Product description
The Athena Big Bore Race Cylinder Kit For Yamaha YZ125 1997-2004 is part of the latest collection from Athena.
Features:
- Aluminum cylinder with nickel carbide coating and aluminum cylinder head with removeable bronze dome
- Specially designed, high performance, hard anodized power valves (cannot use OEM)
- Kit also includes Athena top end gasket set with required seals and hardware
- Piston kit includes cast lite flat top piston, rings, clips and pin May require case boring.
Specifications:
- Base Color: Silver
- Bore Size: 58.00 mm
- Cylinder Bore Coating: Nickel-Carbide
- Displacement: 144 cc
- Engine Type: 2-Stroke
- Material: Aluminum
- Product Name: Cylinder Kit
- Style: Big Bore
- Units: Kit
To fit:
- YAMAHA YZ 125 1997 All Models
- YAMAHA YZ 125 1998 All Models
- YAMAHA YZ 125 1999 All Models
- YAMAHA YZ 125 2000 All Models
- YAMAHA YZ 125 2001 All Models
- YAMAHA YZ 125 2002 All Models
- YAMAHA YZ 125 2003 All Models
- YAMAHA YZ 125 2004 All Models
Manufacturer part number: P400485100029
View all Athena. View all Parts and spares.
Contents
Your package will include the following:
- 1 X Athena Big Bore Race Cylinder Kit For Yamaha YZ125 1997-2004
To fit:
- YAMAHA YZ 125 1997 All Models
- YAMAHA YZ 125 1998 All Models
- YAMAHA YZ 125 1999 All Models
- YAMAHA YZ 125 2000 All Models
- YAMAHA YZ 125 2001 All Models
- YAMAHA YZ 125 2002 All Models
- YAMAHA YZ 125 2003 All Models
- YAMAHA YZ 125 2004 All Models

Athena offers high performance motorcycle parts designed for off-road vehicles. Known for durability and precision, their product range includes cylinder kits, gaskets, and pistons, tailored for motocross, enduro motor bikes and ATVs. Trusted by riders across the world, Athena's hard parts improve engine performance and reliability, making them a favourite in competitive and recreational off-road motorcycle riding.
Product description
The Athena Big Bore Race Cylinder Kit For Yamaha YZ125 1997-2004 is part of the latest collection from Athena.
Features:
- Aluminum cylinder with nickel carbide coating and aluminum cylinder head with removeable bronze dome
- Specially designed, high performance, hard anodized power valves (cannot use OEM)
- Kit also includes Athena top end gasket set with required seals and hardware
- Piston kit includes cast lite flat top piston, rings, clips and pin May require case boring.
Specifications:
- Base Color: Silver
- Bore Size: 58.00 mm
- Cylinder Bore Coating: Nickel-Carbide
- Displacement: 144 cc
- Engine Type: 2-Stroke
- Material: Aluminum
- Product Name: Cylinder Kit
- Style: Big Bore
- Units: Kit
To fit:
- YAMAHA YZ 125 1997 All Models
- YAMAHA YZ 125 1998 All Models
- YAMAHA YZ 125 1999 All Models
- YAMAHA YZ 125 2000 All Models
- YAMAHA YZ 125 2001 All Models
- YAMAHA YZ 125 2002 All Models
- YAMAHA YZ 125 2003 All Models
- YAMAHA YZ 125 2004 All Models
Manufacturer part number: P400485100029
View all Athena. View all Parts and spares.
Contents
Your package will include the following:
- 1 X Athena Big Bore Race Cylinder Kit For Yamaha YZ125 1997-2004
To fit:
- YAMAHA YZ 125 1997 All Models
- YAMAHA YZ 125 1998 All Models
- YAMAHA YZ 125 1999 All Models
- YAMAHA YZ 125 2000 All Models
- YAMAHA YZ 125 2001 All Models
- YAMAHA YZ 125 2002 All Models
- YAMAHA YZ 125 2003 All Models
- YAMAHA YZ 125 2004 All Models

Athena offers high performance motorcycle parts designed for off-road vehicles. Known for durability and precision, their product range includes cylinder kits, gaskets, and pistons, tailored for motocross, enduro motor bikes and ATVs. Trusted by riders across the world, Athena's hard parts improve engine performance and reliability, making them a favourite in competitive and recreational off-road motorcycle riding.































