ATHENA Cylinder Base Gasket for KTM EXCF, FREERIDE, SXF, XCF, XCFW 250, 350 and HUSQVARNA FC, FE 250, 350 2011-2018

ATHENA offers this cylinder base gasket for KTM EXCF, FREERIDE, SXF, XCF, XCFW 250, 350 and HUSQVARNA FC, FE 250, 350 2011-2018. The base gasket sits under the cylinder, on the crankcase. Crushed when tightened, it cannot be reused: replace it every time the cylinder comes off.

Why does the thickness matter?

The benefits:

• The OE thickness keeps the cylinder height intended by the manufacturer.
• Another thickness lets you correct piston-to-head clearance after machining or adjust the port timing of a 2-stroke.
• A new gasket keeps the bottom end sealed against oil and gases.

Why choose ATHENA?

Athena, founded in 1973 by Giovanni Mancassola near Vicenza and based in Alonte (Italy), designs gaskets, pistons and cylinder kits; it supplies original equipment to manufacturers such as KTM, Ducati, Fantic and Triumph.

When should you replace the base gasket on your KTM FREERIDE 350?

Every time the cylinder comes off: piston change, top-end rebuild or cylinder inspection. Oil or mixture seeping at the base of the cylinder also points to a tired gasket.

No manufacturer figure in hours for this model. Cross-Mania guideline: compression check every 50 h of hard use and every 100 h of leisure riding.

Specifications and fitting tips

• Manufacturer part numbers: S410270006082 (OE), S410270006087 (0.10 mm), S410270006088 (0.20 mm), S410270006089 (0.30 mm), S410270006090 (0.50 mm), S410270006091 (0.60 mm)

Choose the thickness from the list. "OE" is the factory thickness; another thickness is used to set the cylinder height after a rebuild (piston-to-head clearance, port timing on a 2-stroke).

Cross-Mania tip: Choose the OE thickness if the cylinder and head have not been machined; if in doubt, measure the squish with solder wire before final assembly.

Spare parts and items to plan

• Top-end gasket kit : VERTEX · CENTAURO
• Piston : PROX 01.6333.A · PROX 01.6333.A
• Piston rings : PROX 02.6351 · PROX 02.6333
• Coolant : LIQUI MOLY 1 L · TWIN AIR

Compatibility

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

Fits:
HUSQVARNA FC 250 2015
HUSQVARNA FC 250 2014
HUSQVARNA FC 350 2015
HUSQVARNA FC 350 2014
HUSQVARNA FE 250 2016
HUSQVARNA FE 350 2016
HUSQVARNA FE 350 2015
HUSQVARNA FE 350 2014
KTM EXCF 250 2016
KTM EXCF 250 2015
KTM EXCF 250 2014
KTM EXCF 350 2016
KTM EXCF 350 2015
KTM EXCF 350 2014
KTM EXCF 350 2013
KTM FREERIDE 350 2017
KTM FREERIDE 350 2016
KTM FREERIDE 350 2015
KTM FREERIDE 350 2014
KTM FREERIDE 350 2013
KTM SXF 250 2015
KTM SXF 250 2014
KTM SXF 250 2013
KTM SXF 350 2015
KTM SXF 350 2014
KTM SXF 350 2013
KTM SXF 350 2012
KTM SXF 350 2011
KTM XCF 250 2015
KTM XCF 250 2014
KTM XCF 250 2013
KTM XCF 350 2015
KTM XCF 350 2014
KTM XCF 350 2013
KTM XCF 350 2012
KTM XCFW 250 2018
KTM XCFW 250 2017
KTM XCFW 250 2016
KTM XCFW 250 2015
KTM XCFW 250 2014
KTM XCFW 350 2015
KTM XCFW 350 2014
KTM XCFW 350 2013
KTM XCFW 350 2012