VERTEX piston ring set Ø 66.40 mm for TM RACING MX 250, KTM EXC 250, HONDA CR 250 R and YAMAHA YZ 250 from 1986 to 2019

Check before ordering

• Diameter: Ø 66.40 mm

VERTEX offers this piston ring set for TM RACING MX 250, KTM EXC 250, HONDA CR 250 R and YAMAHA YZ 250 from 1986 to 2019. Rings are thin steel bands sitting in the piston grooves. They press against the cylinder wall to hold compression and scrape oil.

Why replace the rings?

The benefits:

• Regain compression and power.
• Reduce oil consumption and smoke.
• A cheap fix when piston and cylinder are still within spec.

Why choose VERTEX?

Vertex has made its pistons in Italy since 1953 and has supplied KTM’s original pistons since 1996: molybdenum-disulphide coated skirt and Japanese rings. Its two-stroke pistons are cast from an 18 % silicon alloy. Its four-stroke pistons are forged from 2618 alloy.

When should you replace the piston rings?

Harder starting, loss of power, blue smoke, oil consumption or a knock when cold: these are the signs of a tired top end.

Recommended hours for new rings (manufacturer recommendation for the Yamaha YZ 250 two-stroke):

• Racing: every 7.5 h (about 3 races).
• Leisure: no Yamaha figure; Cross-Mania guideline: compression check at around 15 h.
• Honda CR 125 R / CR 250 R: racing: every 7.5 h.

Specifications and fitting tips

• Displacement: 250 cm³
• Engine: 2-stroke
• Replacement piston ring
• Nitrided or chrome-plated for improved wear resistance and longer life

Cross-Mania tip: Check the ring end gap in the cylinder before fitting and respect the fitting direction (mark facing up).

Also needed with this part

• Piston : PROX · ATHENA
• Top-end gasket kit : ATHENA · MOOSE
• 2-stroke oil : LIQUI MOLY 1 L 3065 · LIQUI MOLY 1 L 3063

Compatibility

Check the exact model and year of your bike in the list below before ordering.

