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The YZ125 has a 124 cc (7.6 cu in) reed valve-inducted two-stroke engine. It was air cooled from 1974 to 1980, and liquid cooled since 1981. It has a Mikuni 38 mm TMX series carburetor. [6] The engine produces 35 hp (26 kW). [1] The YZ125 has been built with five- or six-speed manual sequential gearbox depending on model year.
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]
Yamaha engineer Yoshiharu Nakayama first came up with the idea of creating the first competitive four-stroke race motocross bike. [6] The Yamaha YZ400F was developed to fit into this category. It solved the power dilemma by borrowing superbike technology and giving the YZ a five-valve head, liquid cooling and a 12.5-1 compression ratio.
In 2014, Yamaha gave a facelift to the model, with a slightly tweaked fairing set, an upside-down front fork and a full LCD dashboard. The model launched without ABS, but it became an option for 2015. To comply with EU motorbike safety regulations, ABS on motorcycles was required on all new motorbikes in the EU from 2017. This may cause minor ...
Yamaha Y125Z or better known as Yamaha Z (in Europe, Thailand and Vietnam) is a 125 cc two-stroke moped or underbone motorcycle produced by Yamaha. Debuted in 1998 as a successor of Yamaha Y110SS , the Y125Z was the first two-stroke underbone motorcycle with an YEIS catalytic converter .
The original YZ250 of 1974 used an air-cooled 250cc two-stroke engine of 70 mm bore and a 64 mm stroke, which was improved semi-annually. The air-cooled motor was replaced in 1982 with a 249 cc liquid-cooled two-stroke reed-valved engine with a mechanical, rather than servo-driven, YPVS exhaust valve for a wider spread of power.
The Yamaha YZF-R6 is a sport bike, [1] produced by Yamaha as a 600 class from 1999 to 2020. From 2021, production availability is limited to a non-homologated race-only specification in most global markets, [2] [3] causing race organisers to realign their engine eligibility criteria to encourage other manufacturers having larger than 600 cc displacements to enter road-race competition from ...
The Yamaha YZ85 is a motorcycle designed specifically for off-road and motocross racing. 85 It is powered by an 84.7 cc single-cylinder, water-cooled, two-stroke, reed valve inducted engine and uses a 6-speed, constant-mesh, manual gearbox; with a multi-plate, wet-clutch. [1]