2023 Jamis Bicycles Portal C4 Lo XL/21″
Build
700C/29 in × 2.4 in
Insights
Average stack and reach vs trend of full-suspension trail mtb bikes
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Bar type unusual for category
This: Moto/Klunker/Riser Bar
Category: Flat Bar
vs full-suspension trail mtb bikesCategory: Flat Bar
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 634mm |
| Reach | 482mm |
| Stack to Reach Ratio | 1.32:1 |
| Top Tube Length, Effective/Horizontal Center | 660mm |
| Head Tube Angle | 67deg |
| Seat Tube Angle | 74deg |
| Head Tube Length | 135mm |
| Bottom Bracket Drop | 33mm |
| Bottom Bracket Height | 339mm |
| Chainstay Length | 437mm |
| Chainstay Length Horizontal | 435.8mm |
| Front-Center | 788.9mm |
| Front-Center Horizontal | 788.3mm |
| Wheelbase | 1224mm |
| Fork Offset/Rake | 51mm |
| Trail | 102.5mm very high |
| Mechanical Trail | 94.3mm |
| Wheel Flop | 36.9mm |
| Standover Height | 774mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 247mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 169mm |
C4 Lo Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 2.4in |
| Tire Outer Diameter | 743.9mm |
| Bike Length with Tires | 1967.9mm |
| Suspension Type | Full suspension |
| Bar Type | Moto/Klunker/Riser Bar |
| Fork Travel | Unknown |
| Rear Travel | Unknown |
| Suspension Sag | Unknown |
| Frame Material | Carbon/Composite |
| Fork Material | Unknown |
| Brake Type | Disc |
Source:https://www.jamisbikes.com/bikes/mountain-bikes/3vo/portal/