CYLINDER FULL KIT 98mm 06-15 YAMAHA YZ WR 450 ATHENA P400485100021 480CC BIG BORE (PISTON INCLUDED)
Athena Big Bore Cylinder Kit Ø 98 mm, 480 cc, P400485100021. Engineered in Italy by Athena’s R&D Department, this cylinder is coated with motor-nicksil, a nickel-silicon coating for smoothness and wear resistance. Athena’s cylinder kits are known for performance, durability, and reliability. The Big Bore Cylinder Kits guarantee an increase in performance along the power curve while maintaining original component reliability. The kit includes an aluminum cylinder with increased bore, a complete piston with pin and rings, and all necessary gaskets. Components are developed to withstand high temperatures, pressures, and stresses, validated by Athena technicians through bench and road tests. This kit can be installed without engine crankcase modifications. Bore Diameter: 98.00 mm. Compression Ratio: 12.4:1. Displacement: 480 cc. Net Weight: 2.25 Kg. Partner Cross Reference codes: K8562D300-1ZA, WT400485100021. Optional Parts: S4F09800005A Piston Kit ø 97,94, S4F09800005B Piston Kit ø 97,95, P400485160013 Gaskets Kit, S41316027 Rings, S41317004 Piston Pin. Part No. 56-K108.98.KIT.
- SKU
- 56-K108.98.KIT
- Brand
- Athena
- Availability
- In Stock (3)
FULL DESCRIPTION
Athena Big Bore Cylinder Kit - 480cc
Upgrade your motorcycle's performance with the Athena Big Bore Cylinder Kit. This kit is meticulously engineered in Italy by Athena's dedicated R&D department, utilizing advanced design and testing tools. The cylinder features a Motor-Nicksil coating, a proprietary nickel-silicon blend developed by Athena for superior smoothness and exceptional wear resistance.
Athena's big bore kits are globally recognized for enhancing performance, durability, and reliability. This kit provides a noticeable increase in power across the engine's RPM range while maintaining the reliability expected from original components.
The complete kit includes:
- A high-quality aluminum cylinder with an increased bore diameter.
- A complete piston assembly, including piston pin and rings.
- All necessary gaskets for installation.
Every component in this kit is designed to withstand extreme temperatures, pressures, and stresses, having undergone rigorous testing by Athena technicians on both dynamometers and public roads. This cylinder kit can be installed without requiring any modifications to the engine crankcase.
Technical Specifications:
- Bore Diameter: 98.00 mm
- Compression Ratio: 12.4:1
- Displacement: 480 cc
- Net Weight: 2.25 kg


