Wossner 2025

GASGAS 4-STROKE

MODEL

YEARS

PISTON PART # WÖSSNER COMPR. RATIO OEM COMPR. RATIO

PISTON SIZE

OVERSIZE

RING SET

EC 450

8585DA

94.95

STD

RIK95.00

FSE 450

8585DB

94.96

+0.01

RIK95.00

2003-2004

OEM

OEM

8585DC

94.97

+0.02

RIK95.00

EC 450 F

2005

8615DA

94.95

STD

RIK95.00

SM 450 R

2005

8615DB

94.96

+0.01

RIK95.00

OEM

OEM

FES 450

2005

EC 450 F

2006-2012

8638DA

96.95

STD

RIK97.00

SM 450 R

2007-2009

8638DB

96.96

+0.01

RIK97.00

OEM

OEM

FES 450

2006 - 2009

8638DC

96.97

+0.02

RIK97.00

8630DA

94.96

STD

RIK95.00/2

8630DB

94.97

+0.01

RIK95.00/2

EC 450 F

2013-2015

8630DC

12.3:1

12.3:1

94.98

+0.02

RIK95.00/2

8631DA

94.96

STD

RIK95.00/2

8631DB

94.97

+0.01

RIK95.00/2

EC 450 F

2013-2015

8631DC

13.5:1

12.3:1

94.98

+0.02

RIK95.00/2

48

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