2021 Pilot Cycles Primum Base
- Category
- Hardtail Cross-country MTB
- Design
- Flat Bar, Hardtail (Front suspension)
- Frame
- Titanium
- Suspension
- 100mm 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 | 608mm | 619mm | 633mm | 647mm |
Reach | 415mm | 430mm | 446mm | 461mm |
Stack to Reach Ratio | 1.47:1 | 1.44:1 | 1.42:1 | 1.4:1 |
Seat Tube Length, C-T | 430mm | 450mm | 483mm | 515mm |
Top Tube Length, Effective/Horizontal Unknown | 599mm | 617mm | 638mm | 658mm |
Top Tube Slope | 20deg | 18.6deg | 16.3deg | 14.2deg |
Head Tube Angle | 68.5deg | 69deg | 69deg | 69deg |
Seat Tube Angle | 73.5deg | 73.2deg | 73deg | 73deg |
Head Tube Length | 100mm | 110mm | 125mm | 140mm |
Bottom Bracket Drop | 63mm | 60mm | 60mm | 60mm |
Bottom Bracket Height | 305.2mm | 308.2mm | 308.2mm | 308.2mm |
Chainstay Length | 430mm | 430mm | 430mm | 430mm |
Chainstay Length Horizontal | 425.4mm | 425.8mm | 425.8mm | 425.8mm |
Front-Center | 681.6mm | 693.8mm | 715.7mm | 735.7mm |
Front-Center Horizontal | 678.6mm | 691.2mm | 713.2mm | 733.2mm |
Wheelbase | 1104mm | 1117mm | 1139mm | 1159mm |
Fork Offset/Rake | 45.6mm | 43.5mm | 44.1mm | 43.8mm |
Trail | 96.1mm very high | 94.7mm very high | 94.1mm very high | 94.4mm very high |
Mechanical Trail | 89.4mm | 88.4mm | 87.8mm | 88.2mm |
Wheel Flop | 32.8mm | 31.7mm | 31.5mm | 31.6mm |
Tire to Pedal Spindle | 143.4mm 170 mm cranks | 155.7mm 170 mm cranks | 177.6mm 170 mm cranks | 197.5mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 135.2mm 170 mm cranks | 138.2mm 170 mm cranks | 138.2mm 170 mm cranks | 138.2mm 170 mm cranks |
Base Build
S | M | L | XL | |
Wheel Size | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 2.25in | 2.25in | 2.25in | 2.25in |
Tire Width Max | 2.35in | 2.35in | 2.35in | 2.35in |
Tire Outer Diameter | 736.3mm | 736.3mm | 736.3mm | 736.3mm |
Bike Length with Tires | 1840.3mm | 1853.3mm | 1875.3mm | 1895.3mm |
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 Cross-country MTBSource:https://www.pilotcycles.com/frame-customize/primum/