2018 Surly Bikes Instigator 2.0 Base
- Category
- Hardtail Trail MTB
- Design
- Flat Bar, Hardtail (Front suspension)
- Frame
- Steel
- Suspension
- 140mm fork travel
- Features
- Disc brake
Average stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Somewhat aggressive stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Somewhat aggressive stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Somewhat aggressive stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Very aggressive stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry |
Geometry
xSmall (13) | Small (15) | Medium (17) | Large (19) | xLarge (21) | |
Stack | 584.5mm | 584.5mm | 584.5mm | 598.3mm | 598.3mm |
Reach | 377.9mm | 402.9mm | 422.9mm | 443.7mm | 463.7mm |
Stack to Reach Ratio | 1.55:1 | 1.45:1 | 1.38:1 | 1.35:1 | 1.29:1 |
Seat Tube Length, Unknown | 298.6mm | 376.4mm | 427.2mm | 478mm | 528.8mm |
Top Tube Length, Effective/Horizontal HT Top | 555mm | 580mm | 605mm | 625mm | 645mm |
Top Tube Length, Actual C-C | 552.8mm | 570.8mm | 584.7mm | 601.1mm | 621.6mm |
Top Tube Slope | 32.7deg | 23.6deg | 17.8deg | 13.6deg | 8.5deg |
Head Tube Angle | 67.5deg | 67.5deg | 67.5deg | 67.5deg | 67.5deg |
Seat Tube Angle | 73deg | 73deg | 73deg | 73deg | 73deg |
Head Tube Length | 100mm | 100mm | 100mm | 115mm | 115mm |
Bottom Bracket Drop | 30mm | 30mm | 30mm | 30mm | 30mm |
Bottom Bracket Height | 319.4mm | 319.4mm | 319.4mm | 319.4mm | 319.4mm |
Chainstay Length | 416.4mm | 416.4mm | 416.4mm | 416.4mm | 416.4mm |
Chainstay Length Horizontal | 415.3mm | 415.3mm | 415.3mm | 415.3mm | 415.3mm |
Front-Center | 655.9mm | 680.8mm | 705.8mm | 727.3mm | 747.3mm |
Front-Center Horizontal | 655.2mm | 680.2mm | 705.2mm | 726.7mm | 746.7mm |
Wheelbase | 1070.5mm | 1095.5mm | 1120.5mm | 1142mm | 1162mm |
Fork Offset/Rake | 44mm | 44mm | 44mm | 44mm | 44mm |
Fork Length (Axle-To-Crown) | 508.3mm | 508.3mm | 508.3mm | 508.3mm | 508.3mm |
Trail | 97.1mm very high | 97.1mm very high | 97.1mm very high | 97.1mm very high | 97.1mm very high |
Mechanical Trail | 89.7mm | 89.7mm | 89.7mm | 89.7mm | 89.7mm |
Wheel Flop | 34.3mm | 34.3mm | 34.3mm | 34.3mm | 34.3mm |
Standover Height | 738.7mm | 745.2mm | 771.6mm | 796.7mm | 827.7mm |
Tire to Pedal Spindle | 136.5mm 170 mm cranks | 161.5mm 170 mm cranks | 186.5mm 170 mm cranks | 208mm 170 mm cranks | 227.9mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 149.4mm 170 mm cranks | 149.4mm 170 mm cranks | 149.4mm 170 mm cranks | 149.4mm 170 mm cranks | 149.4mm 170 mm cranks |
Base Build
xSmall (13) | Small (15) | Medium (17) | Large (19) | xLarge (21) | |
Wheel Size | 26 in 559 mm BSD | 26 in 559 mm BSD | 26 in 559 mm BSD | 26 in 559 mm BSD | 26 in 559 mm BSD |
Tire Width | 2.75in | 2.75in | 2.75in | 2.75in | 2.75in |
Tire Outer Diameter | 698.7mm | 698.7mm | 698.7mm | 698.7mm | 698.7mm |
Bike Length with Tires | 1769.2mm | 1794.2mm | 1819.2mm | 1840.7mm | 1860.7mm |
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 Trail MTBSource:https://surlybikes.com/bikes/instigator_2point0-frame/geometry