YAMAHA 4-STROKE
MODEL
YEARS
PISTON PART # WÖSSNER COMPR. RATIO OEM COMPR. RATIO
PISTON SIZE
OVERSIZE
RING SET
TT-R 125
2000-2018
8649DA
53.94
STD
540XKS-3
XT 125 X
2001-2008
8649D050
54.44
+0.50
545XKS-3
11.0:1
10.3:1
XT 125 XR
8649D100
54.94
+1.00
550XKS-3
TT 225
1986 - 1987
8933DA
69.93
STD
700XDS-3
XT 225 SEROW
1992 - 2000
8933D025
70.18
+0.25
702XDS-3
10.0:1
9.5:1
TT-R 225
2000 - 2004
8933D050
70.93
+0.50
710XDS-3
TT-R 230
2005 - 2024
8933D100
71.43
+1.00
715XDS-3
8724DA
73.95
STD
740XDS-3
8724D700
80.95
+7.00
RIK81.00A
XT 250 DUAL SPORT
2013-2024
12.0:1
9.5:1
4080DA
73.95
STD
740XDS-3
4080D400
77.95
+4.00
780XDS-3
XT 250 DUAL SPORT
2013-2024
4080D700
13.0:1
9.5:1
80.95
+7.00
RIK81.00A
8646DA
72.95
STD
730XDS-3
8646D050
73.45
+0.50
735XDS-3
TT-R 250
1999-2006
8646D100
10.2:1
10.2:1
73.95
+1.00
740XDS-3
8646D150
74.45
+1.50
745XDS-3
282
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