| YAMAHA YZ SERIES MOTOCROSS BIKES 1974 - 2001 | ||||||
| Year | Size | Model Designator | Model Number | Serial Number | Prod Qty | |
| 1974 | 80 | YZ80A | 462-000101 | 9661 | ||
| 1974 | 125 | YZ125A | 453-000101 | 7730 | ||
| 1974 | 250 | YZ250A | 431-000101 | 4104 | NOTE: The 1974 Models Were Silver W/Red Stripes And The Tank Was Held Down By Straps On The 125/250/360's. | |
| 1974 | 500 | YZ360A | 432-000101 | 631 | ||
| 1975 | 80 | YZ80B | 492-000101 | 18570 | ||
| 1975 | 125 | YZ125B | 453-100101 | 101620 | ||
| 1975 | 250 | YZ250B | 483-000101 | 2759 | NOTE: The 1975 Models Were Yellow W/Black+White "C" Checkerboard Stripes. The Tanks Were Held Down By Straps As Well. This Is The Last Year Of The "Strap Tank" And The First Year Of The Monoshock For The 125/250/360's. | |
| 1975 | 500 | YZ360B | 484-000101 | 1459 | ||
| 1976 | 80 | YZ80C | 598-000101 | 12750 | ||
| 1976 | 100 | YZ100C | 1J4-000101 | 3470 | ||
| 1976 | 125 | YZ125D | 537-000101 | 14044 | ||
| 1976 | 175 | YZ175C | 1L8-000101 | 1610 | ||
| 1976 | 250 | YZ250C | 509-100101 | 103405 | NOTE: The 1976 Models Were Yellow And All Were Monoshock Except The YZ80B. This Is The Last Year Of The Aluminum Tank And The First Year Of The Completely New Chassis/Engine Combination. | |
| 1976 | 500 | YZ400C | 510-100101 | 101838 | ||
| 1976 1/2 | 125 | YZ125X | 1G8-000101 | 7120 | ||
| 1977 | 80 | YZ80D | 1T0-000101 | 20290 | ||
| 1977 | 100 | YZ100D | 1J4-000101 | 103550 | ||
| 1977 | 125 | YZ125D | 1W1-000101 | 15610 | ||
| 1977 | 250 | YZ250D | 1W3-000101 | 6520 | NOTE: This Is The First Year Of The Plastic Tank, Used On All Bikes Except The YZ80, YZ100. It Was Also A Completely Different Frame/Monoshock/Engine Design For The 125/250/400 Models. Bob (Hurricane) Hannah Raced An Almost Completely Stock YZ250D In His Sucessful 1977 Season. | |
| 1977 | 500 | YZ400D | 1W4-000101 | 6720 | ||
| 1978 | 100 | YZ100E | 2K5-000101 | 6572 | ||
| 1978 | 125 | YZ125E | 2K6-000101 | 15080 | ||
| 1978 | 250 | YZ250E | 2K7-000101 | 9850 | ||
| 1978 | 500 | YZ400E | 2K8-000101 | 7406 | ||
| 1979 | 100 | YZ100F | 2W5-000101 | n/a | ||
| 1979 | 125 | YZ125F | 2X3-000101 | n/a | ||
| 1979 | 250 | YZ250F | 2X4-000101 | n/a | ||
| 1979 | 500 | YZ400F | 2X5-000101 | n/a | ||
| 1979 | 50 | YZ50G | 3R0?? | |||
| 1980 | 80 | YZ80G | 3R1?? | |||
| 1980 | 100 | YZ100G | 3R2-000101 | |||
| 1980 | 125 | YZ125G | 3N8? | 3R3-000101 | NOTE: This Is The Last Year Of Air Cooling on the YZ125 | |
| 1980 | 250 | YZ250G | 3R4-000101 | |||
| 1980 | 500 | YZ465G | 3R5-000101 | |||
| 1981 | 60 | YZ60H | 4V0-000101 | |||
| 1981 | 80 | YZ80H | 4V1-000101 | |||
| 1981 | 100 | YZ100H | 3R2-020101 | |||
| 1981 | 125 | YZ125H | 4V2-000101 | NOTE: This Is The First Year Of The Watercooling on the YZ125 | ||
| 1981 | 250 | YZ250H | 4V3-000101 | |||
