YAMAHA
YZ250
Yamaha YZ250
- Manufacturer
- YAMAHA
- Model
- YZ250
- Year
- 1974
- Type
- Motocross
- Origin
- Japan
COMPETITION MACHINE
01 — Overview
A production replica of the YZM250 (0W12) works machine that won the 1973 Motocross World Championship and All Japan Motocross Championship titles. It was the first production model with Monocross suspension, hence the name YZ250M. A competition-only machine with an air-cooled 246 cm³ two-stroke single and a 5-speed gearbox.
- MAKER
- YAMAHA
- PRODUCTION
- 1974
- ERA
- 1970s
- CATEGORY
- MotocrossRace MachineVintage
02 — Engine
ENGINE
Single
One cylinder: light, simple and characterful. Found everywhere from commuters to off-road machines and classics. A power stroke every revolution: light, simple and explosive — and, as emissions rules tightened, gradually retired from road machines.General description of the layout
| Engine layout | Single[1] |
|---|---|
| Cycle | Two-stroke[1] |
| Displacement | 246 cc[1] |
| Cooling | Air-cooled[1] |
| Max. power | 25 kW / 8,000 rpm[1] |
| Max. power | 34 PS / 8,000 rpm[1] |
| Transmission | 5-speed[1] |
03 — Specifications
TECHNICAL SPECIFICATIONS
Every figure is sourced. Unverified values are not published.
04 — Generations
GENERATION HISTORY
1974 (YZ250M, first Monocross production model)1974–
Generations, model years and market variants (Model → Generation → Variant) are added as they are verified.
05 — Motorsport
MOTORSPORT CONTEXT
MOTOCROSS
Machines for closed-course motocross competition.
RACE MACHINE
Competition-only machines, listed separately from road models.
VINTAGE
Machines from the post-war decades that laid the foundations of Japan's motorcycle industry.
A competition-only machine, recorded separately from road models. Results are published only where verified against official records.
06 — Gallery
GALLERY
RELATED MOTORCYCLES
07
08 — Sources
SOURCES
- [1]1974 YZ250 - Communication Plaza CollectionYamaha Motor Co., Ltd. · museum · accessed 2026-09-26
09 — Image Credits
PHOTO CREDITS
- Creator
- Rainmaker47
- License
- CC BY-SA 4.0 · Wikimedia Commons
- Rainmaker47, CC BY-SA 4.0, via Wikimedia Commons