KTM 4-STROKE
MODEL
YEARS
PISTON PART # WÖSSNER COMPR. RATIO OEM COMPR. RATIO
PISTON SIZE
OVERSIZE
RING SET
620 DUKE
1994 - 1997
8524DA
100.94
STD
1010XSY-3
620 LC-4
1994 - 1997
8524DB
100.95
+0.01
1010XSY-3
620 DUKE
1994 - 2007
8524DC
100.96
+0.02
1010XSY-3
620 SUPERMOTO
1994 - 2007
8524D100
101.94
+1.00
1020XSK-3
11.7:1
11.7:1
620 SX
1994 - 2007
620 SC
1998 - 2001
640 LC-4
1998 - 2007
625 SXC
2002 - 2007
660 SMC
2003-2009
8524D100
11.7:1
11.7:1
100.94
STD
1020XSK-3
690 DUKE
2016-2018
4096DA
12.6:1
12.6:1
104.94
STD
1050XSU
210
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