2024 Ritchey Design Ultra Base 29er, 120mm Fork
- Category
- Hardtail Cross-country MTB
- Design
- Flat Bar, Hardtail (Front suspension)
- Frame
- Steel
- Suspension
- 120mm 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
Small | Medium | Large | X-Large | |
Stack | 606mm | 613mm | 617mm | 627mm |
Reach | 417mm | 430mm | 445mm | 460mm |
Stack to Reach Ratio | 1.45:1 | 1.43:1 | 1.39:1 | 1.36:1 |
Seat Tube Length, C-T | 390mm | 432mm | 475mm | 515mm |
Top Tube Length, Effective/Horizontal Unknown | 591mm | 606mm | 628mm | 644mm |
Top Tube Slope | 23.8deg | 19.8deg | 15.6deg | 12.4deg |
Head Tube Angle | 68deg | 68.5deg | 68.5deg | 68.5deg |
Seat Tube Angle | 74deg | 74deg | 73.5deg | 73.5deg |
Head Tube Length | 100mm | 105mm | 110mm | 120mm |
Bottom Bracket Drop | 58mm | 58mm | 58mm | 58mm |
Bottom Bracket Height | 319mm | 319mm | 319mm | 319mm |
Chainstay Length | 439mm | 439mm | 439mm | 439mm |
Chainstay Length Horizontal | 435.2mm | 435.2mm | 435.2mm | 435.2mm |
Front-Center | 695.3mm | 705.2mm | 722.2mm | 741.1mm |
Front-Center Horizontal | 692.9mm | 702.9mm | 719.9mm | 738.9mm |
Wheelbase | 1128mm | 1138mm | 1155mm | 1174mm |
Fork Offset/Rake | 51mm | 51mm | 51mm | 51mm |
Trail | 97.3mm very high | 93.7mm very high | 93.7mm very high | 93.7mm very high |
Mechanical Trail | 90.2mm | 87.2mm | 87.2mm | 87.2mm |
Wheel Flop | 33.8mm | 32mm | 32mm | 32mm |
Standover Height | 742mm | 771mm | 800mm | 827mm |
Tire to Pedal Spindle | 148.2mm 170 mm cranks | 158.2mm 170 mm cranks | 175.1mm 170 mm cranks | 194.1mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 149mm 170 mm cranks | 149mm 170 mm cranks | 149mm 170 mm cranks | 149mm 170 mm cranks |
Base 29er, 120mm Fork Build
Small | Medium | Large | X-Large | |
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 | 2.6in | 2.6in | 2.6in | 2.6in |
Tire Outer Diameter | 754.1mm | 754.1mm | 754.1mm | 754.1mm |
Bike Length with Tires | 1882.1mm | 1892.1mm | 1909.1mm | 1928.1mm |
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://ritcheylogic.com/bike/frames/ultra-frameset