2021 Marin Bikes bolinas ridge Base
- Category
- Hardtail Cross-country MTB
- Design
- Flat Bar, Hardtail (Front suspension)
- Frame
- Aluminum
- Fork
- Aluminum
- Suspension
- 80mm fork travel
- Features
- Disc brake
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 | Somewhat aggressive 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 | 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 |
Geometry
XS | S | M (27.5) | M (29) | L | XL | |
Stack | 580.8mm | 585.5mm | 590mm | 616mm | 620.5mm | 625mm |
Reach | 400mm | 415mm | 430mm | 430mm | 445mm | 465mm |
Stack to Reach Ratio | 1.45:1 | 1.41:1 | 1.37:1 | 1.43:1 | 1.39:1 | 1.34:1 |
Seat Tube Length, C-T | 330mm | 381mm | 431mm | 431mm | 481mm | 520mm |
Top Tube Length, Effective/Horizontal Center | 566.5mm | 583mm | 599.2mm | 606.6mm | 623mm | 644.2mm |
Top Tube Slope | 28.2deg | 22.9deg | 17.8deg | 20.2deg | 15.3deg | 11.6deg |
Head Tube Angle | 68.5deg | 68.5deg | 68.5deg | 68deg | 68deg | 68deg |
Seat Tube Angle | 74deg | 74deg | 74deg | 74deg | 74deg | 74deg |
Head Tube Length | 100mm | 105mm | 110mm | 110mm | 115mm | 120mm |
Bottom Bracket Drop | 48mm | 48mm | 48mm | 61mm | 61mm | 61mm |
Bottom Bracket Height | 299.9mm | 299.9mm | 299.9mm | 305.9mm | 305.9mm | 305.9mm |
Chainstay Length | 430mm | 430mm | 430mm | 455mm | 455mm | 455mm |
Chainstay Length Horizontal | 427.3mm | 427.3mm | 427.3mm | 450.9mm | 450.9mm | 450.9mm |
Front-Center | 658.9mm | 675.7mm | 692.6mm | 711.7mm | 728.7mm | 750.6mm |
Front-Center Horizontal | 657.2mm | 674mm | 690.9mm | 709.1mm | 726.1mm | 748.1mm |
Wheelbase | 1084.5mm | 1101.3mm | 1118.2mm | 1160mm | 1177mm | 1199mm |
Fork Offset/Rake | 44mm | 44mm | 44mm | 51mm | 51mm | 51mm |
Fork Length, Unknown | 560mm | 560mm | 560mm | 590mm | 590mm | 590mm |
Trail | 89.7mm very high | 89.7mm very high | 89.7mm very high | 93.2mm very high | 93.2mm very high | 93.2mm very high |
Mechanical Trail | 83.5mm | 83.5mm | 83.5mm | 86.4mm | 86.4mm | 86.4mm |
Wheel Flop | 30.6mm | 30.6mm | 30.6mm | 32.4mm | 32.4mm | 32.4mm |
Standover Height | 649.1mm | 663mm | 706.2mm | 716.4mm | 744.9mm | 773.7mm |
Tire to Pedal Spindle | 141.1mm 170 mm cranks | 157.8mm 170 mm cranks | 174.7mm 170 mm cranks | 174.9mm 170 mm cranks | 191.8mm 170 mm cranks | 213.7mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 129.9mm 170 mm cranks | 129.9mm 170 mm cranks | 129.9mm 170 mm cranks | 135.9mm 170 mm cranks | 135.9mm 170 mm cranks | 135.9mm 170 mm cranks |
Base Build
XS | S | M (27.5) | M (29) | L | XL | |
Wheel Size | 650B/27.5 in 584 mm BSD | 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 | 2.2in | 2.2in | 2.2in | 2.2in | 2.2in | 2.2in |
Tire Outer Diameter | 695.8mm | 695.8mm | 695.8mm | 733.8mm | 733.8mm | 733.8mm |
Bike Length with Tires | 1780.3mm | 1797.1mm | 1814mm | 1893.8mm | 1910.8mm | 1932.8mm |
Crank Length | 170mm | 170mm | 170mm | 170mm | 170mm | 170mm |
Handlebar Width | 780mm | 780mm | 780mm | 780mm | 780mm | 780mm |
Stem Length | 45mm | 45mm | 45mm | 45mm | 45mm | 45mm |
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
Hardtail Cross-country MTBSource:https://www.marinbikes.com/bikes/2024-bolinas-ridge-2