RUBY
CTM
Trail
RUBY is an alloy electric trail mountain bike (2023), from CTM, in the Ruby series. This model is best for riders who prioritize comfort and confidence on longer off-road rides, with a comfort-leaning position, while being well suited to natural trails and mixed off-road terrain. The main strengths in the metrics are strong value-for-money versus many similar bikes, good fit flexibility for dialing in rider position, and strong speed potential on smoother terrain. At the same time, the main limitation versus more focused builds is a firmer ride feel than comfort-first options and battery range that is better for shorter daily use than long all-day outings. Use MatchBikes.com to compare this bike with nearby trail options.
Rating

Score Summary
Performance
Built for speed and efficiency
Fit
Dialed-in Fit & Comfort
Value
Battery
Specifications
General
Frame
Drivetrain
Wheels
Brakes
Cockpit
Seat
E-Bike Components
Geometry
| Measurement | MD | LG |
|---|---|---|
| Stack Reach Ratio | 1.47 mm | 1.45 mm |
| Front Center | 667 mm | 681 mm |
| Rake | 46 mm | 46 mm |
| Stack | 598 mm | 607 mm |
| Reach | 408 mm | 418 mm |
| Top Tube Length | 579 mm | 591 mm |
| Seat Tube Angle | 73 ° | 73 ° |
| Seat Tube Length | 420 mm | 470 mm |
| Head Tube Angle | 69 ° | 69 ° |
| Head Tube Length | 120 mm | 130 mm |
| Chainstay Length | 478 mm | 478 mm |
| Wheelbase | 1142 mm | 1156 mm |
| Wheels | 29" | 29" |
| Rider Min Height | 155 cm | 170 cm |
| Rider Max Height | 175 cm | 190 cm |


















































