2025 Forbidden Bike Co. Heathen Base
- Design
- Flat Bar, Full suspension
Somewhat upright stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Somewhat upright stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Somewhat upright stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Somewhat upright stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry |
Geometry
S1 (MX Wheels) | S2 (MX Wheels) | S3 (29 Wheels) | S4 (29 Wheels) | |
Stack | 621mm | 630mm | 639mm | 648mm |
Reach | 435mm | 455mm | 475mm | 495mm |
Stack to Reach Ratio | 1.43:1 | 1.38:1 | 1.35:1 | 1.31:1 |
Seat Tube Length, C-T | 400mm | 420mm | 440mm | 470mm |
Top Tube Length, Effective/Horizontal Center | 590mm | 612mm | 634mm | 657mm |
Top Tube Slope | 23.6deg | 21.8deg | 20deg | 17.5deg |
Head Tube Angle | 64deg | 64deg | 64deg | 64deg |
Seat Tube Angle | 75.3deg | 76deg | 75.3deg | 76deg |
Effective Seat Tube Angle, ETT HT Top | 76deg | 76deg | 76deg | 76deg |
Head Tube Length | 90mm | 100mm | 110mm | 120mm |
Bottom Bracket Drop | — | 23.2mm | 0mm | 0mm |
Bottom Bracket Height | — | 348.7mm | 372mm | 372mm |
Chainstay Length | 399mm | 413mm | 427mm | 441mm |
Chainstay Length Horizontal | — | 412.4mm | 427mm | 441mm |
Front-Center | 756.4mm | 780.8mm | 805.2mm | 829.6mm |
Front-Center Horizontal | — | 780.5mm | 805.2mm | 829.6mm |
Wheelbase | 1155.4mm | 1192.8mm | 1232.2mm | 1270.6mm |
Fork Offset/Rake | 44mm | 44mm | 44mm | 44mm |
Fork Length (On-Axis) | 541mm | 541mm | 541mm | 541mm |
Trail | 132.5mm very high | 132.5mm very high | 132.5mm very high | 132.5mm very high |
Mechanical Trail | 119.1mm | 119.1mm | 119.1mm | 119.1mm |
Wheel Flop | 52.2mm | 52.2mm | 52.2mm | 52.2mm |
Standover Height | 716mm | 728mm | 740mm | 764mm |
Tire to Pedal Spindle | 214.4mm 170 mm cranks | 238.8mm 170 mm cranks | 263.2mm 170 mm cranks | 287.6mm 170 mm cranks |
Pedal Spindle to Ground Clearance | — 170 mm cranks | 178.7mm 170 mm cranks | 202mm 170 mm cranks | 202mm 170 mm cranks |
Base Build
S1 (MX Wheels) | S2 (MX Wheels) | S3 (29 Wheels) | S4 (29 Wheels) | |
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 | 2.4in | 2.4in | 2.4in | 2.4in |
Tire Outer Diameter | 743.9mm | 743.9mm | 743.9mm | 743.9mm |
Bike Length with Tires | 1899.3mm | 1936.7mm | 1976.1mm | 2014.5mm |
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
Full-suspension All-mountain/Enduro MTBSource:https://forbiddenbike.com/bikes/heathen/