sport / default rider 183 cm
Buell 1125R vs Kawasaki KR-1S ergonomics
Buell 1125R and Kawasaki KR-1S land within a few ergonomic points for the default rider, so the better choice comes down to posture preference and bike category.
Fit verdict
Buell 1125R
All contacts reached
Kawasaki KR-1S
All contacts reached
The two bikes are close enough that posture preference matters more than the overall score.
Rider fit: reaching the ground
The Buell 1125R has a 775 mm seat; the Kawasaki KR-1S sits at 755 mm — a 20 mm difference. As a rule of thumb you flat-foot a bike when your inseam roughly matches its seat height: about 78 cm for the Buell 1125R and 76 cm for the Kawasaki KR-1S.
That makes the Kawasaki KR-1S the easier reach to the ground — the safer pick for shorter riders or anyone who wants both feet planted at a stop — while the Buell 1125R 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 | Buell 1125R | Kawasaki KR-1S |
|---|---|---|
| Seat height | 775 mm | 755 mm |
| Wheelbase | 1,375 mm | 1,365 mm |
| Wet weight | 211 kg | - |
| Displacement | 1,125 cc | 249 cc |
Posture metrics
Knee angle
- Buell 1125R
- Sport (60.7 deg)
- Kawasaki KR-1S
- Sport (60.7 deg)
Hip angle
- Buell 1125R
- Neutral (99.5 deg)
- Kawasaki KR-1S
- Neutral (99.7 deg)
Elbow angle
- Buell 1125R
- Relaxed (143.3 deg)
- Kawasaki KR-1S
- Relaxed (143.3 deg)
Torso lean
- Buell 1125R
- Forward (25.3 deg)
- Kawasaki KR-1S
- Forward (25.2 deg)