YAMAHA 2-STROKE
MODEL
YEARS
PISTON PART #
PISTON SIZE
OVERSIZE
RING SET
STROKE
COMPRESSION HEIGHT
8133DA
67.94
STD
RSB6800
8133D050
68.44
+0.50
RSB6850
8133D075
68.69
+0.75
RSB6875
YZ 250
1983-1987
68.00
36.00
8133D100
68.94
+1.00
RSB6900
8133D150
69.44
+1.50
RSB6950
8133D200
69.94
+2.00
RSB7000
8175DA
67.94
STD
RSB6800
8175D050
68.44
+0.50
RSB6850
8175D100
68.94
+1.00
RSB6900
IT 250
1983
68.00
35.80
8175D150
69.44
+1.50
RSB6950
8175D200
69.94
+2.00
RSB7000
YZ 250
1988-1991
8134DA
67.94
STD
RSB6800
WR 250
1991
8134DB
67.95
+0.01
RSB6800
8134D050
68.44
+0.50
RSB6850
68.00
36.00
8134D100
68.94
+1.00
RSB6900
8134D150
69.44
+1.50
RSB6950
8134D200
69.94
+2.00
RSB7000
YZ 250
1992-1998
8023DA
67.94
STD
RSB6800
WR 250
1992-1997
8023DB
67.95
+0.01
RSB6800
8023DC
67.96
+0.02
RSB6800
68.00
36.00
8023D050
68.44
+0.50
RSB6850
8023D100
68.94
+1.00
RSB6900
8023D200
69.44
+2.00
RSB6950
276
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