ATHENA Cylinder Base Gasket for KTM EGS, EXC, SX, XC 125, 150, HUSQVARNA TC, TE 125 and HUSABERG TE 125 1998-2016

ATHENA offers this cylinder base gasket for KTM EGS, EXC, SX, XC 125, 150, HUSQVARNA TC, TE 125 and HUSABERG TE 125 1998-2016. 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 SX 125?

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 20 h of hard use and every 40 h of leisure riding.

Specifications and fitting tips

• Manufacturer part numbers: S410270006052 (0.05 mm), S410270006053 (0.20 mm), S410270006054 (0.30 mm), S410270006055 (0.40 mm), S410270006056 (0.50 mm), S410270006057 (0.80 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 : CENTAURO · ATHENA
• Piston : VERTEX 24243A · VERTEX 24419A
• Piston rings : WISECO · PROX
• Coolant : LIQUI MOLY 1 L · TWIN AIR

Compatibility

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

Fits:
HUSABERG TE 125 2014
HUSABERG TE 125 2013
HUSABERG TE 125 2012
HUSQVARNA TC 125 2015
HUSQVARNA TC 125 2014
HUSQVARNA TE 125 2016
HUSQVARNA TE 125 2015
HUSQVARNA TE 125 2014
KTM EGS 125 2012
KTM EGS 125 2011
KTM EGS 125 2010
KTM EGS 125 2009
KTM EGS 125 2008
KTM EGS 125 2007
KTM EGS 125 2006
KTM EGS 125 2005
KTM EGS 125 2004
KTM EGS 125 2003
KTM EGS 125 2002
KTM EGS 125 2001
KTM EGS 125 2000
KTM EGS 125 1999
KTM EGS 125 1998
KTM EXC 125 2014
KTM EXC 125 2013
KTM EXC 125 2012
KTM EXC 125 2011
KTM EXC 125 2010
KTM EXC 125 2009
KTM EXC 125 2008
KTM EXC 125 2007
KTM EXC 125 2006
KTM SX 125 2015
KTM SX 125 2014
KTM SX 125 2013
KTM SX 125 2012
KTM SX 125 2011
KTM SX 125 2010
KTM SX 125 2009
KTM SX 125 2008
KTM SX 125 2007
KTM SX 125 2006
KTM SX 125 2005
KTM SX 125 2004
KTM SX 125 2003
KTM SX 125 2002
KTM SX 125 2001
KTM SX 125 2000
KTM SX 125 1999
KTM SX 125 1998
KTM SX 150 2015
KTM SX 150 2014
KTM SX 150 2013
KTM SX 150 2012
KTM SX 150 2011
KTM SX 150 2010
KTM SX 150 2009
KTM XC 150 2014
KTM XC 150 2013
KTM XC 150 2012
KTM XC 150 2011
KTM XC 150 2010
KTM XC 150 2009