The Yamaha YZ125 begins its history in 1974 - then it was an archaic (by modern standards) motorcycle with an air-cooled engine and double shock absorbers at the rear, which did not resemble a cross model in the modern sense. Only by the end of the 80s of the last century, the Yamaha YZ 125 acquires modern features, and by 1989 - an inverted fork. In our review, we will be looking at models starting in 2005, when the motorcycle received a modern aluminum frame.
Since 2006 the motorcycle has been equipped with the new KYB SSS (Speed-Sensitive System) front fork.
In 2007, the Yamaha YZ125 undergoes minor changes, the main of which are new petal brake discs, and in 2017 - an increased diameter of the front disc (from 250 to 270 mm).
The Yamaha YZ125 features a 2-stroke liquid-cooled engine with a power valve system (YPVS), an aluminum frame (since 2005), sports adjustable suspensions, an 8-liter fuel tank, a carburetor power system and 94 kg of curb weight.
In 2001, Yamaha introduced a 4-stroke version Yamaha YZ250F, which was intended to replace similar 2-stroke models, but the YZ125 is still sold in parallel and may be in the same racing class.
The main competitors of the Yamaha YZ 125 in the class:
Specifications Yamaha YZ125 (2005+):
|Frame||Aluminum half duplex|
|Engine type||1-cylinder, 2-stroke|
|Working volume||124 cm³|
|Bore / stroke||54.0 x 54.5 mm|
|Compression ratio||8.6 ~ 10.7: 1|
|Number of valves per cylinder||petal valve|
|Fuel supply system||Carburetor, 1x Mikuni TMX38|
|Maximum power||39.0 h.p. (28.7 kW) at 11,500 rpm|
|Maximum torque||25.5 Nm (2.6 kg-m) at 10,000 rpm|
|Front tire size||80 / 100-21 51M|
|Rear tire size||100 / 90-19 57M|
|Front brakes||1 disc, 250mm, 2-piston caliper - YZ125 (up to 2017)|
Single disc, 270 mm, 2-piston caliper - YZ125 (2017+)
|Rear brakes||1 disc, 245 mm, 1-piston caliper|
|Front suspension||48mm inverted fork (fully adjustable), 300mm travel|
|Rear suspension||Pendulum with monoshock (fully adjustable), stroke - 315 mm|
|Motorcycle length||2135 mm|
|Motorcycle width||827 mm|
|Motorcycle height||1315 mm|
|Saddle height||997 mm|
975 mm - YZ125 (2015+)
|Minimum ground clearance||386 mm|
365 mm - YZ125 (2015+)
|Acceleration to 100 km / h|
|Fuel tank capacity||8.0 l|
|Motorcycle weight (curb)||94 kg|
Yamaha Off-Road Motorcycle Lineup
|85-150 см³||YZ85 · WR125 · YZ125|
|200-250 см³||TW200 · TW225 · Serow 225 · Serow 250 · TT-R250 · WR250F · XG250 · YZ250 · YZ250F|
|400-500 см³||WR450F · YZ450F|