2020 Twin Six Standard FSU Base 21" // XL
Build
650B/27.5 in × 3 in
Insights
Average stack and reach vs trend of hardtail trail mtb bikes
Design deviates from other sizes of Twin Six Standard FSU
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 634mm |
| Reach | 446mm |
| Stack to Reach Ratio | 1.42:1 |
| Seat Tube Length, C-T | 543mm |
| Top Tube Length, Effective/Horizontal Unknown | 639mm |
| Top Tube Slope | 10.7deg |
| Head Tube Angle | 68.8deg |
| Seat Tube Angle | 73.3deg |
| Head Tube Length | 135mm |
| Bottom Bracket Drop | 55mm |
| Bottom Bracket Height | 313.2mm |
| Chainstay Length | 440mm |
| Chainstay Length Horizontal | 436.6mm |
| Front-Center | 727.5mm |
| Front-Center Horizontal | 725.5mm |
| Wheelbase | 1162mm |
| Fork Offset/Rake | 51.2mm |
| Trail | 87.9mm very high |
| Mechanical Trail | 82mm |
| Wheel Flop | 29.7mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 189.3mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 143.2mm |
Base Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 3in |
| Tire Outer Diameter | 736.4mm |
| Bike Length with Tires | 1898.4mm |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | 130mm |
| Suspension Sag | Unknown |
| Frame Material | Titanium |
| Fork Material | Unknown |
| Brake Type | Disc |
Source:https://www.twinsix.com/collections/bikes-bits/products/standard-ti-fsu?variant=31934351999073