PROX offers a steel intake valve conversion kit designed to meet the needs of FANTIC TFES 250cc, GAS GAS ECF 250cc, GAS GAS ECF 300cc, YAMAHA SRSP 250cc, YAMAHA SR 250cc, YAMAHA WRF 250cc, YAMAHA YZF 250cc motorcycles. Made from high-grade steel, this kit offers exceptional resistance to heat and mechanical stress generated by high revs. Thanks to its precision machining and optimum fit, it ensures perfect sealing, smoother combustion and longer service life than original valves. Ideal for motocross, enduro or competition riders, it guarantees consistent, reliable performance, even in the most extreme conditions.

Fits on :

FANTIC TFES CABALLERO 250 2014

FANTIC TFES CABALLERO 250 2013

FANTIC TFES 250 2015

GAS GAS ECF REPLICA CAMI 250 2014

GAS GAS ECF SIX DAYS 250 2012

GAS GAS ECF 250 2015

GAS GAS ECF 250 2014

GAS GAS ECF 250 2013

GAS GAS ECF 250 2012

GAS GAS ECF 250 2011

GAS GAS ECF 250 2010

GAS GAS ECF 300 2015

GAS GAS ECF 300 2014

GAS GAS ECF 300 2013

YAMAHA SRSP 250 1991

YAMAHA SRSP 250 1990

YAMAHA SR 250 1998

YAMAHA SR 250 1997

YAMAHA SR 250 1996

YAMAHA SR 250 1995

YAMAHA SR 250 1994

YAMAHA SR 250 1993

YAMAHA SR 250 1992

YAMAHA SR 250 1991

YAMAHA SR 250 1990

YAMAHA SR 250 1989

YAMAHA SR 250 1988

YAMAHA SR 250 1987

YAMAHA SR 250 1986

YAMAHA SR 250 1985

YAMAHA SR 250 1984

YAMAHA SR 250 1983

YAMAHA SR 250 1982

YAMAHA SR 250 1981

YAMAHA SR 250 1980

YAMAHA WRF 250 2002

YAMAHA WRF 250 2001

YAMAHA WRF 250 2004

YAMAHA WRF 250 2003

YAMAHA WRF 250 2005

YAMAHA WRF 250 2006

YAMAHA WRF 250 2007

YAMAHA WRF 250 2014

YAMAHA WRF 250 2013

YAMAHA WRF 250 2012

YAMAHA WRF 250 2011

YAMAHA WRF 250 2010

YAMAHA WRF 250 2009

YAMAHA WRF 250 2008

YAMAHA YZF 250 2002

YAMAHA YZF 250 2001

YAMAHA YZF 250 2003

YAMAHA YZF 250 2004

YAMAHA YZF 250 2005

YAMAHA YZF 250 2006

YAMAHA YZF 250 2009

YAMAHA YZF 250 2008

YAMAHA YZF 250 2007

YAMAHA YZF 250 2013

YAMAHA YZF 250 2012

YAMAHA YZF 250 2011

YAMAHA YZF 250 2010