2020 Alchemy Bicycles Arktos 27.5 Base
- Category
- Full-suspension Trail MTB
- Design
- Flat Bar, Full suspension
- Frame
- Carbon/Composite
- Suspension
- 170mm fork travel
- Features
- Disc brake
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 | L | XL | |
Stack | 589mm | 599mm | 604mm | 614mm |
Reach | 401mm | 415mm | 431mm | 448mm |
Stack to Reach Ratio | 1.47:1 | 1.44:1 | 1.4:1 | 1.37:1 |
Seat Tube Length, C-T | 420mm | 455mm | 483mm | 518mm |
Top Tube Length, Effective/Horizontal HT Top | 585mm | 600mm | 615mm | 642mm |
Head Tube Angle | 65.5deg | 65.5deg | 65.5deg | 65.5deg |
Effective Seat Tube Angle, Seat Tube Top | 73.5deg | 73.5deg | 73.5deg | 73.5deg |
Head Tube Length | 100mm | 110mm | 115mm | 130mm |
Bottom Bracket Drop | 10mm | 10mm | 10mm | 10mm |
Bottom Bracket Height | 343mm | 343mm | 343mm | 343mm |
Chainstay Length | 438mm | 438mm | 438mm | 438mm |
Chainstay Length Horizontal | 437.9mm | 437.9mm | 437.9mm | 437.9mm |
Front-Center | 723.2mm | 733.2mm | 747.2mm | 774.2mm |
Front-Center Horizontal | 723.1mm | 733.1mm | 747.1mm | 774.1mm |
Wheelbase | 1161mm | 1171mm | 1185mm | 1212mm |
Fork Offset/Rake | 39mm | 39mm | 39mm | 39mm |
Trail | 118mm very high | 118mm very high | 118mm very high | 118mm very high |
Mechanical Trail | 107.4mm | 107.4mm | 107.4mm | 107.4mm |
Wheel Flop | 44.5mm | 44.5mm | 44.5mm | 44.5mm |
Standover Height | 756mm | 780mm | 798mm | 826mm |
Tire to Pedal Spindle | 200.2mm 170 mm cranks | 210.2mm 170 mm cranks | 224.2mm 170 mm cranks | 251.2mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 173mm 170 mm cranks | 173mm 170 mm cranks | 173mm 170 mm cranks | 173mm 170 mm cranks |
Base Build
S | M | 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 |
Tire Width | 2.4in | 2.4in | 2.4in | 2.4in |
Tire Outer Diameter | 705.9mm | 705.9mm | 705.9mm | 705.9mm |
Bike Length with Tires | 1866.9mm | 1876.9mm | 1890.9mm | 1917.9mm |
Published Sizing Recommendations
Height | 5 ft 1 in to 5 ft 5 in | 5 ft 5 in to 5 ft 9 in | 5 ft 9 in to 6 ft 1 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
Full-suspension Trail MTBSource:https://alchemybicycles.com/product/arktos-275/