KTM 4-STROKE
MODEL
YEARS
PISTON PART # WÖSSNER COMPR. RATIO OEM COMPR. RATIO
PISTON SIZE
OVERSIZE
RING SET
SX-F 250
2013-2015
8874DA
77.96
STD
TPR78.00/2
EXC-F 250
2014-2022
8874DB
77.97
+0.01
TPR78.00/2
14.5:1
13.9:1
8874DC
77.98
+0.02
TPR78.00/2
SX-F 250
2016-2022
8923DA
77.96
STD
TPR78.00/2
XC-F 250
2016-2022
8923DB
77.97
+0.01
TPR78.00/2
14.4:1
14.4:1
8923DC
77.98
+0.02
TPR78.00/2
SX-F 250
2016-2022
8924DA
77.95
STD
TPR78.00/2
XC-F 250
2016-2022
8924DB
77.96
+0.01
TPR78.00/2
14.6:1
14.4:1
8924DC
77.97
+0.02
TPR78.00/2
SX-F 250
2016-2022
3505DA
77.95
STD
XC-F 250
2016-2022
3505DB
77.96
+0.01
14.8:1
14.4:1
OEM
77.97
+0.02
250 SX-F
2023 - 2025
4077DA
80.95
STD
RIK81.00/2
250 XC-F
2023 - 2025
4077DB
80.96
+0.01
RIK81.00/2
14.4:1
14.4:1
250 EXC-F
2024
4077DC
80.97
+0.02
RIK81.00/2
192
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