2026 RAL Exposure Base

Category
Rigid MTB
Design
Flat Bar, Rigid, non-suspension corrected
Very aggressive stack and reachvs category
Very aggressive stack and reachvs category
Very aggressive stack and reachvs category

Geometry

Small
Medium
Large
Stack
519.9mm
524.6mm
534mm
Reach
391.2mm
427.3mm
440.8mm
Stack to Reach Ratio
1.33:1
1.23:1
1.21:1
Seat Tube Length, C-T
410mm
480mm
510mm
Top Tube Length, Effective/Horizontal Center
550mm
587.7mm
604.1mm
Top Tube Slope
14deg
6.6deg
4.5deg
Head Tube Angle
71deg
71deg
71deg
Seat Tube Angle
73deg
73deg
73deg
Head Tube Length
100mm
105mm
115mm
Bottom Bracket Drop
44mm
44mm
44mm
Bottom Bracket Height
289.6mm
237.6mm
237.6mm
Chainstay Length
415mm
415mm
415mm
Chainstay Length Horizontal
412.7mm
412.7mm
412.7mm
Front-Center
604.3mm
641.9mm
658.6mm
Front-Center Horizontal
602.7mm
640.4mm
657.1mm
Wheelbase
1015.3mm
1053mm
1069.8mm
Fork Offset/Rake
45mm
45mm
45mm
Fork Length, Unknown
408mm
408mm
408mm
Trail
67.3mm
high
49.4mm
mid/​neutral
49.4mm
mid/​neutral
Mechanical Trail
63.6mm
46.7mm
46.7mm
Wheel Flop
20.7mm
15.2mm
15.2mm
Standover Height
738mm
765mm
797mm
Tire to Pedal Spindle
100.7mm
170 mm cranks
190.3mm
170 mm cranks
207mm
170 mm cranks
Pedal Spindle to Ground Clearance
119.6mm
170 mm cranks
67.6mm
170 mm cranks
67.6mm
170 mm cranks

Base Build

Small
Medium
Large
Wheel Size
26 in
559 mm BSD
26 in
559 mm BSD
26 in
559 mm BSD
Tire Width
2.13in
2.1mm
2.1mm
Tire Outer Diameter
667.2mm
563.3mm
563.3mm
Bike Length with Tires
1682.5mm
1616.3mm
1633mm

Published Sizing Recommendations

Height
0 ft 0.17 in
to
14 ft 2 in
to
0 ft 0.18 in
to

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
Rigid MTB