2019 Stanton Bikes Switchback 631 Next Gen UK Base

Design
Flat Bar, Hardtail (Front suspension)
Frame
Steel
Suspension
140mm fork travel, 25% sag
Features
Disc brake

Geometry

16.5" (REGULAR)
16.5" (LONG)
18" (REGULAR)
18" (LONG)
Stack
610mm
610mm
619.5mm
619.5mm
Reach
403mm
428mm
425mm
444mm
Stack to Reach Ratio
1.51:1
1.43:1
1.46:1
1.4:1
Seat Tube Length, C-T
419mm
419mm
457mm
457mm
Top Tube Length, Effective/Horizontal HT Top
586mm
611mm
606mm
630mm
Top Tube Length, Actual C-C
562.5mm
585.2mm
578mm
600mm
Top Tube Slope
21.7deg
20.8deg
18.1deg
17.5deg
Head Tube Angle
65.5deg
65.5deg
65.5deg
65.5deg
Seat Tube Angle
72.7deg
72.7deg
72.7deg
72.7deg
Head Tube Length
110mm
110mm
120mm
120mm
Bottom Bracket Drop
43mm
43mm
43mm
43mm
Bottom Bracket Height
307.4mm
307.4mm
307.4mm
307.4mm
Chainstay Length
415mm
415mm
415mm
415mm
Chainstay Length Horizontal
412.8mm
412.8mm
412.8mm
412.8mm
Front-Center
713.3mm
738.2mm
739.5mm
758.5mm
Front-Center Horizontal
712mm
737mm
738.3mm
757.3mm
Wheelbase
1124.7mm
1149.7mm
1151mm
1170mm
Fork Offset/Rake
46mm
46mm
46mm
46mm
Fork Length (Axle-To-Crown)
497mm
497mm
497mm
497mm
Trail
109.1mm
very high
109.1mm
very high
109.1mm
very high
109.1mm
very high
Mechanical Trail
99.3mm
99.3mm
99.3mm
99.3mm
Wheel Flop
41.2mm
41.2mm
41.2mm
41.2mm
Tire to Pedal Spindle
192.8mm
170 mm cranks
217.8mm
170 mm cranks
219.1mm
170 mm cranks
238.1mm
170 mm cranks
Pedal Spindle to Ground Clearance
137.4mm
170 mm cranks
137.4mm
170 mm cranks
137.4mm
170 mm cranks
137.4mm
170 mm cranks

Base Build

16.5" (REGULAR)
16.5" (LONG)
18" (REGULAR)
18" (LONG)
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
2.3in
2.3in
2.3in
2.3in
Tire Width Max
2.8in
2.8in
2.8in
2.8in
Tire Outer Diameter
700.8mm
700.8mm
700.8mm
700.8mm
Bike Length with Tires
1825.6mm
1850.6mm
1851.9mm
1870.9mm

Published Sizing Recommendations

Height
167 cm
to
177 cm
175 cm
to
180 cm
177 cm
to
185 cm
182 cm
to
193 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
Category Trend
Hardtail Trail MTB
Source:https://www.stantonbikes.com/product/switchback-631-next-gen-uk-2/