2017 Surly Bikes Moonlander Base
- Category
- Rigid Fatbike
- Design
- Flat Bar, Rigid, suspension corrected
- Frame
- Steel
- Fork
- Steel
- Features
- Disc brake
Geometry
Small (16) | Medium (18) | Large (20) | xLarge (22) | xxLarge (22L) | |
Stack | 580mm | 590mm | 608mm | 627mm | 641mm |
Reach | 398mm | 415mm | 429mm | 438mm | 449mm |
Stack to Reach Ratio | 1.46:1 | 1.42:1 | 1.42:1 | 1.43:1 | 1.43:1 |
Seat Tube Length, C-T | 406.4mm | 457.2mm | 508mm | 558.8mm | 558.8mm |
Top Tube Length, Effective/Horizontal Center | 575mm | 595.5mm | 615mm | 630mm | 645mm |
Top Tube Slope | 20.3deg | 15.6deg | 12deg | 8.8deg | 9.9deg |
Head Tube Angle | 70.5deg | 70.5deg | 70.5deg | 70.5deg | 70.5deg |
Seat Tube Angle | 73deg | 73deg | 73deg | 73deg | 73deg |
Head Tube Length | 110mm | 120mm | 140mm | 160mm | 175mm |
Bottom Bracket Drop | 60mm | 60mm | 60mm | 60mm | 60mm |
Bottom Bracket Height | 321mm | 321mm | 321mm | 321mm | 321mm |
Chainstay Length | 450mm | 450mm | 450mm | 450mm | 450mm |
Chainstay Length Max | 450mm | 450mm | 450mm | 450mm | 450mm |
Chainstay Length Horizontal | 446mm | 446mm | 446mm | 446mm | 446mm |
Chainstay Length Horizontal Max | 446mm | 446mm | 446mm | 446mm | 446mm |
Front-Center | 630.3mm | 650.7mm | 671.5mm | 687.3mm | 703mm |
Front-Center Horizontal | 627.4mm | 647.9mm | 668.8mm | 684.7mm | 700.4mm |
Wheelbase | 1073.4mm | 1093.9mm | 1114.8mm | 1130.7mm | 1146.4mm |
Wheelbase Max | 1073.4mm | 1093.9mm | 1114.8mm | 1130.7mm | 1146.4mm |
Fork Offset/Rake | 43mm | 43mm | 43mm | 43mm | 43mm |
Fork Length (Axle-To-Crown) | 447mm | 447mm | 447mm | 447mm | 447mm |
Trail | 89.3mm very high | 89.3mm very high | 89.3mm very high | 89.3mm very high | 89.3mm very high |
Mechanical Trail | 84.2mm | 84.2mm | 84.2mm | 84.2mm | 84.2mm |
Wheel Flop | 28.1mm | 28.1mm | 28.1mm | 28.1mm | 28.1mm |
Standover Height | 771.1mm | 800.1mm | 833.8mm | 868mm | 875mm |
Tire to Pedal Spindle | 79.3mm 170 mm cranks | 94.7mm 175 mm cranks | 115.5mm 175 mm cranks | 126.3mm 180 mm cranks | 142mm 180 mm cranks |
Pedal Spindle to Ground Clearance | 151mm 170 mm cranks | 146mm 175 mm cranks | 146mm 175 mm cranks | 141mm 180 mm cranks | 141mm 180 mm cranks |
Base Build
Small (16) | Medium (18) | Large (20) | xLarge (22) | xxLarge (22L) | |
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 | 4.8in | 4.8in | 4.8in | 4.8in | 4.8in |
Tire Width Max | 4.8in | 4.8in | 4.8in | 4.8in | 4.8in |
Tire Outer Diameter | 762mm | 762mm | 762mm | 762mm | 762mm |
Bike Length with Tires | 1835.4mm | 1855.9mm | 1876.8mm | 1892.7mm | 1908.4mm |
Crank Length | 170mm | 175mm | 175mm | 180mm | 180mm |
Handlebar Width | 700mm | 750mm | 750mm | 750mm | 750mm |
Stem Length | 90mm | 100mm | 110mm | 120mm | 120mm |
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
Rigid FatbikeSource:https://surlybikes.com/bikes/legacy/moonlander/moonlander_metallic_sand/geometry