2018 Marin Bikes Four Corners Base
- Category
- Touring
- Design
- Drop Bar, Rigid, non-suspension corrected
- Frame
- Steel
- Fork
- Steel
- Features
- Disc brake
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 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 |
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 ScaleCategory Trend
TouringSource:Bike Counterculture Geometry Database