2018 Marin Bikes Four Corners Base

Category
Touring
Design
Drop Bar, Rigid, non-suspension corrected
Frame
Steel
Fork
Steel
Features
Disc brake
Average stack and reachvs category
Average stack and reachvs category
Somewhat aggressive stack and reachvs category
Somewhat aggressive stack and reachvs category
Very aggressive stack and reachvs category

Geometry

XS
S
M
L
XL
Stack
560mm
580mm
617mm
646mm
678mm
Reach
377mm
381mm
403mm
413mm
427mm
Stack to Reach Ratio
1.49:1
1.52:1
1.53:1
1.56:1
1.59:1
Seat Tube Length, C-T
381mm
422mm
462mm
495mm
528mm
Top Tube Length, Effective/Horizontal Center
532mm
552.8mm
586.1mm
616.4mm
646.8mm
Top Tube Slope
21.9deg
19.3deg
18deg
17.2deg
16.6deg
Head Tube Angle
70.5deg
70.5deg
71.5deg
71.5deg
71.5deg
Seat Tube Angle
74.5deg
73.5deg
73.5deg
72.5deg
72deg
Head Tube Length
177mm
198mm
198mm
229mm
262mm
Bottom Bracket Drop
53.5mm
70.5mm
71.5mm
71.5mm
71.5mm
Bottom Bracket Height
280.5mm
263.5mm
281.5mm
281.5mm
281.5mm
Chainstay Length
432mm
432mm
450mm
450mm
450mm
Chainstay Length Max
432mm
432mm
450mm
450mm
450mm
Chainstay Length Horizontal
428.7mm
426.2mm
444.3mm
444.3mm
444.3mm
Chainstay Length Horizontal Max
428.7mm
426.2mm
444.3mm
444.3mm
444.3mm
Front-Center
604.1mm
619.6mm
640.7mm
659.6mm
684.6mm
Front-Center Horizontal
601.7mm
615.6mm
636.7mm
655.7mm
680.8mm
Wheelbase
1030.4mm
1041.8mm
1081mm
1100mm
1125.1mm
Wheelbase Max
1030.4mm
1041.8mm
1081mm
1100mm
1125.1mm
Fork Offset/Rake
43mm
43mm
49mm
49mm
49mm
Trail
72.7mm
high
72.7mm
high
66.4mm
high
66.4mm
high
66.4mm
high
Mechanical Trail
68.5mm
68.5mm
63mm
63mm
63mm
Wheel Flop
22.9mm
22.9mm
20mm
20mm
20mm
Standover Height
666.6mm
706.4mm
744.5mm
777.3mm
809.8mm
Tire to Pedal Spindle
100.1mm
170 mm cranks
115.6mm
170 mm cranks
117.7mm
170 mm cranks
136.6mm
170 mm cranks
161.6mm
170 mm cranks
Pedal Spindle to Ground Clearance
110.5mm
170 mm cranks
93.5mm
170 mm cranks
111.5mm
170 mm cranks
111.5mm
170 mm cranks
111.5mm
170 mm cranks

Base Build

XS
S
M
L
XL
Wheel Size
650B/27.5
584 mm BSD
650B/27.5
584 mm BSD
700C/29"
622 mm BSD
700C/29"
622 mm BSD
700C/29"
622 mm BSD
Tire Width
42mm
42mm
42mm
42mm
42mm
Tire Outer Diameter
668mm
668mm
706mm
706mm
706mm
Bike Length with Tires
1698.4mm
1709.8mm
1787mm
1806mm
1831.1mm

Published Sizing Recommendations

Height
149 cm
to
160 cm
157 cm
to
168 cm
168 cm
to
178 cm
178 cm
to
185 cm
185 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
Touring
Source:Bike Counterculture Geometry Database