Upgrade the top-end performance of your Yamaha with the Athena P400485100068 Cylinder Kit. Designed with a 102mm big-bore cylinder and a 12.3:1 compression ratio, this kit is engineered to support improved engine output and dependable performance for motocross and off-road applications. Athena is recognized for precision-engineered engine components manufactured to meet demanding powersports requirements.
This cylinder kit is designed for direct fitment on 2018–2019 Yamaha YZ450F and 2018–2019 Yamaha YZ450FX models. The kit configuration supports a straightforward replacement or performance rebuild when paired with compatible components and proper installation procedures. Verify model-year compatibility and follow the manufacturer’s service specifications before installation.
Featuring a 102mm bore, the Athena kit provides an increased displacement option over the original cylinder configuration while maintaining a practical fit for the specified Yamaha engines. Its 12.3:1 compression ratio is intended for riders seeking responsive power delivery and strong engine performance. Install using appropriate tools, gaskets, fasteners, and torque specifications as required by the application.
The manufacturer part number is P400485100068, and the vendor part number is also P400485100068. Select this Athena cylinder kit for a precision-focused solution for rebuilding or enhancing the top end of compatible Yamaha YZ450F and YZ450FX motorcycles.
Features:
- Brand: Athena
- Manufacturer: Athena
- Manufacturer Part Number: P400485100068
- Vendor Part Number: P400485100068
- Cylinder Bore: 102mm big bore design
- Compression Ratio: 12.3:1
- Application: Engine cylinder kit for performance replacement or rebuild
- Fitment: 2018–2019 Yamaha YZ450F
- Fitment: 2018–2019 Yamaha YZ450FX
Fitment:
2018 Yamaha YZ450F
2018 Yamaha YZ450FX
2019 Yamaha YZ450F
2019 Yamaha YZ450FX