electric / default rider 183 cm
Alta Motors Redshift EXR vs Alta Motors Redshift SM ergonomics
Alta Motors Redshift EXR and Alta Motors Redshift SM land within a few ergonomic points for the default rider, so the better choice comes down to posture preference and bike category.
Fit verdict
Alta Motors Redshift EXR
All contacts reached
Alta Motors Redshift SM
All contacts reached
The two bikes are close enough that posture preference matters more than the overall score.
Rider fit: reaching the ground
The Alta Motors Redshift EXR has a 927 mm seat; the Alta Motors Redshift SM sits at 902 mm — a 25 mm difference. As a rule of thumb you flat-foot a bike when your inseam roughly matches its seat height: about 93 cm for the Alta Motors Redshift EXR and 90 cm for the Alta Motors Redshift SM.
That makes the Alta Motors Redshift SM the easier reach to the ground — the safer pick for shorter riders or anyone who wants both feet planted at a stop — while the Alta Motors Redshift EXR gives taller riders more legroom and a more open knee bend. Load your own height and inseam into the simulator to see exactly how each one fits you.
Geometry snapshot
| Spec | Alta Motors Redshift EXR | Alta Motors Redshift SM |
|---|---|---|
| Seat height | 927 mm | 902 mm |
| Wheelbase | 1,492 mm | 1,438 mm |
| Wet weight | 124 kg | 128 kg |
| Displacement | - | - |
Posture metrics
Knee angle
- Alta Motors Redshift EXR
- Sport (58.2 deg)
- Alta Motors Redshift SM
- Sport (58.0 deg)
Hip angle
- Alta Motors Redshift EXR
- Neutral (93.0 deg)
- Alta Motors Redshift SM
- Neutral (94.3 deg)
Elbow angle
- Alta Motors Redshift EXR
- Relaxed (143.3 deg)
- Alta Motors Redshift SM
- Relaxed (143.3 deg)
Torso lean
- Alta Motors Redshift EXR
- Neutral (12.7 deg)
- Alta Motors Redshift SM
- Neutral (11.9 deg)