2019 Chromag Bikes Rootdown Base
- Category
- Hardtail All-mountain/Enduro MTB
- Design
- Flat Bar, Hardtail (Front suspension)
- Frame
- Steel
- Suspension
- 160mm fork travel
- Features
- Disc brake
Somewhat upright 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 | 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 |
Geometry
S | M | M/L | L | XL | |
Stack | 630mm | 630mm | 630mm | 639mm | 639mm |
Reach | 415mm | 433mm | 457mm | 478mm | 497mm |
Stack to Reach Ratio | 1.52:1 | 1.45:1 | 1.38:1 | 1.34:1 | 1.29:1 |
Seat Tube Length, C-T | 381mm | 419mm | 445mm | 470mm | 508mm |
Top Tube Length, Effective/Horizontal HT Top | 572mm | 590mm | 614mm | 637mm | 656mm |
Top Tube Slope | 27.2deg | 22.7deg | 19.3deg | 17.2deg | 13.3deg |
Head Tube Angle | 64deg | 64deg | 64deg | 64deg | 64deg |
Seat Tube Angle | 76deg | 76deg | 76deg | 76deg | 76deg |
Head Tube Length | 95mm | 95mm | 95mm | 105mm | 105mm |
Bottom Bracket Drop | 51mm | 51mm | 50.8mm | 51mm | 51mm |
Bottom Bracket Height | 312.1mm | 312.1mm | 312.3mm | 312.1mm | 312.1mm |
Chainstay Length | 415mm | 415mm | 415mm | 415mm | 415mm |
Chainstay Length Horizontal | 411.9mm | 411.9mm | 411.9mm | 411.9mm | 411.9mm |
Front-Center | 755.9mm | 773.8mm | 797.7mm | 822.7mm | 841.7mm |
Front-Center Horizontal | 754.2mm | 772.2mm | 796.1mm | 821.2mm | 840.2mm |
Wheelbase | 1166mm | 1184mm | 1208mm | 1233mm | 1252mm |
Fork Offset/Rake | 51mm | 51mm | 50.9mm | 50.7mm | 50.7mm |
Trail | 120.4mm very high | 120.4mm very high | 120.5mm very high | 120.8mm very high | 120.8mm very high |
Mechanical Trail | 108.2mm | 108.2mm | 108.3mm | 108.5mm | 108.5mm |
Wheel Flop | 47.4mm | 47.4mm | 47.5mm | 47.6mm | 47.6mm |
Standover Height | 690mm | 727mm | 752mm | 776mm | 813mm |
Tire to Pedal Spindle | 222.8mm 170 mm cranks | 240.7mm 170 mm cranks | 264.6mm 170 mm cranks | 289.6mm 170 mm cranks | 308.6mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 142.1mm 170 mm cranks | 142.1mm 170 mm cranks | 142.3mm 170 mm cranks | 142.1mm 170 mm cranks | 142.1mm 170 mm cranks |
Base Build
S | M | M/L | 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 | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD |
Tire Width | 2.8in | 2.8in | 2.8in | 2.8in | 2.8in |
Tire Width Max | 3in | 3in | 3in | 3in | 3in |
Tire Outer Diameter | 726.2mm | 726.2mm | 726.2mm | 726.2mm | 726.2mm |
Bike Length with Tires | 1892.2mm | 1910.2mm | 1934.2mm | 1959.2mm | 1978.2mm |
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 All-mountain/Enduro MTBSource:https://chromagbikes.com/products/frames-rootdown-19