紅葉の峠 momiji no tōge · autumn pass
ナナハン 1983 · Japan
湾岸 wangan · 1978 · six cylinders
9,500rpm
01 · The bike バイク
CBX750 ナナハン.
The RC17 engine: a 747 cc air-cooled, double-overhead-cam inline four. It grew out of the CBX650 but got a stronger crank and crankcases, bigger valves worked by hydraulic tappets, and a bank of four 34 mm Keihin CV carbs. Torque peaks at 6.5 kg·m (63.7 N·m) at 7,500 rpm, power at 9,500. The same engine came back in Honda's Seven Fifty (RC42) from 1992 to 2008, bolted in solid where the CBX had it rubber-mounted.
Facts: Classic Bike Guide, “Honda CBX750” (Jan 2023) and Webike Japan's CBX750F spec sheet. Engine code RC17E.
02 · Scene archive 没シーン
Every idea, on film.
03 · The CBX family CBXファミリー
Every CBX. 1978 — 2008.
From the six-cylinder CBX to the Brazilian “7 Galo” and the 125s — every bike that wore the name, with its story. Tap one to read it.
04 · The register 登録
Own one? Put it on the map.
A fan register of surviving CBX750s: where they are, what they wear and who rides them. Photos first, stories second.
Follow along on Instagram: @cbx750p