Wossner 2025

KTM 4-STROKE

MODEL

YEARS

PISTON PART # WÖSSNER COMPR. RATIO OEM COMPR. RATIO

PISTON SIZE

OVERSIZE

RING SET

520 EXC / SX

2000 - 2002

8637DA

94.95

STD

RIK95.00/2

525 EXC FACTORY RACING

2007

8637DB

94.96

+0.01

RIK95.00/2

525 EXC RACING

2003 - 2007

8637DC

94.97

+0.02

RIK95.00/2

525 EXC-G RACING

2003 - 2006

8637D200

12.5:1

11.0:1

525 MXC-G RACING

2003 - 2005

525 SMR

2004 - 2005

525 SX RACING

2003 - 2007

525 SX SUPERMOTO

2005

525 XC-G RACING

2006

EXC 530 R

2008-2011

8706DA

94.96

STD

RIK95.00/2

XCR-W 530

2008-2009

8706DB

94.97

+0.01

RIK95.00/2

XC-W 530 SIX DAYS

2010-2011

8706DC

94.98

+0.02

RIK95.00/2

12.5:1

11.9:1

EXC 530 CHAMPIONS EDITION

2010

8583DA

99.95

STD

1000ADS-2

8583DB

99.96

+0.01

1000ADS-2

SXS 540 RACING

2006

8583DC

12.0:1

12.0:1

99.97

+0.02

1000ADS-2

8704DA

99.95

STD

1000ADS-2

8704DB

99.96

+0.01

1000ADS-2

SM-R 560

2006-2007

8704DC

12.0:1

11.0:1

99.97

+0.02

1000ADS-2

208

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