2018 Chromag Bikes Rootdown 27.5+
- Category
- Hardtail All-mountain/Enduro MTB
- Design
- Flat Bar, Hardtail (Front suspension)
- Frame
- Steel
- Suspension
- 160mm fork travel
- Features
- Disc brake
Very upright stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Somewhat upright stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Somewhat upright stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | 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 |
Geometry
S | M | M/L | L | XL | |
Stack | 647mm | 647mm | 647mm | 647mm | 647mm |
Reach | 410mm | 438mm | 452mm | 473mm | 492mm |
Stack to Reach Ratio | 1.58:1 | 1.48:1 | 1.43:1 | 1.37:1 | 1.32:1 |
Seat Tube Length, C-T | 394mm | 431mm | 470mm | 495mm | 533mm |
Top Tube Length, Effective/Horizontal HT Top | 578mm | 603mm | 622mm | 648mm | 667mm |
Top Tube Slope | 27.5deg | 22.8deg | 18.6deg | 15.7deg | 11.9deg |
Head Tube Angle | 65deg | 65deg | 65deg | 65deg | 65deg |
Seat Tube Angle | 75deg | 75deg | 75deg | 75deg | 75deg |
Head Tube Length | 95mm | 95mm | 95mm | 105mm | 105mm |
Bottom Bracket Drop | 51.2mm | 51.2mm | 51.2mm | 51.2mm | 51.2mm |
Bottom Bracket Height | 317mm | 317mm | 317mm | 317mm | 317mm |
Chainstay Length | 415mm | 415mm | 415mm | 415mm | 415mm |
Chainstay Length Horizontal | 411.8mm | 411.8mm | 411.8mm | 411.8mm | 411.8mm |
Front-Center | 738mm | 764.9mm | 782.9mm | 808.8mm | 827.8mm |
Front-Center Horizontal | 736.2mm | 763.2mm | 781.2mm | 807.2mm | 826.2mm |
Wheelbase | 1148mm | 1175mm | 1193mm | 1219mm | 1238mm |
Fork Offset/Rake | 51mm | 51mm | 51mm | 51mm | 51mm |
Trail | 115.4mm very high | 115.4mm very high | 115.4mm very high | 115.4mm very high | 115.4mm very high |
Mechanical Trail | 104.6mm | 104.6mm | 104.6mm | 104.6mm | 104.6mm |
Wheel Flop | 44.2mm | 44.2mm | 44.2mm | 44.2mm | 44.2mm |
Standover Height | 687mm | 695mm | 729mm | 749mm | 784mm |
Tire to Pedal Spindle | 199.8mm 170 mm cranks | 226.7mm 170 mm cranks | 244.7mm 170 mm cranks | 270.6mm 170 mm cranks | 289.6mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 147mm 170 mm cranks | 147mm 170 mm cranks | 147mm 170 mm cranks | 147mm 170 mm cranks | 147mm 170 mm cranks |
27.5+ 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 | 3in | 3in | 3in | 3in | 3in |
Tire Outer Diameter | 736.4mm | 736.4mm | 736.4mm | 736.4mm | 736.4mm |
Bike Length with Tires | 1884.4mm | 1911.4mm | 1929.4mm | 1955.4mm | 1974.4mm |
Handlebar Width | 780mm | 780mm | 780mm | 780mm | 780mm |
Stem Length | 40mm | 40mm | 40mm | 40mm | 40mm |
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:http://www.chromagbikes.com/bikes/rootdown#geometry