ATHENA Exhaust Gasket for YAMAHA TT 250, TT 350, TTR 125, XT 250 and HONDA CRF 80, CRF 100 1985-2015

On YAMAHA TT 250, TT 350, TTR 125, XT 250 and HONDA CRF 80, CRF 100 from 1985 to 2015, the ATHENA S410485012009 exhaust gasket fits in place of the original part. At the junction between the engine and the exhaust, this gasket has to cope with very hot gases and vibration. Crushed or hardened, it lets gases escape: noise, spitting and loss of power.

Specifications

• Brand: ATHENA
• Manufacturer part number: S410485012009
• EAN code: 8051757086221

When to replace it?

• Black or oily marks at the exhaust outlet.
• Spitting, a leaking noise at idle, backfiring on deceleration.
• Gasket crushed, brittle or burnt on removal.

Every time the header pipe or expansion chamber is removed, and as soon as a leak appears.

Fitting tips

1. Clean the gasket seat on both the engine side and the exhaust side.
2. Offer up the exhaust without forcing it, fit all the fasteners, then tighten progressively.
3. Warm the engine up, let it cool down and check the tightness again.

Why ATHENA?

Founded in 1973 near Vicenza, Athena is an Italian engine gasket specialist that has made its gaskets on its own production lines since day one, as well as a renowned manufacturer of pistons and cylinder kits. The brand supplies original equipment to manufacturers such as KTM, Ducati, Fantic, Piaggio and Triumph, and is a partner of the MXGP motocross world championship.

Spare parts and items to plan

• Top-end gasket kit : ATHENA P400485600252 · ATHENA S410485006025
• Spark plug : NGK 4055 · NGK 2412

Frequently asked questions

Can I reuse the old gasket?
No: it crushes and deforms as it heats up. A new gasket costs little and prevents a leak.

Compatibility

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

Fits:
HONDA CRF 80 2013
HONDA CRF 80 2012
HONDA CRF 80 2011
HONDA CRF 80 2010
HONDA CRF 80 2009
HONDA CRF 80 2008
HONDA CRF 80 2007
HONDA CRF 80 2006
HONDA CRF 80 2005
HONDA CRF 80 2004
HONDA CRF 100 2009
HONDA CRF 100 2008
HONDA CRF 100 2007
HONDA CRF 100 2006
HONDA CRF 100 2005
HONDA CRF 100 2004
YAMAHA TT 250 1990
YAMAHA TT 350 1995
YAMAHA TT 350 1994
YAMAHA TT 350 1993
YAMAHA TT 350 1992
YAMAHA TT 350 1991
YAMAHA TT 350 1990
YAMAHA TT 350 1989
YAMAHA TT 350 1988
YAMAHA TT 350 1987
YAMAHA TT 350 1986
YAMAHA TT 350 1985
YAMAHA TTR 125 2015
YAMAHA TTR 125 2014
YAMAHA TTR 125 2013
YAMAHA TTR 125 2012
YAMAHA TTR 125 2011
YAMAHA TTR 125 2010
YAMAHA TTR 125 2009
YAMAHA TTR 125 2008
YAMAHA TTR 125 2007
YAMAHA TTR 125 2006
YAMAHA TTR 125 2005
YAMAHA XT 250 1990