Yamaha YZ 125 - HISTORY
The first Yamaha YZ 125 was launched in 1974. The YZ125 is a 125cc motocross bike, a discipline that was very popular at the time when rough terrains and off-road were synonymous with freedom. Since its debut, the YZ 125 has undergone numerous developments, becoming more and more powerful in terms of both engine and chassis. Among other things, they switched to monoshock absorbers, liquid cooling was introduced in 1981, disc brakes came in 1985 (initially only at the front, then on both wheels from 1988) and finally an upside-down fork in 1989. Numerous further developments to the chassis and engine followed (most notably in 1993, 1996 and 2002), culminating in the famous aluminium frame in 2005 and a brand new engine, which was retained until 2021. During these years, the suspension and brakes were slightly modified, while the fairing was completely modernized in 2015. Yamaha then upgraded the already very powerful engine in 2022 in order to adapt it to current standards. There was also a facelift, not only to freshen up the look, but also to accommodate the improved airbox.
The Yamaha 125 YZ is one of the most popular racing motorcycles ever and has many enthusiastic fans, both because of its great looks and its exceptional performance. A playful, agile motorcycle with a lively engine that inspires both amateur riders and experienced racers.
Yamaha 125 YZ - TECHNICAL DATA
Yamaha YZ125 ENGINE:
- Single-cylinder 2-stroke engine 124.8 cc
- YPVS valves
- Bore x stroke: 54 x 54.5 mm
- Compression ratio: n.c
- Liquid-cooled
- Carburetor Mikuni TMX 38 mm
- 6-speed gearbox
- Power: 39 hp
Yamaha YZ 125 chassis
- Double cradle aluminium frame
- Tank: 8 L
- Seat height: 994 mm
- Weight, empty: 86 kg
- Front brake: 270 mm brake disk / 2-piston brake caliper
- Rear brake: 245 mm brake disk / 1-piston brake caliper
- Front wheel: 80/100-21
- Rear wheel: 100/90-19
YZ 125 SUSPENSION
- Kayaba SSS upside-down fork 48 mm
- Fork travel: 300 mm
- Kayaba monoshock absorber
- Rear suspension travel: 315 mm
Yamaha YZ 125 IN OUR SHOP:
In our online store you will find a large selection of spare parts for your YZ 125.
For regular maintenance and minor repairs, we have engine oil, gear oil, spark plugs, levers and brake pads.
For larger projects, we have pistons, crankshafts, gearbox bearings and clutches for the engine, as well as fork seals, linkage bearings and other suspension parts.
For racing drivers, we also have tuning parts such as exhausts, reed valves, oversize brake kits or holeshot kits and other performance-enhancing parts in our catalog.
