2026 X-Lab SP5+ Base

Category
Fitness
Design
Flat Bar, Rigid, non-suspension corrected
Frame
Aluminum
Fork
Carbon/Composite
Features
Disc brake, E-bike
Average stack and reachvs category
Somewhat aggressive stack and reachvs category

Geometry

Medium
Large
Stack
594mm
621mm
Reach
410mm
425mm
Stack to Reach Ratio
1.45:1
1.46:1
Seat Tube Length, Unknown
457mm
508mm
Top Tube Length, Effective/Horizontal Unknown
580mm
609mm
Top Tube Slope
16.1deg
13.2deg
Head Tube Angle
71deg
72deg
Seat Tube Angle
74deg
74deg
Head Tube Length
171mm
197mm
Bottom Bracket Drop
65mm
65mm
Bottom Bracket Height
286mm
286mm
Chainstay Length
445mm
445mm
Chainstay Length Horizontal
440.2mm
440.2mm
Front-Center
645mm
663mm
Front-Center Horizontal
640.8mm
659.8mm
Wheelbase
1081mm
1100mm
Fork Offset/Rake
46mm
51.5mm
Trail
72.2mm
high
59.9mm
mid/​neutral
Mechanical Trail
68.3mm
57mm
Wheel Flop
22.2mm
17.6mm
Standover Height
787mm
Tire to Pedal Spindle
124mm
170 mm cranks
142mm
170 mm cranks
Pedal Spindle to Ground Clearance
116mm
170 mm cranks
116mm
170 mm cranks

Base Build

Medium
Large
Wheel Size
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
Tire Width
40mm
40mm
Tire Outer Diameter
702mm
702mm
Bike Length with Tires
1783mm
1802mm
Stem Length
90mm

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
Category Trend
Fitness
Source:xds.co, xds.co