2021 Transition Bikes Spur Base

Design
Flat Bar, Full suspension
Frame
Carbon/Composite
Fork
Steel
Suspension
120mm fork travel, 25% sag
Features
Disc brake
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category

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"
622 mm BSD
700C/29"
622 mm BSD
700C/29"
622 mm BSD
700C/29"
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 Scale
Source:https://www.transitionbikes.com/Bikes_Spur.cfm