Fits:
BETA RR 250 2019
BETA RR 250 2018
BETA RR 250 2017
BETA RR 250 2016
BETA RR 250 2015
BETA RR 250 2014
BETA RR 250 2013
GAS GAS EC 250 2007
GAS GAS EC 250 2006
GAS GAS EC 250 2005
GAS GAS EC 250 2004
GAS GAS EC 250 2003
GAS GAS EC 250 2002
HONDA CR 250 R 2007
HONDA CR 250 R 2006
HONDA CR 250 R 2005
HONDA CR 250 R 2004
HONDA CR 250 R 2003
HONDA CR 250 R 2002
HONDA CR 250 R 2001
HONDA CR 250 R 2000
HONDA CR 250 R 1999
HONDA CR 250 R 1998
HONDA CR 250 R 1997
HONDA CR 250 R 1996
HONDA CR 250 R 1995
HONDA CR 250 R 1994
HONDA CR 250 R 1993
HONDA CR 250 R 1992
HONDA CR 250 R 1991
HONDA CR 250 R 1990
HONDA CR 250 R 1989
HONDA CR 250 R 1988
HONDA CR 250 R 1987
HONDA CR 250 R 1986
HUSQVARNA CR 250 2006
HUSQVARNA CR 250 2005
HUSQVARNA CR 250 2004
HUSQVARNA CR 250 2003
HUSQVARNA CR 250 2002
HUSQVARNA CR 250 2001
HUSQVARNA CR 250 2000
HUSQVARNA CR 250 1999
HUSQVARNA CR 250 1998
KAWASAKI KX 250 2008
KAWASAKI KX 250 2007
KAWASAKI KX 250 2006
KAWASAKI KX 250 2005
KAWASAKI KX 250 2004
KAWASAKI KX 250 2003
KAWASAKI KX 250 2002
KAWASAKI KX 250 2001
KAWASAKI KX 250 2000
KAWASAKI KX 250 1999
KAWASAKI KX 250 1998
KAWASAKI KX 250 1997
KAWASAKI KX 250 1996
KAWASAKI KX 250 1995
KAWASAKI KX 250 1994
KAWASAKI KX 250 1993
KAWASAKI KX 250 1992
KTM EXC 250 2012
KTM EXC 250 2011
KTM EXC 250 2010
KTM EXC 250 2009
KTM EXC 250 2008
KTM EXC 250 2007
KTM EXC 250 2006
KTM EXC 250 2005
KTM EXC 250 2004
KTM EXC 250 2003
KTM EXC 250 2002
KTM EXC 250 2001
KTM EXC 250 2000
KTM SX 250 2012
KTM SX 250 2011
KTM SX 250 2010
KTM SX 250 2009
KTM SX 250 2008
KTM SX 250 2007
KTM SX 250 2006
KTM SX 250 2005
KTM SX 250 2004
KTM SX 250 2003
KTM SX 250 2002
KTM SX 250 2001
KTM SX 250 2000
SUZUKI RM 250 2012
SUZUKI RM 250 2011
SUZUKI RM 250 2010
SUZUKI RM 250 2009
SUZUKI RM 250 2008
SUZUKI RM 250 2007
SUZUKI RM 250 2006
SUZUKI RM 250 2005
SUZUKI RM 250 2004
SUZUKI RM 250 2003
SUZUKI RM 250 2002
SUZUKI RM 250 2001
SUZUKI RM 250 2000
SUZUKI RM 250 1999
SUZUKI RM 250 1998
SUZUKI RM 250 1997
SUZUKI RM 250 1996
TM RACING CROSS 250 2002
TM RACING CROSS 250 2001
TM RACING CROSS 250 2000
TM RACING CROSS 250 1999
TM RACING CROSS 250 1998
TM RACING CROSS 250 1997
TM RACING CROSS 250 1996
TM RACING CROSS 250 1995
TM RACING EN 250 2018
TM RACING EN 250 2017
TM RACING EN 250 2016
TM RACING EN 250 2015
TM RACING EN 250 2014
TM RACING EN 250 2013
TM RACING EN 250 2012
TM RACING EN 250 2011
TM RACING EN 250 2010
TM RACING EN 250 2008
TM RACING EN 250 2007
TM RACING EN 250 2006
TM RACING EN 250 2005
TM RACING EN 250 2004
TM RACING EN 250 FI 2016
TM RACING EN 250 FI 2015
TM RACING EN 250 FI 2014
TM RACING EN 250 FI 2013
TM RACING EN 250 FI 2012
TM RACING EN 250 FI 2011
TM RACING ENDURO 250 2T 2003
TM RACING ENDURO 250 2T 2002
TM RACING ENDURO 250 2T 2001
TM RACING ENDURO 250 2T 2000
TM RACING ENDURO 250 2T 1999
TM RACING ENDURO 250 2T 1998
TM RACING ENDURO 250 2T 1997
TM RACING ENDURO 250 2T 1996
TM RACING ENDURO 250 2T 1995
TM RACING MX 250 2019
TM RACING MX 250 2018
TM RACING MX 250 2017
TM RACING MX 250 2016
TM RACING MX 250 2015
TM RACING MX 250 2014
TM RACING MX 250 2013
TM RACING MX 250 2012
TM RACING MX 250 2011
TM RACING MX 250 2010
TM RACING MX 250 2008
TM RACING MX 250 2007
TM RACING MX 250 2006
TM RACING MX 250 2005
TM RACING MX 250 2004
TM RACING MX 250 2003
TM RACING MX 250 2002
TM RACING MX 250 2001
TM RACING MX 250 FI 2016
TM RACING MX 250 FI 2015
TM RACING MX 250 FI 2014
TM RACING MX 250 FI 2013
TM RACING MX 250 FI 2012
TM RACING MX 250 FI 2011
TM RACING SMR 250 2008
TM RACING SMR 250 2007
TM RACING SMR 250 2006
TM RACING SMR 250 2005
TM RACING SMR 250 2004
YAMAHA YZ 250 2018
YAMAHA YZ 250 2017
YAMAHA YZ 250 2016
YAMAHA YZ 250 2015
YAMAHA YZ 250 2014
YAMAHA YZ 250 2013
YAMAHA YZ 250 2012
YAMAHA YZ 250 2011
YAMAHA YZ 250 2010
YAMAHA YZ 250 2009
YAMAHA YZ 250 2008
YAMAHA YZ 250 2007
YAMAHA YZ 250 2006
YAMAHA YZ 250 2005
YAMAHA YZ 250 2004
YAMAHA YZ 250 2003
YAMAHA YZ 250 2002
YAMAHA YZ 250 2001
YAMAHA YZ 250 2000
YAMAHA YZ 250 1999
YAMAHA YZ 250 FX 2016
YAMAHA YZ 250 FX 2015