2026 X-Lab RS5 Base
- Category
- Endurance Road
- Design
- Drop Bar, Rigid, non-suspension corrected
- Frame
- Aluminum
- Fork
- Carbon/Composite
- Features
- Disc brake
Geometry
XS | S | M | L | XL | XS | S | M | L | XL | |
Stack | 530mm | 553mm | 575mm | 599mm | 623mm | — | — | — | — | — |
Reach | 371mm | 375mm | 381mm | 387mm | 394mm | — | — | — | — | — |
Stack to Reach Ratio | 1.43:1 | 1.47:1 | 1.51:1 | 1.55:1 | 1.58:1 | — | — | — | — | — |
Seat Tube Length, C-T | 440mm | 480mm | 510mm | 540mm | 560mm | 440mm | 480mm | 510mm | 540mm | 560mm |
Top Tube Length, Actual C-C | 515mm | 530mm | 548mm | 568mm | 585mm | 515mm | 530mm | 548mm | 568mm | 585mm |
Top Tube Slope | 12.2deg | 10.2deg | 9.2deg | 8.6deg | 8.9deg | — | — | — | — | — |
Head Tube Angle | 71deg | 72deg | 73deg | 73deg | 73deg | 71deg | 72deg | 73deg | 73deg | 73deg |
Seat Tube Angle | 75deg | 74deg | 74deg | 73deg | 73deg | 75deg | 74deg | 74deg | 73deg | 73deg |
Head Tube Length | 115mm | 135mm | 155mm | 180mm | 205mm | 115mm | 135mm | 155mm | 180mm | 205mm |
Bottom Bracket Drop | 75mm | 75mm | 75mm | 75mm | 75mm | — | — | — | — | — |
Bottom Bracket Height | 268mm | 268mm | 268mm | 268mm | 268mm | — | — | — | — | — |
Chainstay Length | 420mm | 420mm | 420mm | 420mm | 420mm | — | — | — | — | — |
Chainstay Length Horizontal | 413.3mm | 413.3mm | 413.3mm | 413.3mm | 413.3mm | — | — | — | — | — |
Front-Center | 590mm | 592mm | 596mm | 609mm | 624mm | — | — | — | — | — |
Front-Center Horizontal | 585.8mm | 587.8mm | 590.8mm | 604.8mm | 619.8mm | — | — | — | — | — |
Wheelbase | 999mm | 1001mm | 1004mm | 1018mm | 1033mm | — | — | — | — | — |
Fork Offset/Rake | 54.9mm | 54.6mm | 54.4mm | 55mm | 55.7mm | 50mm | 50mm | 50mm | 50mm | 50mm |
Fork Length (On-Axis) | 386mm | 386mm | 386mm | 386mm | 386mm | — | — | — | — | — |
Trail | 60mm mid/​neutral | 54mm mid/​neutral | 48mm mid/​neutral | 47.3mm mid/​neutral | 46.7mm mid/​neutral | 65.2mm high | 58.9mm mid/​neutral | 52.6mm mid/​neutral | 52.6mm mid/​neutral | 52.6mm mid/​neutral |
Mechanical Trail | 56.8mm | 51.4mm | 45.9mm | 45.3mm | 44.6mm | 61.7mm | 56mm | 50.3mm | 50.3mm | 50.3mm |
Wheel Flop | 18.5mm | 15.9mm | 13.4mm | 13.2mm | 13mm | 20.1mm | 17.3mm | 14.7mm | 14.7mm | 14.7mm |
Standover Height | 725mm | 758mm | 784mm | 810mm | 831mm | — | — | — | — | — |
Tire to Pedal Spindle | 77mm 170 mm cranks | 79mm 170 mm cranks | 83mm 170 mm cranks | 96mm 170 mm cranks | 111mm 170 mm cranks | — 165 mm cranks | — 165 mm cranks | — 170 mm cranks | — 170 mm cranks | — 172.5 mm cranks |
Pedal Spindle to Ground Clearance | 98mm 170 mm cranks | 98mm 170 mm cranks | 98mm 170 mm cranks | 98mm 170 mm cranks | 98mm 170 mm cranks | — 165 mm cranks | — 165 mm cranks | — 170 mm cranks | — 170 mm cranks | — 172.5 mm cranks |
Base Build
XS | S | M | L | XL | XS | S | M | L | 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 | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 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 | 32mm | 32mm | 32mm | 32mm | 32mm | 32mm | 32mm | 32mm | 32mm | 32mm |
Tire Outer Diameter | 686mm | 686mm | 686mm | 686mm | 686mm | 686mm | 686mm | 686mm | 686mm | 686mm |
Bike Length with Tires | 1685mm | 1687mm | 1690mm | 1704mm | 1719mm | — | — | — | — | — |
Crank Length | — | — | — | — | — | 165mm | 165mm | 170mm | 170mm | 172.5mm |
Stem Length | — | — | — | — | — | 80mm | 80mm | 100mm | 100mm | 100mm |
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
Endurance RoadSource:https://xds.co/products/rs5