Cirex Ultimate
simplon
Trail
Cirex Ultimate is a carbon trail mountain bike (2024), by Simplon, part of the Cirex family. This setup will suit riders looking for a balanced off-road setup, leaning toward a balanced riding position, while being well suited to natural trails and mixed off-road terrain. The main strengths in the metrics are strong climbing friendliness for sustained uphill riding, strong speed potential on smoother terrain, and capable suspension support for rougher terrain. That said, the main trade-off is a firmer ride feel than comfort-first options and a value score that depends more on priorities than pure price efficiency. Compare this bike across categories on MatchBikes.com to see whether a nearby segment gives you a better fit.
Rating

Score Summary
Performance
Built for speed and efficiency
Fit
Dialed-in Fit & Comfort
Value
Specifications
General
Frame
Drivetrain
Wheels
Brakes
Cockpit
Seat
Geometry
| Measurement | SM | MD | LG | XL |
|---|---|---|---|---|
| Stack Reach Ratio | 1.416 mm | 1.363 mm | 1.316 mm | 1.274 mm |
| Bottom Bracket Height | 334 mm | 334 mm | 334 mm | 334 mm |
| Front Center | 702 mm | 732 mm | 762 mm | 792 mm |
| Rake | 44 mm | 44 mm | 44 mm | 44 mm |
| Trail | 107 mm | 107 mm | 107 mm | 107 mm |
| Stack | 596 mm | 608 mm | 620 mm | 632 mm |
| Reach | 421 mm | 446 mm | 471 mm | 496 mm |
| Top Tube Length | 577 mm | 605 mm | 627 mm | 655 mm |
| Seat Tube Angle | 75.4 ° | 75.4 ° | 75.9 ° | 75.9 ° |
| Seat Tube Length | 390 mm | 425 mm | 465 mm | 510 mm |
| Head Tube Angle | 67.4 ° | 67.4 ° | 67.4 ° | 67.4 ° |
| Head Tube Length | 89 mm | 102 mm | 115 mm | 128 mm |
| Chainstay Length | 435 mm | 435 mm | 435 mm | 435 mm |
| Wheelbase | 1134 mm | 1164 mm | 1194 mm | 1224 mm |
| Bottom Bracket Drop | 40 mm | 40 mm | 40 mm | 40 mm |
| Wheels | 29" | 29" | 29" | 29" |
| Rider Min Height | 158 cm | 168 cm | 178 cm | 186 cm |
| Rider Max Height | 171 cm | 180 cm | 189 cm | 199 cm |




























































