2025 Opus Bike Horizon AL GRX 12 XXS
Build
700C/29 in × 35 mm
Insights
Average stack and reach vs trend of all-road/gravel bikes
Design deviates from other sizes of Opus Bike Horizon AL
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 534mm |
| Reach | 372mm |
| Stack to Reach Ratio | 1.44:1 |
| Seat Tube Length, Effective Unknown | 420mm |
| Top Tube Length, Effective/Horizontal Center | 515mm |
| Head Tube Angle | 69.75deg |
| Seat Tube Angle | 75deg |
| Head Tube Length | 113mm |
| Bottom Bracket Drop | 80mm |
| Bottom Bracket Height | 266mm |
| Chainstay Length | 425mm |
| Chainstay Length Horizontal | 417.4mm |
| Trail | — — |
| Standover Height | 718mm |
| Tire to Pedal Spindle Distance With 165 mm cranks | — |
| Pedal Spindle to Ground Clearance With 165 mm cranks | 101mm |
GRX 12 Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 35mm |
| Tire Outer Diameter | 692mm |
| Crank Length | 165mm |
| Handlebar Width | 380mm |
| Stem Length | 70mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Aluminum |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 150 cm to 160 cm |
Source:https://www.opusbike.com/en/bikes/horizon-en/horizon-grx-12-op-h12-en/