2025 Opus Bike Horizon AL GRX 12
- Category
- All-road/Gravel
- Design
- Drop Bar, Rigid, non-suspension corrected
- Frame
- Aluminum
- Fork
- Carbon/Composite
- Features
- Disc brake
Geometry
XXS | XS | S | M | L | XL | |
Stack | 534mm | 553mm | 572mm | 590mm | 610mm | 630mm |
Reach | 372mm | 376mm | 380mm | 384mm | 392mm | 400mm |
Stack to Reach Ratio | 1.44:1 | 1.47:1 | 1.51:1 | 1.54:1 | 1.56:1 | 1.58:1 |
Seat Tube Length, Effective Unknown | 420mm | 450mm | 480mm | 510mm | 545mm | 580mm |
Top Tube Length, Effective/Horizontal Center | 515mm | 530mm | 544mm | 559mm | 578mm | 599mm |
Head Tube Angle | 69.75deg | 70.5deg | 71deg | 71.5deg | 72deg | 72.5deg |
Seat Tube Angle | 75deg | 74.5deg | 74deg | 73.5deg | 73deg | 72.5deg |
Head Tube Length | 113mm | 133mm | 153mm | 173mm | 193mm | 213mm |
Bottom Bracket Drop | 80mm | 78mm | 76mm | 74mm | 73mm | 72mm |
Bottom Bracket Height | 266mm | 268mm | 270mm | 272mm | 273mm | 274mm |
Chainstay Length | 425mm | 425mm | 427mm | 427mm | 429mm | 429mm |
Chainstay Length Horizontal | 417.4mm | 417.8mm | 420.2mm | 420.5mm | 422.7mm | 422.9mm |
Trail | — — | — — | — — | — — | — — | — — |
Mechanical Trail | — | — | — | — | — | — |
Wheel Flop | — | — | — | — | — | — |
Standover Height | 718mm | 743mm | 766mm | 791mm | 818mm | 847mm |
Pedal Spindle to Ground Clearance | 101mm 165 mm cranks | 98mm 170 mm cranks | 97.5mm 172.5 mm cranks | 99.5mm 172.5 mm cranks | 100.5mm 172.5 mm cranks | 99mm 175 mm cranks |
GRX 12 Build
XXS | 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 |
Tire Width | 35mm | 35mm | 35mm | 35mm | 35mm | 35mm |
Tire Outer Diameter | 692mm | 692mm | 692mm | 692mm | 692mm | 692mm |
Crank Length | 165mm | 170mm | 172.5mm | 172.5mm | 172.5mm | 175mm |
Handlebar Width | 380mm | 400mm | 420mm | 420mm | 440mm | 460mm |
Stem Length | 70mm | 80mm | 90mm | 100mm | 110mm | 110mm |
Published Sizing Recommendations
Height | 150 cm to 160 cm | 155 cm to 165 cm | 163 cm to 173 cm | 170 cm to 180 cm | 178 cm to 188 cm | 185 cm to 195 cm |
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.opusbike.com/en/bikes/horizon-en/horizon-grx-12-op-h12-en/