2026 REI Coop ADV 2.1 Base
- Category
- All-road/Gravel
- Design
- Drop Bar, Rigid, non-suspension corrected
- Frame
- Aluminum
- Fork
- Carbon/Composite
- Features
- Disc brake
Geometry
XS | S | M | L | XL | |
Stack | 542mm | 560mm | 581mm | 602mm | 623mm |
Reach | 365mm | 375mm | 385mm | 393.4mm | 403.4mm |
Stack to Reach Ratio | 1.48:1 | 1.49:1 | 1.51:1 | 1.53:1 | 1.54:1 |
Seat Tube Length, C-T | 385mm | 435mm | 470mm | 500mm | 530mm |
Top Tube Length, Effective/Horizontal Center | 520.4mm | 536mm | 556.5mm | 571.7mm | 587.9mm |
Top Tube Slope | 20.1deg | 16deg | 14.1deg | 12.9deg | 11.7deg |
Head Tube Angle | 69.8deg | 71deg | 71.5deg | 71.5deg | 72deg |
Seat Tube Angle | 74deg | 74deg | 73.5deg | 73.5deg | 73.5deg |
Head Tube Length | 100mm | 114mm | 138mm | 160mm | 180mm |
Bottom Bracket Height | — | — | — | — | — |
Chainstay Length | 438mm | 438mm | 438mm | 438mm | 438mm |
Wheelbase | 1023mm | 1028mm | 1041mm | 1057.5mm | 1069mm |
Fork Offset/Rake | 51mm | 51mm | 51mm | 51mm | 51mm |
Trail | 76.6mm high | 68.6mm high | 65.3mm high | 65.3mm high | 62.1mm mid/neutral |
Mechanical Trail | 71.9mm | 64.9mm | 62mm | 62mm | 59mm |
Wheel Flop | 24.8mm | 21.1mm | 19.7mm | 19.7mm | 18.2mm |
Standover Height | 689.5mm | 728.2mm | 758.1mm | 788.1mm | 814.3mm |
Base Build
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 |
Tire Width | 45mm | 45mm | 45mm | 45mm | 45mm |
Tire Outer Diameter | 712mm | 712mm | 712mm | 712mm | 712mm |
Bike Length with Tires | 1735mm | 1740mm | 1753mm | 1769.5mm | 1781mm |
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
All-road/GravelSource:https://www.rei.com/product/254161/co-op-cycles-adv-21-bike