria-pasek-2022-53cm