2021 RSD Bikes MiddleChild V2 27.5+

Design
Flat Bar, Hardtail (Front suspension)
Frame
Aluminum
Suspension
140mm fork travel
Features
Disc brake
Average stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Average stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Somewhat aggressive stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Somewhat aggressive stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry

Geometry

Small
Medium
Large
XL
Stack
610mm
619mm
619mm
629mm
Reach
411mm
448mm
465mm
489mm
Stack to Reach Ratio
1.48:1
1.38:1
1.33:1
1.29:1
Seat Tube Length, C-T
390mm
410mm
440mm
470mm
Top Tube Length, Effective/Horizontal Center
586mm
625mm
642mm
669mm
Top Tube Length, Actual C-C
550mm
586mm
604mm
631mm
Head Tube Angle
64.5deg
64.5deg
64.5deg
64.5deg
Effective Seat Tube Angle, Unknown
74deg
74deg
74deg
74deg
Head Tube Length
100mm
110mm
110mm
120mm
Bottom Bracket Drop
40mm
40mm
40mm
40mm
Bottom Bracket Height
323.1mm
323.1mm
323.1mm
323.1mm
Chainstay Length Max
430mm
430mm
430mm
430mm
Chainstay Length Horizontal
415mm
415mm
415mm
415mm
Chainstay Length Horizontal Max
428.1mm
428.1mm
428.1mm
428.1mm
Front-Center
755.1mm
772mm
789mm
802mm
Front-Center Horizontal
754mm
771mm
788mm
801mm
Wheelbase
1169mm
1186mm
1203mm
1216mm
Wheelbase Max
1184mm
1201mm
1218mm
1231mm
Fork Offset/Rake
51mm
51mm
51mm
51mm
Fork Length (Axle-To-Crown)
551mm
551mm
551mm
551mm
Trail
116.7mm
very high
116.7mm
very high
116.7mm
very high
116.7mm
very high
Mechanical Trail
105.3mm
105.3mm
105.3mm
105.3mm
Wheel Flop
45.3mm
45.3mm
45.3mm
45.3mm
Standover Height
685mm
696mm
698mm
710mm
Tire to Pedal Spindle
221.9mm
170 mm cranks
238.9mm
170 mm cranks
255.9mm
170 mm cranks
268.9mm
170 mm cranks
Pedal Spindle to Ground Clearance
153.1mm
170 mm cranks
153.1mm
170 mm cranks
153.1mm
170 mm cranks
153.1mm
170 mm cranks

27.5+ Build

Small
Medium
Large
XL
Wheel Size
650B/27.5 in
584 mm BSD
650B/27.5 in
584 mm BSD
650B/27.5 in
584 mm BSD
650B/27.5 in
584 mm BSD
Tire Width
2.8in
2.8in
2.8in
2.8in
Tire Outer Diameter
726.2mm
726.2mm
726.2mm
726.2mm
Bike Length with Tires
1895.2mm
1912.2mm
1929.2mm
1942.2mm

Published Sizing Recommendations

Height
155 cm
to
170 cm
170 cm
to
178 cm
178 cm
to
185 cm
185 cm
to
195 cm

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
Source:https://rsdbikes.com/middlechild-v2-aluminum/