2021 Transition Bikes Spire Base XXL Low
Build
700C/29 in × 2.4 in
Insights
Average stack and reach vs trend of full-suspension all-mountain/enduro mtb bikes
Design deviates from other sizes of Transition Bikes Spire
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 651mm |
| Reach | 530mm |
| Stack to Reach Ratio | 1.23:1 |
| Seat Tube Length, Unknown | 490mm |
| Top Tube Length, Effective/Horizontal Unknown | 664mm |
| Head Tube Angle | 62.5deg |
| Effective Seat Tube Angle, Unknown | 76.7deg |
| Head Tube Length | 130mm |
| Bottom Bracket Drop | 32mm |
| Bottom Bracket Height | 340mm |
| Chainstay Length | 454mm |
| Chainstay Length Horizontal | 452.9mm |
| Front-Center | 901.7mm |
| Front-Center Horizontal | 901.1mm |
| Wheelbase | 1354mm |
| Fork Offset/Rake | 44mm |
| Fork Length (Axle-To-Crown) | 584mm |
| Trail | 144mm very high |
| Mechanical Trail | 127.8mm |
| Wheel Flop | 59mm |
| Standover Height | 740mm |
| Tire to Pedal Spindle Distance With 165 mm cranks | 364.7mm |
| Pedal Spindle to Ground Clearance With 165 mm cranks | 175mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 2.4in |
| Tire Outer Diameter | 743.9mm |
| Bike Length with Tires | 2097.9mm |
| Crank Length | 165mm |
| Handlebar Width | 800mm |
| Stem Length | 40mm |
| Suspension Type | Full suspension |
| Bar Type | Flat Bar |
| Fork Travel | 170mm |
| Rear Travel | 170mm |
| Suspension Sag | Unknown |
| Frame Material | Unknown |
| Fork Material | Unknown |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 6 ft 3 in to 6 ft 8 in |
Source:https://www.transitionbikes.com/Bikes_Spire.cfm