2021 18 Bikes No 7 Base 475
Build
650B/27.5 in × 2.3 in
Insights
Very aggressive stack and reach vs trend of hardtail trail mtb bikes
Design deviates from other sizes of 18 Bikes No 7
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 568mm |
| Reach | 475mm |
| Stack to Reach Ratio | 1.2:1 |
| Seat Tube Length, Unknown | 380mm |
| Top Tube Length, Unknown | 638mm |
| Top Tube Slope | 19.3deg |
| Head Tube Angle | 65.5deg |
| Seat Tube Angle | 74deg |
| Head Tube Length | 100mm |
| Bottom Bracket Drop | 35mm |
| Bottom Bracket Height | 315.4mm |
| Chainstay Length | 435mm |
| Chainstay Length Horizontal | 433.6mm |
| Front-Center | 769mm |
| Front-Center Horizontal | 768.4mm |
| Wheelbase | 1202mm |
| Fork Offset/Rake | 46mm |
| Fork Length (Axle-To-Crown) | 532mm |
| Trail | 109.2mm very high |
| Mechanical Trail | 99.4mm |
| Wheel Flop | 41.2mm |
| Standover Height | 728mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 248.6mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 145.4mm |
Base Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 2.3in |
| Tire Outer Diameter | 700.8mm |
| Bike Length with Tires | 1902.8mm |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | 140mm |
| Suspension Sag | Unknown |
| Frame Material | Steel |
| Fork Material | N/A |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 159 cm to 177 cm |
Source:https://www.18bikes.co.uk/18-bikes-number-7-frameset-78399992.html