2018 Borealis Fat Bikes Flume Base
- Category
- Rigid Fatbike
- Design
- Flat Bar, Rigid, suspension corrected
- Frame
- Aluminum
- Fork
- Carbon/Composite
- Features
- Disc brake
Geometry
S | M | L | XL | |
Stack | 596.9mm | 610.9mm | 625.1mm | 639.1mm |
Reach | 407.4mm | 422.9mm | 437.4mm | 451.1mm |
Stack to Reach Ratio | 1.47:1 | 1.44:1 | 1.43:1 | 1.42:1 |
Seat Tube Length, C-T | 381mm | 432.1mm | 484.1mm | 533.9mm |
Top Tube Length, Effective/Horizontal HT Top | 604mm | 610.1mm | 629.9mm | 650mm |
Top Tube Slope | 24.1deg | 19.8deg | 15.6deg | 12deg |
Head Tube Angle | 70deg | 70deg | 70deg | 70deg |
Seat Tube Angle | 73deg | 73deg | 73deg | 73deg |
Head Tube Length | 104.9mm | 119.9mm | 134.9mm | 150.1mm |
Bottom Bracket Drop | 59.9mm | 59.9mm | 59.9mm | 59.9mm |
Bottom Bracket Height | 319.6mm | 319.6mm | 319.6mm | 319.6mm |
Chainstay Length | 454.9mm | 454.9mm | 454.9mm | 454.9mm |
Chainstay Length Horizontal | 451mm | 451mm | 451mm | 451mm |
Front-Center | 659.9mm | 680.4mm | 699.9mm | 718.7mm |
Front-Center Horizontal | 657.1mm | 677.7mm | 697.4mm | 716.2mm |
Wheelbase | 1108.1mm | 1128.7mm | 1148.3mm | 1167.1mm |
Fork Offset/Rake | 51mm | 51mm | 51mm | 51mm |
Trail | 83.9mm very high | 83.9mm very high | 83.9mm very high | 83.9mm very high |
Mechanical Trail | 78.8mm | 78.8mm | 78.8mm | 78.8mm |
Wheel Flop | 27mm | 27mm | 27mm | 27mm |
Tire to Pedal Spindle | 110.4mm 170 mm cranks | 130.9mm 170 mm cranks | 150.4mm 170 mm cranks | 169.2mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 149.6mm 170 mm cranks | 149.6mm 170 mm cranks | 149.6mm 170 mm cranks | 149.6mm 170 mm cranks |
Base Build
S | M | L | XL | |
Wheel Size | 26 in 559 mm BSD | 26 in 559 mm BSD | 26 in 559 mm BSD | 26 in 559 mm BSD |
Tire Width | 100mm | 100mm | 100mm | 100mm |
Tire Outer Diameter | 759mm | 759mm | 759mm | 759mm |
Bike Length with Tires | 1867.1mm | 1887.7mm | 1907.3mm | 1926.1mm |
Published Sizing Recommendations
Height | 5 ft 2 in to 5 ft 6 in | 5 ft 5 in to 5 ft 10 in | 5 ft 9 in to 6 ft 2 in | 6 ft 1 in to 6 ft 5 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 ScaleCategory Trend
Rigid FatbikeSource:https://www.fatbike.com/store/FLUME-EAGLE-NX-p124043621