cafe-racer / default rider 183 cm
Honda CB300R vs Honda GB350S ergonomics
Honda CB300R and Honda GB350S have modeled posture scores within three points for the 183 cm default rider. Treat this as a planning estimate; posture preference, data confidence, and a real test sit still matter.
Posture overlay
The default rider's modeled seated posture on each bike, solved from the same geometry as the score panels and overlaid on one ground line so seat height and reach differences are visible at a glance.
Modeled fit comparison
Honda CB300R
All contacts reached
Honda GB350S
All contacts reached
The modeled scores are within three points, so the result does not distinguish a higher-scoring bike. Treat the result as a planning estimate and compare each bike's geometry confidence before a real test sit.
Rider fit: reaching the ground
The Honda CB300R lists a 799 mm seat; the Honda GB350S lists 800 mm, within a few millimetres of each other. Seat height is only a first-pass ground-reach input. It does not establish safety or actual foot contact. Seat width, suspension sag, boots, mobility, load, and individual proportions can materially change the result.
Geometry snapshot
| Spec | Honda CB300R | Honda GB350S |
|---|---|---|
| Seat height | 799 mm | 800 mm |
| Wheelbase | 1,352 mm | 1,440 mm |
| Wet weight | 143 kg | 178 kg |
| Displacement | 286 cc | 348 cc |
Posture metrics
Knee angle
- Honda CB300R
- Sport (57.8 deg)
- Honda GB350S
- Sport (58.0 deg)
Hip angle
- Honda CB300R
- Neutral (96.1 deg)
- Honda GB350S
- Neutral (94.3 deg)
Elbow angle
- Honda CB300R
- Relaxed (143.3 deg)
- Honda GB350S
- Relaxed (143.3 deg)
Torso lean
- Honda CB300R
- Neutral (10.6 deg)
- Honda GB350S
- Neutral (11.9 deg)
Fit by rider height
Modeled ground contact by rider height, in 5 bands from 5'2" to 6'4" (158-193 cm).
| Rider height | Honda CB300R | Honda GB350S |
|---|---|---|
| 158 cm / 5'2" | Balls of feet | Balls of feet |
| 167 cm / 5'6" | Balls of feet | Balls of feet |
| 176 cm / 5'9" | Both feet flat | Both feet flat |
| 184 cm / 6'0" | Both feet flat | Both feet flat |
| 193 cm / 6'4" | Both feet flat | Both feet flat |
Modeled from each bike's seat height and a typical inseam-to-height ratio only — not a flat-footing guarantee. Real ground contact still depends on seat shape, suspension sag, footwear, and your own proportions. Confirm on the motorcycle.
Verdict
Honda CB300R and Honda GB350S are both cafe-racer bikes, so the practical question is which of their real differences you'd actually feel. Honda CB300R is about 35 kg lighter wet than Honda GB350S, which tends to show up most when paddling backward out of a parking spot or picking the bike up off the sidestand. Honda GB350S runs a 88 mm longer wheelbase than Honda CB300R, which typically trades some low-speed agility for extra stability at speed. None of that adds up to a clear overall winner in the modeled posture score, so the individual differences above are the more useful comparison than the headline number. Treat every figure here as a planning estimate: seat width, suspension sag, footwear, and your own proportions can shift the real feel more than a few millimetres or degrees on paper. Load your height and inseam into the simulator, then sit on both before you decide.
Kit out either bike
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