2026 Antymateria Belt Base

Design
Drop Bar, Rigid, non-suspension corrected
Frame
Steel
Fork
Carbon/Composite
Features
Disc brake, Single-speed capable
Somewhat aggressive stack and reachvs category
Average stack and reachvs category
Somewhat aggressive stack and reachvs category
Somewhat aggressive stack and reachvs category

Geometry

S (49)
M (53)
L (56)
XL (59)
Stack
536mm
578mm
599mm
622mm
Reach
381mm
389mm
403mm
409mm
Stack to Reach Ratio
1.41:1
1.49:1
1.49:1
1.52:1
Seat Tube Length, C-T
490mm
530mm
560mm
590mm
Top Tube Length, Effective/Horizontal HT Top
530mm
560mm
580mm
605mm
Top Tube Slope
7.1deg
7.4deg
6.3deg
5.7deg
Head Tube Angle
71deg
72deg
72.5deg
72.5deg
Seat Tube Angle
74.5deg
73.5deg
73.5deg
73deg
Head Tube Length
110mm
150mm
170mm
195mm
Bottom Bracket Drop
71mm
71mm
71mm
71mm
Bottom Bracket Height
280mm
280mm
280mm
280mm
Chainstay Length
395mm
400mm
400mm
400mm
Chainstay Length Horizontal
388.6mm
393.7mm
393.7mm
393.7mm
Front-Center
595mm
607mm
622mm
636mm
Front-Center Horizontal
590.8mm
602.8mm
617.9mm
632mm
Wheelbase
979.3mm
996.5mm
1011.6mm
1025.7mm
Fork Offset/Rake
47mm
47mm
47mm
47mm
Fork Length, Unknown
400mm
400mm
400mm
400mm
Trail
71.2mm
high
64.6mm
mid/​neutral
61.4mm
mid/​neutral
61.4mm
mid/​neutral
Mechanical Trail
67.3mm
61.5mm
58.6mm
58.6mm
Wheel Flop
21.9mm
19mm
17.6mm
17.6mm
Tire to Pedal Spindle
74mm
170 mm cranks
86mm
170 mm cranks
101mm
170 mm cranks
115mm
170 mm cranks
Pedal Spindle to Ground Clearance
110mm
170 mm cranks
110mm
170 mm cranks
110mm
170 mm cranks
110mm
170 mm cranks

Base Build

S (49)
M (53)
L (56)
XL (59)
Wheel Size
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
Tire Width
40mm
40mm
40mm
40mm
Tire Outer Diameter
702mm
702mm
702mm
702mm
Bike Length with Tires
1681.3mm
1698.5mm
1713.6mm
1727.7mm

Stack and Reach vs. Category Trend

Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive

The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.

Learn more about the Upright/Aggressive Scale
Category Trend
All-road/Gravel
Source:https://antymateria.com/collections/framesety-ramy-i-widelce/products/rama-antymateria-pasek-2022-53cm