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Development of New 50 cc Scooter Dunk

Article of Honda R&D Technical Review Vol.26 No.2


Honda developed the new 50 cc scooter Dunk to revitalize the Japanese market for small (50 cc or below) motorcycles.
The Dunk, whose target users are male high school students, took “Premium Sneakers” as its development concept. The development theme was “A scooter that expands the fun of commuting of younger people and their daily lives as well.” To realize that concept, the development team incorporated a design and a body packaging created under our new-concept. The 50 cm3 engine eSP (enhanced Smart Power), which was dedicatedly developed for this application, was adopted as well to realize a superior economy and environmental performances. By implementing those factors, it was pursued to create a new scooter in superior quality that would be appreciated not just by high school students but also by a broader range of customers.


(1) Sugioka, K., Sekiya, Y., Hayashi, H., Kasa, K., Nakajima, H., Toriyama, M.: Development of Scooter with 4-Stroke Engine - GIORNO Crea, HONDA R&D Technical Review, Vol.11, No.2, p. 9-14 (in Japanese)
(2) http://jamaserv.jama.or.jp/newdb/index.html
(3) http://www.jama-english.jp/release/release/2012/120404-4.html
(4) http://www.stat.go.jp/data/kokusei/2010/
(5) https://www.npa.go.jp/toukei/menkyo/index.htm
(6) http://world.honda.com/Global-125cc-engine/Tech-details/page05.html
(7) Moriyama, R., Muraoka, Y., Fujihara, K.: Development of Positive Crankcase Ventilation System for Four-stroke Engine Used in Small Motorcycles, Honda R&D Technical Review, Vol.16, No.2, p.165-170

Author (organization or company)

Makoto MITSUKAWA(Motorcycle R&D Center)、Shuji HIRAYAMA(Motorcycle R&D Center)、Mamoru OTSUBO(Motorcycle R&D Center)、Yasushi TATEISHI(Motorcycle R&D Center)

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