GASGAS 4-STROKE
MODEL
YEARS
PISTON PART # WÖSSNER COMPR. RATIO OEM COMPR. RATIO
PISTON SIZE
OVERSIZE
RING SET
MC 250 F
2021 - 2023
8923DA
77.96
STD
TPR78.00/2
EX 250 F
2021 - 2023
8923DB
77.97
+0.01
TPR78.00/2
14.4:1
14.4:1
8923DC
77.98
+0.02
TPR78.00/2
MC 250 F
2021 - 2023
8924DA
77.96
STD
TPR78.00/2
EX 250 F
2021 - 2023
8924DB
77.97
+0.01
TPR78.00/2
14.6:1
14.4:1
8924DC
77.98
+0.02
TPR78.00/2
MC 250 F
2021 - 2023
3505DA
77.96
STD
OEM
EX 250 F
2021 - 2023
3505DB
77.97
+0.01
OEM
14.8:1
14.4:1
MC 250 F
2024 - 2025
4077DA
80.95
STD
RIK81.00/2
EX 250 F
2024
4077DB
80.96
+0.01
RIK81.00/2
14.4:1
14.4:1
EC 250 F
2024
4077DC
80.97
+0.02
RIK81.00/2
MC 250 F
2024 - 2025
4090DA
80.95
STD
RIK81.00/2
EX 250 F
2024
4090DB
80.96
+0.01
RIK81.00/2
14.8:1
14.4:1
EC 250 F
2024
4090DC
80.97
+0.02
RIK81.00/2
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