Set of Piston Rings Ø95 mm VERTEX for KTM EXC 500, EXC 525, EXCF 500, XC 525, HUSQVARNA FE 501, HUSABERG FE 501 and BETA RR 525

VERTEX offers this piston ring set for KTM EXC 500, EXC 520, EXC 525, EXCF 500, XC 525, HUSQVARNA FE 501, HUSABERG FE 501 and BETA RR 525 1995-2023. 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 a top-end rebuild (manufacturer recommendation for the KTM EXC-F, Husqvarna FE 2017-2023):

• Racing: every 70 h.
• Leisure: every 135 h.

Specifications and fitting tips

• Manufacturer part number: 590295000001

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 01.6512 · PROX 01.6521.C
• Top-end gasket kit : CENTAURO · TECNIUM
• 2-stroke oil : MOTUL 10W50 · LIQUI MOLY 10W40 1 L

Compatibility

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

Fits:
BETA RR 525 2009
BETA RR 525 2008
BETA RR 525 2007
BETA RR 525 2006
BETA RR 525 2005
BETA RR 525 2004
HUSABERG FE 501 2014
HUSABERG FE 501 2013
HUSABERG FE 501 2000
HUSABERG FE 501 1999
HUSABERG FE 501 1998
HUSABERG FE 501 1997
HUSABERG FE 501 1996
HUSABERG FE 501 1995
HUSQVARNA FE 501 2023
HUSQVARNA FE 501 2022
HUSQVARNA FE 501 2021
HUSQVARNA FE 501 2020
HUSQVARNA FE 501 2019
HUSQVARNA FE 501 2018
HUSQVARNA FE 501 2017
HUSQVARNA FE 501 2016
HUSQVARNA FE 501 2015
HUSQVARNA FE 501 2014
KTM EXC 500 2016
KTM EXC 500 2015
KTM EXC 500 2014
KTM EXC 500 2013
KTM EXC 500 2012
KTM EXC 520 2002
KTM EXC 520 2001
KTM EXC 520 2000
KTM EXC 520 1999
KTM EXC 525 2007
KTM EXC 525 2006
KTM EXC 525 2005
KTM EXC 525 2004
KTM EXC 525 2003
KTM EXCF 500 2023
KTM EXCF 500 2022
KTM EXCF 500 2021
KTM EXCF 500 2020
KTM EXCF 500 2019
KTM EXCF 500 2018
KTM EXCF 500 2017
KTM SMR 450 2007
KTM SMR 450 2006
KTM SMR 450 2005
KTM SX 450 2006
KTM SX 450 2005
KTM SX 450 2004
KTM SX 450 2003
KTM SX 520 2002
KTM SX 520 2001
KTM SX 520 2000
KTM SX 525 2006
KTM SX 525 2005
KTM SX 525 2004
KTM SX 525 2003
KTM SX 525 SUPERMOTO 2005
KTM SX 525 SUPERMOTO 2004
KTM XC 525 2012
KTM XC 525 2011
KTM XC 525 2010
KTM XC 525 2009
KTM XC 525 2008