2021 Transition Bikes Spur Base
- Design
- Flat Bar, Full suspension
- Frame
- Carbon/Composite
- Fork
- Steel
- Suspension
- 120mm fork travel, 25% sag
- Features
- Disc brake
Geometry
SM | MD | LG | XL | |
Stack | 600mm | 610mm | 619mm | 632mm |
Reach | 425mm | 455mm | 480mm | 510mm |
Stack to Reach Ratio | 1.41:1 | 1.34:1 | 1.29:1 | 1.24:1 |
Seat Tube Length, C-T | 380mm | 410mm | 460mm | 500mm |
Top Tube Length, Effective/Horizontal HT Top | 569mm | 602mm | 630mm | 664mm |
Head Tube Angle | 66deg | 66deg | 66deg | 66deg |
Effective Seat Tube Angle, ETT HT Top | 76.7deg | 76.2deg | 75.9deg | 75.6deg |
Head Tube Length | 100mm | 110mm | 120mm | 135mm |
Bottom Bracket Drop | 40mm | 40mm | 40mm | 40mm |
Bottom Bracket Height | 332mm | 332mm | 332mm | 332mm |
Chainstay Length | 435mm | 435mm | 435mm | 435mm |
Chainstay Length Horizontal | 433.2mm | 433.2mm | 433.2mm | 433.2mm |
Front-Center | 724mm | 757.9mm | 786.9mm | 822.8mm |
Front-Center Horizontal | 722.8mm | 756.8mm | 785.8mm | 821.8mm |
Wheelbase | 1156mm | 1190mm | 1219mm | 1255mm |
Fork Offset/Rake | 44mm | 44mm | 44mm | 44mm |
Trail | 117.4mm very high | 117.4mm very high | 117.4mm very high | 117.4mm very high |
Mechanical Trail | 107.3mm | 107.3mm | 107.3mm | 107.3mm |
Wheel Flop | 43.6mm | 43.6mm | 43.6mm | 43.6mm |
Standover Height | 662mm | 667mm | 670mm | 677mm |
Tire to Pedal Spindle | 182mm 170 mm cranks | 215.9mm 170 mm cranks | 244.9mm 170 mm cranks | 280.9mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 162mm 170 mm cranks | 162mm 170 mm cranks | 162mm 170 mm cranks | 162mm 170 mm cranks |
Base Build
SM | MD | LG | XL | |
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 Width Max | 2.4in | 2.4in | 2.4in | 2.4in |
Tire Outer Diameter | 743.9mm | 743.9mm | 743.9mm | 743.9mm |
Bike Length with Tires | 1899.9mm | 1933.9mm | 1962.9mm | 1998.9mm |
Published Sizing Recommendations
Height | 5 ft 0 in to 5 ft 7 in | 5 ft 4 in to 6 ft 0 in | 5 ft 9 in to 6 ft 3 in | 6 ft 0 in to 6 ft 7 in |
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 Cross-country MTBSource:https://www.transitionbikes.com/Bikes_Spur.cfm