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A four-stroke power valve is a device fitted to four-stroke engines that constantly adjusts the internal diameter of the exhaust system to better suit the speed of the engine. Yamaha was the first to develop such a system, called the Exhaust Ultimate Power Valve (EXUP). [1] It first appeared on the Yamaha FZR EXUP and was later used on many ...
It was the first Honda motorcycle to wear a CBR badge. The CBR400R (NC17) naked bike was launched in December 1983. The 4-valves per cylinder, liquid cooled, four-stroke, DOHC, inline-four engine has a rotational-speed valve stop mechanism "REV" (a prototype of Honda's VTEC system) that changed from two valves into four valves at 9,500 rpm.
The Honda Super Cub (or Honda Cub) is a Honda underbone motorcycle with a four-stroke single-cylinder engine ranging in displacement from 49 to 124 cc (3.0 to 7.6 cu in).. In continuous manufacture since 1958 with production surpassing 60 million in 2008, 87 million in 2014, and 100 million in 2017, [2] the Super Cub is the most produced motor vehicle * in history. [3]
The Honda CMX250, or Rebel 250 or Honda Peronist, is a 234 cc (14.3 cu in) cruiser-style motorcycle made by Honda on and off since 1985. It uses the same 234 cc (14.3 cu in) straight-twin engine as the Honda Nighthawk 250 standard .
The Honda Sport 90, Super 90, or S90, is a motorcycle produced by Honda from 1964 to 1969. [1] The Sport 90 was based on the Honda Super Cub and uses an 89.6 cc (5.47 cu in) single-cylinder OHC air-cooled engine. The engine links to a four-speed manual transmission. There is no tachometer but the speedometer indicates speed ranges for each gear.
Honda RS 150/Honda RSX/Honda Winner X The Honda Wave , also marketed as the Honda NF series (codename), Honda Innova in Europe, and Honda Supra in Indonesia, is a series of motorcycles manufactured by Honda that debuted in 1995 with an underbone design, having separate cosmetic plastic body panels over a structural steel tube chassis.
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The Honda CBX motorcycle (1978–1982) contains a 1047cc inline-6-cylinder engine. The engine used a DOHC 24-valve cam-over-bucket valvetrain to support high RPMs. The engine used a DOHC 24-valve cam-over-bucket valvetrain to support high RPMs.