ATHENA Crankshaft Bearing and Seal Kit for KTM, HUSQVARNA and GAS GAS 2002-2023

ATHENA offers this engine bearing and seal kit for KTM, HUSQVARNA and GAS GAS 2002-2023. The crankshaft and gearbox shafts spin on bearings in the cases; oil seals keep the oil in around the shafts.

What is this bearing made of?

Races and balls (or rollers) in hardened chrome steel, 100Cr6 type: a very hard steel that withstands the fatigue of millions of engine revolutions.

• Open bearing: unsealed, it is lubricated and cooled by the engine oil; clean oil is its best protection.
• C3 / C4 internal clearance: slightly more clearance than normal for a hot engine’s expansion; always refit the original clearance.
• Limit: it dislikes dust and old oil; running short of oil destroys it within minutes.

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 bearings on your KTM SX 125?

Unusual vibration, a deep knock that follows engine speed or play in the con-rod: the bottom end needs a rebuild.

The manufacturer publishes no hour interval for this model: have the con-rod play checked at every piston change. Cross-Mania guideline: rebuild the bottom end every 2 to 3 top-end rebuilds.

Specifications and fitting tips

• Manufacturer part number: P400270444023

Spare parts and items to plan

• Complete engine gasket kit : TECNIUM · ATHENA
• Gearbox bearings : HOT RODS TBK0018 · HOT RODS TBK0102
• Connecting rod kit : ATHENA P40321047 · ATHENA PB322007
• Gearbox oil : LIQUI MOLY 10W30 1 L · LIQUI MOLY 80W 500 ml

Compatibility

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

Fits:
GAS GAS MC 125 2023
GAS GAS MC 125 2022
GAS GAS MC 125 2021
HUSQVARNA TC 125 2023
HUSQVARNA TC 125 2022
HUSQVARNA TC 125 2021
HUSQVARNA TC 125 2020
HUSQVARNA TC 125 2019
HUSQVARNA TC 125 2018
HUSQVARNA TC 125 2017
HUSQVARNA TC 125 2016
HUSQVARNA TC 125 2015
HUSQVARNA TC 125 2014
HUSQVARNA TE 125 2016
HUSQVARNA TE 125 2015
HUSQVARNA TE 125 2014
HUSQVARNA TE 150 2023
HUSQVARNA TE 150 2022
HUSQVARNA TE 150 2021
HUSQVARNA TE 150 2020
HUSQVARNA TE 150 2019
HUSQVARNA TE 150 2018
HUSQVARNA TE 150 2017
HUSQVARNA TX 125 2019
HUSQVARNA TX 125 2018
HUSQVARNA TX 125 2017
KTM EXC 125 2016
KTM EXC 125 2015
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 EXC 150 2023
KTM EXC 150 2022
KTM EXC 150 2021
KTM EXC 150 2020
KTM SX 125 2023
KTM SX 125 2022
KTM SX 125 2021
KTM SX 125 2020
KTM SX 125 2019
KTM SX 125 2018
KTM SX 125 2017
KTM SX 125 2016
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 150 2022
KTM SX 150 2021
KTM SX 150 2020
KTM SX 150 2019
KTM SX 150 2018
KTM SX 150 2017
KTM SX 150 2016
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 125 2023
KTM XC 125 2022
KTM XC 125 2021
KTM XC 150 2014
KTM XC 150 2013
KTM XC 150 2012
KTM XC 150 2011
KTM XCW 125 2019
KTM XCW 125 2018
KTM XCW 125 2017
KTM XCW 150 2023
KTM XCW 150 2022
KTM XCW 150 2021
KTM XCW 150 2020
KTM XCW 150 2019
KTM XCW 150 2018
KTM XCW 150 2017