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The Derbi GPR 125 is a street motorcycle sold by Derbi - Nacional Motor since 2005. [2] The original GPR125 was powered by a single-cylinder two-stroke engine with a steel lined cast iron cylinder manufactured by Yamaha, but was superseded in 2010 by an all-new DOHC four-stroke four-valve model.
Already previewed in the competitions of the second half of 1966, in 1967 the last of the "RA" series was officially launched, the RA31, with a four-cylinder V engine with two crankshafts, connected to each other by means of a gear. where the cylinders are liquid-cooled and with a useful arc of use of the engine ranging from 15,000 to 17,000 rpm.
The Yamaha YBR 125 is a light motorcycle made by Yamaha that succeeds its previous model for this segment, the Yamaha SR125. Introduced in 2005, it comes in naked, [1] faired and 'custom' [2] variants. It has a single-cylinder, air-cooled, four-stroke engine, displacing 124 cc (7.6 cu in).
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]
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.
The Yamaha TT-R125 is a trail bike that Yamaha produced from 2000–present. [1] The names TT, TT-R, and XT have been used for semi off-road and street versions in different markets and in different eras. It is mainly used for family recreation and off-road trails. It has a soft suspension, wide seat and high ground clearance.
At the professional level, bikes are split up into two levels based on their displacements: MX and MX Lite. The MX Lite class contains 125cc two-stroke engines and 250cc four-stroke engines, while the MX class pits 250cc two-stroke engines against 450cc four-stroke engines. The actual displacement for both four-strokes and two-strokes can be ...
The Yamaha YZ125 is a motocross racing motorcycle with a two-stroke 124.9 cc (7.62 cu in) displacement single-cylinder engine made by Yamaha since 1974. It is available to the public. For the first two years it was made with dual rear shocks, then changing to a monoshock. [3]