ATHENA Cylinder Base Gasket for YAMAHA PW 50 1982-2025

ATHENA offers this cylinder base gasket for YAMAHA PW 50 1982-2025. 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 YAMAHA PW 50?

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 15 h of hard use and every 30 h of leisure riding.

Specifications and fitting tips

• Thickness : OE
• Manufacturer part number: S410485006041

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 : ATHENA S410485001041 · ATHENA P400485600004
• Piston : PROX · WOSSNER
• Piston rings : TECNIUM PSR-PASSOL-025 · TECNIUM PSR-PASSOL
• Coolant : LIQUI MOLY 1 L · TWIN AIR

Compatibility

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

Fits:
YAMAHA PW 50 2025
YAMAHA PW 50 2024
YAMAHA PW 50 2023
YAMAHA PW 50 2022
YAMAHA PW 50 2021
YAMAHA PW 50 2020
YAMAHA PW 50 2019
YAMAHA PW 50 2018
YAMAHA PW 50 2017
YAMAHA PW 50 2016
YAMAHA PW 50 2015
YAMAHA PW 50 2014
YAMAHA PW 50 2013
YAMAHA PW 50 2012
YAMAHA PW 50 2011
YAMAHA PW 50 2010
YAMAHA PW 50 2009
YAMAHA PW 50 2008
YAMAHA PW 50 2007
YAMAHA PW 50 2006
YAMAHA PW 50 2005
YAMAHA PW 50 2004
YAMAHA PW 50 2003
YAMAHA PW 50 2002
YAMAHA PW 50 2001
YAMAHA PW 50 2000
YAMAHA PW 50 1999
YAMAHA PW 50 1998
YAMAHA PW 50 1997
YAMAHA PW 50 1996
YAMAHA PW 50 1995
YAMAHA PW 50 1994
YAMAHA PW 50 1993
YAMAHA PW 50 1992
YAMAHA PW 50 1991
YAMAHA PW 50 1990
YAMAHA PW 50 1989
YAMAHA PW 50 1988
YAMAHA PW 50 1987
YAMAHA PW 50 1986
YAMAHA PW 50 1985
YAMAHA PW 50 1984
YAMAHA PW 50 1983
YAMAHA PW 50 1982