2024 SEKA Spear Base M
Build
700C/29 in × 28 mm
Insights
Average stack and reach vs trend of performance road bikes
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 543mm |
| Reach | 379mm |
| Stack to Reach Ratio | 1.43:1 |
| Seat Tube Length, C-T | 480mm |
| Top Tube Length, Effective/Horizontal Center | 518mm |
| Top Tube Slope | 9.1deg |
| Head Tube Angle | 72.9deg |
| Seat Tube Angle | 74deg |
| Head Tube Length | 136mm |
| Bottom Bracket Drop | 72mm |
| Bottom Bracket Height | 267mm |
| Chainstay Length | 410mm |
| Chainstay Length Horizontal | 403.6mm |
| Front-Center | 573.9mm |
| Front-Center Horizontal | 569.4mm |
| Wheelbase | 973mm |
| Fork Offset/Rake | 44mm |
| Fork Length (Axle-To-Crown) | 372mm |
| Trail | 58.3mm mid/neutral |
| Mechanical Trail | 55.7mm |
| Wheel Flop | 16.4mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 64.9mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 97mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 28mm |
| Tire Outer Diameter | 678mm |
| Bike Length with Tires | 1651mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Carbon/Composite |
| Fork Material | Carbon/Composite |
| Brake Type | Rim |
Published Sizing Recommendations
| Height | 170 cm to 180 cm |
Source:https://mp.weixin.qq.com/s/1tTF6ryX5Hz-rCWaa0TTHw