2018 Chromag Bikes Rootdown 27.5+ S
Build
650B/27.5 in × 3 in
Insights
Very upright stack and reach vs trend of hardtail all-mountain/enduro mtb bikes
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
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Geometry
| Stack | 647mm |
| Reach | 410mm |
| Stack to Reach Ratio | 1.58:1 |
| Seat Tube Length, C-T | 394mm |
| Top Tube Length, Effective/Horizontal HT Top | 578mm |
| Top Tube Slope | 27.5deg |
| Head Tube Angle | 65deg |
| Seat Tube Angle | 75deg |
| Head Tube Length | 95mm |
| Bottom Bracket Drop | 51.2mm |
| Bottom Bracket Height | 317mm |
| Chainstay Length | 415mm |
| Chainstay Length Horizontal | 411.8mm |
| Front-Center | 738mm |
| Front-Center Horizontal | 736.2mm |
| Wheelbase | 1148mm |
| Fork Offset/Rake | 51mm |
| Trail | 115.4mm very high |
| Mechanical Trail | 104.6mm |
| Wheel Flop | 44.2mm |
| Standover Height | 687mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 199.8mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 147mm |
27.5+ Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 3in |
| Tire Outer Diameter | 736.4mm |
| Bike Length with Tires | 1884.4mm |
| Handlebar Width | 780mm |
| Stem Length | 40mm |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | 160mm |
| Suspension Sag | Unknown |
| Frame Material | Steel |
| Fork Material | Unknown |
| Brake Type | Disc |
Source:http://www.chromagbikes.com/bikes/rootdown#geometry