ATHENA Cast Piston for KTM EXC, SX, XC, XCW 300, HUSQVARNA TE, TX 300, GAS GAS EC, EX, MC 300 and HUSABERG TE 300 2000-2025

ATHENA offers this piston kit for KTM EXC, SX, XC, XCW 300, HUSQVARNA TE, TX 300, GAS GAS EC, EX, MC 300 and HUSABERG TE 300 2000-2025. The piston slides in the cylinder and takes the force of the air-fuel combustion, passing it to the connecting rod and crankshaft.

Why a cast piston?

A cast piston is moulded from a high-silicon aluminium alloy, then machined.

• Low expansion: it runs with a tight clearance, stays quiet when cold and warms up quickly.
• Durability: an excellent choice for a stock engine used for leisure or enduro.
• Price: more affordable than a forged piston.
• Good to know: it copes less well with overheating and extreme revs than a forged one.

Why choose ATHENA?

Athena, the Italian manufacturer founded in 1973, is an original-equipment supplier to manufacturers such as KTM and Ducati: the same standards for your replacement parts.

When should you replace the piston on your KTM EXC 300?

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

• Engine: 2-stroke
• Manufacturer part numbers: S4C07200002A (A), S4C07200002B (B), S4C07200002C (C), S4C07200002D (D)

Available in several sizes: choose the one that matches your cylinder (stamped size or measured bore). Diameters: A = 71.93 mm, B = 71.94 mm, C = 71.95 mm, D = 71.96 mm.

Spare parts and items to plan

• Piston rings : ATHENA · WOSSNER
• Piston pin : WOSSNER CW18 · WOSSNER WP033
• Piston pin clips : WISECO · VERTEX
• Top-end gasket kit : ATHENA M752007800094 · ATHENA M751802450094
• Small end needle bearing : PROX · WOSSNER
• Spark plug : NGK 97225 · NGK 6664
• Coolant : LIQUI MOLY 1 L · TWIN AIR
• 2-stroke oil : LIQUI MOLY 1 L · MOTUL 1 L

Compatibility

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

Fits:
GAS GAS EC 300 2025
GAS GAS EC 300 2024
GAS GAS EC 300 2023
GAS GAS EC 300 2022
GAS GAS EC 300 2021
GAS GAS EX 300 2025
GAS GAS EX 300 2024
GAS GAS EX 300 2023
GAS GAS EX 300 2022
GAS GAS EX 300 2021
GAS GAS MC 300 2025
HUSABERG TE 300 2014
HUSABERG TE 300 2013
HUSABERG TE 300 2012
HUSABERG TE 300 2011
HUSQVARNA TE 300 2025
HUSQVARNA TE 300 2024
HUSQVARNA TE 300 2023
HUSQVARNA TE 300 2022
HUSQVARNA TE 300 2021
HUSQVARNA TE 300 2020
HUSQVARNA TE 300 2019
HUSQVARNA TE 300 2018
HUSQVARNA TE 300 2017
HUSQVARNA TE 300 2016
HUSQVARNA TE 300 2015
HUSQVARNA TE 300 2014
HUSQVARNA TX 300 2024
HUSQVARNA TX 300 2023
HUSQVARNA TX 300 2022
HUSQVARNA TX 300 2021
HUSQVARNA TX 300 2020
KTM EXC 300 2025
KTM EXC 300 2024
KTM EXC 300 2023
KTM EXC 300 2022
KTM EXC 300 2021
KTM EXC 300 2020
KTM EXC 300 2019
KTM EXC 300 2018
KTM EXC 300 2017
KTM EXC 300 2016
KTM EXC 300 2015
KTM EXC 300 2014
KTM EXC 300 2013
KTM EXC 300 2012
KTM EXC 300 2011
KTM EXC 300 2010
KTM EXC 300 2009
KTM EXC 300 2008
KTM EXC 300 2007
KTM EXC 300 2006
KTM EXC 300 2005
KTM EXC 300 2004
KTM EXC 300 2003
KTM EXC 300 2002
KTM EXC 300 2001
KTM EXC 300 2000
KTM SX 300 2025
KTM SX 300 2024
KTM SX 300 2023
KTM XC 300 2024
KTM XC 300 2023
KTM XC 300 2022
KTM XC 300 2021
KTM XC 300 2020
KTM XCW 300 2025
KTM XCW 300 2024
KTM XCW 300 2023
KTM XCW 300 2022
KTM XCW 300 2021
KTM XCW 300 2020
KTM XCW 300 2019