2021 Marin Bikes Four Corners Complete

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 650B
S 650B
M 700C
L 700C
XL 700C
Stack
560mm
580mm
617mm
646.3mm
677.6mm
Reach
376.7mm
381mm
403.3mm
412.6mm
426.6mm
Stack to Reach Ratio
1.49:1
1.52:1
1.53:1
1.57:1
1.59:1
Seat Tube Length, C-T
381mm
422mm
462mm
495mm
528mm
Top Tube Length, Effective/Horizontal HT Top
532mm
552.8mm
586.1mm
616.4mm
646.8mm
Top Tube Length, Actual C-C
518mm
533mm
564mm
589mm
616mm
Top Tube Slope
22deg
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
53.5mm
72mm
72mm
72mm
Bottom Bracket Height
280.5mm
280.5mm
281mm
281mm
281mm
Chainstay Length
432mm
432mm
450mm
450mm
450mm
Chainstay Length Horizontal
428.7mm
428.7mm
444.2mm
444.2mm
444.2mm
Front-Center
604.1mm
615.5mm
640.9mm
659.7mm
684.7mm
Front-Center Horizontal
601.7mm
613.1mm
636.8mm
655.8mm
680.9mm
Wheelbase
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
111.5mm
170 mm cranks
117.9mm
170 mm cranks
131.7mm
175 mm cranks
156.7mm
175 mm cranks
Pedal Spindle to Ground Clearance
110.5mm
170 mm cranks
110.5mm
170 mm cranks
111mm
170 mm cranks
106mm
175 mm cranks
106mm
175 mm cranks

Complete Build

XS 650B
S 650B
M 700C
L 700C
XL 700C
Wheel Size
650B/27.5 in
584 mm BSD
650B/27.5 in
584 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
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
Crank Length
170mm
170mm
170mm
175mm
175mm
Handlebar Width
400mm
400mm
420mm
440mm
440mm
Stem Length
70mm
70mm
70mm
70mm
70mm

Published Sizing Recommendations

Height
4 ft 11 in
to
5 ft 2 in
5 ft 2 in
to
5 ft 6 in
5 ft 6 in
to
5 ft 10 in
5 ft 10 in
to
6 ft 1 in
6 ft 1 in
to
6 ft 4 in

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:https://www.marinbikes.com/bikes/2021-four-corners