THEOS i50 SH 29″/27.5″ 630Wh
Kellys
Enduro
THEOS i50 SH 29″/27.5″ 630Wh is an alloy electric enduro mountain bike (2023), by Kellys, from the Theos lineup. Rider-wise, it fits riders who prioritize comfort and confidence on longer off-road rides, leaning toward a comfort-leaning position, and is aimed at more technical trails and rougher terrain. Its strongest points in the MatchBikes metrics are strong value-for-money versus many similar bikes, capable suspension support for rougher terrain, and good fit flexibility for dialing in rider position. At the same time, the main limitation versus more focused builds is a firmer ride feel than comfort-first options and less emphasis on outright speed than speed-focused builds. 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
Battery
Specifications
General
Frame
Drivetrain
Wheels
Brakes
Cockpit
Seat
E-Bike Components
Geometry
| Measurement | MD | LG | XL |
|---|---|---|---|
| Wheels | 700 | 700 | 700 |
| Rider Min Height | 165 cm | 175 cm | 185 cm |
| Rider Max Height | 177 cm | 188 cm | 198 cm |


















































