HONDA 4-STROKE
MODEL
YEARS
PISTON PART # WÖSSNER COMPR. RATIO OEM COMPR. RATIO
PISTON SIZE
OVERSIZE
RING SET
CRF 450 R
2017-2025
3502DA
CRF 450 RX
2017-2025
3502DB
CRF 450 R WORKS EDITION
2019-2023
14.3:1
13.5:1
95.95
STD
TPR96.00
CRF 450 RS
2022-2025
CRF 450 X
2019-2025
8968DA
95.96
STD
TPR96.00
CRF 450 L
2019-2020
8968DB
95.97
+0.01
TPR96.00
12.2:1
12.0:1
CRF 450 RL
2021-2025
8968DC
95.98
+0.02
TPR96.00
FT 500
1982-1984
8642D050
89.44
+0.50
895XSY-3
XL 500 S
1979-1982
8642D100
89.94
+1.00
900XSY-3
9.0:1
8.6:1
XR 500 R
8642D150
90.44
+1.50
905XSY-3
XR 500
8642D200
90.94
+2.00
910XSY-3
8574DA
96.94
STD
970XSY-3
8574DB
96.95
+0.01
970XSY-3
8574D050
97.44
+0.50
975XSY-3
8574D100
97.94
+1.00
980XSY-3
XR 600 R
1985-2000
9.3:1
9.0:1
8574D200
98.94
+2.00
990XSY-3
8574D300
99.94
+3.00
1000XSY-3
8574D400
100.94
+4.00
1010XSY-3
8574D500
101.94
+5.00
1020XSU-3
84
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