| 1981 | 500 | YZ465H | 4V4-000101 | |||
| 1982 | 60 | YZ60J | ||||
| 1982 | 80 | YZ80J | 5X2-000101 | |||
| 1982 | 100 | YZ100J | 5X3-000101 | |||
| 1982 | 125 | YZ125J | 5X4-000101 | |||
| 1982 | 250 | YZ250J | 5X5-000101 | NOTE: This Is The First Year Of The Watercooling on the YZ250, New Mono-X design, White/red bikes in Canada | ||
| 1982 | 500 | YZ490J | 5X6-000101 | |||
| 1983 | 60 | YZ60K | ||||
| 1983 | 80 | YZ80K | 22W-000101 | |||
| 1983 | 100 | YZ100K | 5X3-060101 | |||
| 1983 | 125 | YZ125K | 24X-000101 | |||
| 1983 | 250 | YZ250K | 24Y-000101 | |||
| 1983 | 500 | YZ490K | 23X-000101 | |||
| 1984 | 80 | YZ80L | 39K-000101 | |||
| 1984 | 125 | YZ125L | 39W-000101 | NOTE: YZ60 & 100 Not made any more. | ||
| 1984 | 250 | YZ250L | 39X-000101 | |||
| 1984 | 500 | YZ490L | 40T-000101 | |||
| 1985 | 80 | YZ80N | 58T-00 | |||
| 1985 | 125 | YZ125N | 55Y-000101 | NOTE: This Is The First Year Of White/red bikes in USA | ||
| 1985 | 250 | YZ250N | 56A-00 | |||
| 1985 | 500 | YZ490N | 40T-00 | |||
| 1986 | 80 | YZ80S | 1LR-00 | |||
| 1986 | 125 | YZ125S | 1LX-00 | |||
| 1986 | 250 | YZ250S | 1LU-00 | |||
| 1986 | 500 | YZ490S | ||||
| 1987 | 80 | YZ80T | 2HF-00 | |||
| 1987 | 125 | YZ125T | 2HG-00 | |||
| 1987 | 250 | YZ250T | 2HH-00 | |||
| 1987 | 500 | YZ490T | 2HJ-00 | |||
| 1988 | 80 | YZ80U | ||||
| 1988 | 125 | YZ125U | 2V*-00 | |||
| 1988 | 250 | YZ250U | 2VM-00 | |||
| 1988 | 500 | YZ490U | 2HJ-00 | |||
| 1989 | 80 | YZ80W | ||||
| 1989 | 125 | YZ125W | 3JD-00 | |||
| 1989 | 250 | YZ250W | 3JE-00 | |||
| 1989 | 500 | YZ490W | 2HJ-00 | |||
| 1990 | 80 | YZ80A | ||||
| 1990 | 125 | YZ125A | 3SR-00 | |||
| 1990 | 250 | YZ250A | 3SP-00 | |||
| 1990 | 500 | YZ490A | 2HJ-00 | |||
| 1991 | 80 | YZ80B | ||||
| 1991 | 125 | YZ125B | 3XJ-00 | |||
| 1991 | 250 | YZ250B | 3XK-00 | |||
| 1992 | 80 | YZ80D | ||||
| 1992 | 125 | YZ125D | 4DB-00 | |||
| 1992 | 250 | YZ250D | 4DA-00 | |||
| 1993 | 80 | YZ80E | 4ES-00 | |||
| 1993 | 125 | YZ125E | 4EX-00 | |||
| 1993 | 250 | YZ250E | 4EW-00 | |||
| 1994 | 80 | YZ80F | 4ES-00 | |||
| 1994 | 125 | YZ125F | 4JY-00 | |||
| 1994 | 250 | YZ250F | 4JX-00 | |||
| 1995 | 80 | YZ80G | 4ES-00 | |||
| 1995 | 125 | YZ125G | 4PE-00 | |||
| 1995 | 250 | YZ250G | 4MX-00 | |||
| 1996 | 80 | YZ80 | 4ES-00 | |||
| 1996 | 125 | YZ125 | 4SS-00 | |||
| 1996 | 250 | YZ250 | 4SR-00 | |||
| 1997 | 80 | YZ80 | 4ES-00 | |||
| 1997 | 125 | YZ125 | 4SS-00 | |||
| 1997 | 250 | YZ250 | 4XL-00 | |||
| 1998 | 80 | YZ80 | ||||
| 1998 | 125 | YZ125 | 4SS-00 | |||
| 1998 | 250 | YZ250 | 4XL-00 98 | |||
| 1999 | 80 | YZ80 | ||||
| 1999 | 125 | YZ125L1 | 5ET/5HD-00 | |||
| 1999 | 250 | YZ250 | 5CU-00 | |||
| 2000 | 80 | YZ80 | ||||
| 2000 | 125 | YZ125 | 5ET-00 | |||
| 2000 | 250 | YZ250 | ||||
| 2001 | 80 | YZ80 | ||||
| 2001 | 125 | YZ125 | ||||
| 2001 | 250 | YZ250 | ||||
