Underbone

Plastic panels and covers are widely used on modern underbones, such as a Suzuki FX125

An underbone is a motorcycle that uses structural tube framing with an overlay of plastic or non-structural body panels and contrasts with monocoque or unibody designs where pressed steel serves both as the vehicle's structure and bodywork.

Underbone may also refer to a class of lightweight motorcycles that use the construction type, known colloquially as step-throughs, mopeds or scooters.

单词	Underbone
释义	Underbone 英语百科 Underbone An underbone is a motorcycle that uses structural tube framing with an overlay of plastic or non-structural body panels and contrasts with monocoque or unibody designs where pressed steel serves both as the vehicle's structure and bodywork. Underbone may also refer to a class of lightweight motorcycles that use the construction type, known colloquially as step-throughs, mopeds or scooters.
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