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  2. Yamaha YZ450F - Wikipedia

    en.wikipedia.org/wiki/Yamaha_YZ450F

    The bike had an 11,600 rpm redline [8] [better source needed] power and torque close to its 250 cc two-stroke rivals. [1] It benefited from engine compression braking, which allowed the engine to slow the bike down during deceleration, giving the brakes a rest. [1] The 1998 YZ400F was the first bike to come stock with a Keihin FCR carburetor.

  3. Honda XL250 - Wikipedia

    en.wikipedia.org/wiki/Honda_XL250

    The XL250, and the later XL350, laid the groundwork for the revolutionary big modern four-stroke-enduro wave. The XL250 is an "enduro" or dual-sport bike meaning it physically looks like a dirt bike, and shares many characteristics with a dirt bike, but it is street-legal and intended for on- and off-road use.

  4. Honda XR250R and XR250L - Wikipedia

    en.wikipedia.org/wiki/Honda_XR250R_and_XR250L

    They have four-stroke, SOHC four-valve 249 cc (15.2 cu in) single-cylinder engines. In 1981, the XR250 was updated with a single rear shock. [4] In 1984, the bike was introduced with Honda's Radial Four Valve Combustion Chamber (RFVC). [citation needed] It has a 110 kg (240 lb) claimed dry weight, [1] and a 36-inch seat height (96–04).

  5. Honda CRF series - Wikipedia

    en.wikipedia.org/wiki/Honda_CRF_series

    The full sized motocross bikes are equipped with liquid-cooled, single cylinder four-stroke engines that are available from 149 cc (9.1 cu in) to 449 cc (27.4 cu in). They now have dual-sport motorcycles. The more trail friendly CRF's have simple air-cooled engines, and are

  6. Honda XR series - Wikipedia

    en.wikipedia.org/wiki/Honda_XR_series

    The XR50 is a small four-stroke 50 cc (3.1 cu in) child's entry level motorcycle, introduced in 1969 and still in production as the CRF50 in 2021. [3] Originally it was called the Z-50, then Trail-50, the XR 50, CRF 50, and the mini dirt bike.

  7. List of Yamaha motorcycles - Wikipedia

    en.wikipedia.org/wiki/List_of_Yamaha_motorcycles

    The first bike manufactured by Yamaha was actually a copy of the German DKW RT 125; it had an air-cooled, two-stroke, single cylinder 125 cc engine [1] YC-1 (1956) was the second bike manufactured by Yamaha; it was a 175 cc single cylinder two-stroke. [1] YD-1 (1957) Yamaha began production of its first 250 cc, two-stroke twin, the YD1. [1]