2026 Forbidden Bike Co. Puritan Base S4
Build
700C/29 in × 50 mm
Insights
Average stack and reach vs trend of progressive gravel bikes
Design deviates from other sizes of Forbidden Bike Co. Puritan
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 635mm |
| Reach | 453mm |
| Stack to Reach Ratio | 1.4:1 |
| Seat Tube Length, C-T | 540mm |
| Top Tube Length, Effective/Horizontal HT Top | 642mm |
| Head Tube Angle | 67.75deg |
| Effective Seat Tube Angle, Unknown | 73.3deg |
| Head Tube Length | 155mm |
| Bottom Bracket Drop | 71mm |
| Bottom Bracket Height | 290mm |
| Chainstay Length | 448mm |
| Chainstay Length Horizontal | 442.3mm |
| Front-Center | 730mm |
| Front-Center Horizontal | 735.7mm |
| Wheelbase | 1178mm |
| Fork Offset/Rake | 45mm |
| Fork Length (Axle-To-Crown) | 460mm |
| Trail | 99.1mm very high |
| Mechanical Trail | 91.7mm |
| Wheel Flop | 34.7mm |
| Standover Height | 786mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 199mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 120mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 50mm |
| Tire Outer Diameter | 722mm |
| Bike Length with Tires | 1900mm |
| Suspension Type | Rigid, suspension corrected |
| Bar Type | Flat Bar |
| Frame Material | Titanium |
| Fork Material | Unknown |
| Brake Type | Unknown |
Source:https://forbiddenbike.com/bikes/puritan/