2026 Sour Bicycles Purple Pie Pinion XS
Build
700C/29 in × 50 mm
Insights
Average stack and reach vs trend of all-road/gravel bikes
Stack and Reach vs. Category Trend
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Geometry
| Stack | 540.3mm |
| Reach | 374.2mm |
| Stack to Reach Ratio | 1.44:1 |
| Seat Tube Length, C-T | 450mm |
| Top Tube Length, Effective/Horizontal HT Top | 519mm |
| Top Tube Slope | 12.2deg |
| Head Tube Angle | 70.5deg |
| Seat Tube Angle | 75deg |
| Head Tube Length | 120mm |
| Bottom Bracket Drop | 72mm |
| Bottom Bracket Height | 289mm |
| Chainstay Length | 440mm |
| Chainstay Length Horizontal | 434.1mm |
| Front-Center | 602.1mm |
| Front-Center Horizontal | 597.7mm |
| Wheelbase | 1031.8mm |
| Fork Offset/Rake | 45mm |
| Fork Length (On-Axis) | 405mm |
| Trail | 80.1mm very high |
| Mechanical Trail | 75.5mm |
| Wheel Flop | 25.2mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 71.1mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 119mm |
Pinion Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 50mm |
| Tire Outer Diameter | 722mm |
| Bike Length with Tires | 1753.8mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Steel |
| Fork Material | Steel |
| Brake Type | Disc |
Source:https://sour.bike/bikes/gravel/purple-pie/