VERTEX Segment Set Ø67.5 mm for KTM EGS 250, EXC 250, MX 250, SX 250 1990-1999

VERTEX offers this piston ring set for KTM EGS 250, EXC 250, MX 250, SX 250 1990-1999. 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.

When should you replace the piston rings on your KTM EGS 250?

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

No manufacturer hour figure for this model. Cross-Mania guideline: compression check every 20 h in hard use and every 40 h for leisure.

Specifications and fitting tips

• Manufacturer part number: 3030139

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 · PROX
• 2-stroke oil : LIQUI MOLY 1 L · LIQUI MOLY 4 L

Compatibility

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

Fits:
KTM EGS 250 1999
KTM EGS 250 1998
KTM EGS 250 1997
KTM EGS 250 1996
KTM EXC 250 1999
KTM EXC 250 1998
KTM EXC 250 1997
KTM EXC 250 1996
KTM MX 250 1992
KTM MX 250 1991
KTM MX 250 1990
KTM SX 250 1994