YAMAHA 2-STROKE
MODEL
YEARS
PISTON PART #
PISTON SIZE
OVERSIZE
RING SET
STROKE
COMPRESSION HEIGHT
8070DA
65.94
STD
RSB6600
8070D040
66.40
+0.40
RSB6640
8070D080
66.80
+0.80
RSB6680
8070D100
66.94
+1.00
RSB6700
8070D150
67.44
+1.50
RSB6750
DT 200 R
1989-1991
8070D200
67.94
+2.00
RSB6800
57.00
29.90
8070D250
68.44
+2.50
RSB6850
8070D600
71.94
+6.00
RSB7200
8070D650
72.44
+6.50
RSB7250
8070D700
72.94
+7.00
RSB7300
8070D800
73.94
+8.00
RSB7400
8070D080
66.80
+0.80
RSB6680
8070D100
66.94
+1.00
RSB6700
8070D150
67.44
+1.50
RSB6750
WR 200
1992-1998
57.00
29.90
8070D200
67.94
+2.00
RSB6800
8070D250
68.44
+2.50
RSB6850
YZ 250
1976-1979
8179DA
69.94
STD
RSB7000
IT 250
1978-1980
8179D050
70.44
+0.50
RSB7050
64.00
33.00
TY 250
1974-1980
8179D100
70.94
+1.00
RSB7100
MX 250
1973-1975
8179D150
71.44
+1.50
RSB7150
DT 250
1974-1979
8179D200
71.94
+2.00
RSB7200
YZ 250
1980-1982
8180DA
69.94
STD
RSB7000
IT 250
1981-1982
8180D050
70.44
+0.50
RSB7050
8180D075
70.69
+0.75
RSB7075
64.00
33.00
8180D100
70.94
+1.00
RSB7100
8180D150
71.44
+1.50
RSB7150
8180D200
71.94
+2.00
RSB7200
274
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