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Rider Height
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motocross / default rider 183 cm

Yamaha YZ65 vs Yamaha YZ80 ergonomics

Yamaha YZ65 and Yamaha YZ80 land within a few ergonomic points for the default rider, so the better choice comes down to posture preference and bike category.

Fit verdict

Yamaha YZ65

95Comfortable

All contacts reached

Yamaha YZ80

95Comfortable

All contacts reached

The two bikes are close enough that posture preference matters more than the overall score.

Rider fit: reaching the ground

The Yamaha YZ65 has a 754 mm seat; the Yamaha YZ80 sits at 800 mm — a 46 mm difference. As a rule of thumb you flat-foot a bike when your inseam roughly matches its seat height: about 75 cm for the Yamaha YZ65 and 80 cm for the Yamaha YZ80.

That makes the Yamaha YZ65 the easier reach to the ground — the safer pick for shorter riders or anyone who wants both feet planted at a stop — while the Yamaha YZ80 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

Geometry comparison for Yamaha YZ65 and Yamaha YZ80
SpecYamaha YZ65Yamaha YZ80
Seat height754 mm800 mm
Wheelbase1,140 mm1,235 mm
Wet weight61 kg-
Displacement65 cc83 cc

Posture metrics

Knee angle

Yamaha YZ65
Sport (57.4 deg)
Yamaha YZ80
Sport (57.6 deg)

Hip angle

Yamaha YZ65
Neutral (101.1 deg)
Yamaha YZ80
Neutral (98.8 deg)

Elbow angle

Yamaha YZ65
Relaxed (143.3 deg)
Yamaha YZ80
Relaxed (143.3 deg)

Torso lean

Yamaha YZ65
Neutral (7.3 deg)
Yamaha YZ80
Neutral (8.8 deg)