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ATHENA Cylinder Head for ATHENA cylinder kit for YAMAHA DT 125 1991-2004
€58.90
Tax Included
ATHENA cylinder head for YAMAHA DT 125 from 1991 to 2004.
The ATHENA S410485308004 cylinder head is designed for YAMAHA DT 125 from 1991 to 2004. The cylinder head closes off the top of the cylinder and forms the combustion chamber. On a two-piece VHM head, the chamber is a machined insert that can be swapped in a few minutes to adapt the engine's compression.
Specifications
- Brand: ATHENA
- Manufacturer part number: S410485308004
- EAN code: 8051757199655
- For ATHENA cylinder kit ref. P400485100019 (Ø56 mm)
- Weight: 410 g
- Engine: 2-stroke
Who is it for?
- Original head damaged by pinking (detonation), cracked or warped.
- You want to match the compression to the fuel, the terrain or a tuned engine.
- You're after a smoother or snappier engine without changing the cylinder.
Good to know
The insert is chosen to suit your engine and your fuel: a smaller chamber volume raises compression, which may call for a higher-octane fuel. Always check the squish when fitting.
Fitting tips
- Clean the cylinder mating face without scratching it.
- Fit new O-rings and grease them lightly so they stay in place.
- Check the squish (gap between piston and head) with solder wire before riding.
- Tighten the head in a criss-cross pattern, in several stages, to the recommended torque.
- Fit a new spark plug and refill the coolant.
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
- ATHENA cylinder kit : ATHENA
- Piston : ATHENA
- Piston rings : ATHENA
- Top end gasket kit : ATHENA
- Exhaust power valve parts : ATHENA
- Spark plug : NGK 3981 · NGK 2411
- Coolant : LIQUI MOLY 1 L · TWIN AIR
Frequently asked questions
Can I change the compression later?
Yes: just swap the VHM insert, without removing the cylinder.
Compatibility
Check the exact model and year of your bike in the list below before ordering.
Fits:
YAMAHA DT 125 2004
YAMAHA DT 125 2003
YAMAHA DT 125 2002
YAMAHA DT 125 2001
YAMAHA DT 125 2000
YAMAHA DT 125 1999
YAMAHA DT 125 1998
YAMAHA DT 125 1997
YAMAHA DT 125 1996
YAMAHA DT 125 1995
YAMAHA DT 125 1994
YAMAHA DT 125 1993
YAMAHA DT 125 1992
YAMAHA DT 125 1991
S410485308004
1 Item
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ATHENA cylinder head for YAMAHA DT 125 from 1991 to 2004.
ATHENA Cylinder Head for ATHENA cylinder kit for YAMAHA DT 125 1991-2004
€58.90
Tax Included