ATHENA Big Bore Cylinder Group 304CC 85mm for Yamaha YZ 250 F 2024-2025
for YAMAHA YZ F 250
Check the compatibility with your motorcycle
FIND YOUR BIKE - compatibility table
-15%
Special Price €764.20 Regular Price €899.01
The ATHENA Big Bore 304CC 85mm Thermal Group represents a strategic choice for those looking to enhance the performance of their motorcycle.
With a bore of 85 mm and a displacement of 304.15 cc, this component is designed to ensure a significant increase in power and torque, transforming every ride into an enthusiastic experience.
The increase of 8 mm over standard sizes allows for optimized combustion and improved engine efficiency, while the compression ratio of 13.3:1 offers a perfect balance between high performance and reliability.
With the ATHENA Thermal Group, every motorcyclist can push beyond their limits, exploring new roads with an extra gear.
- Bore: 85 mm
- Displacement: 304.15 cc
- Increase over standard: 8 mm
- Compression ratio: 13.3:1
WARNING: The cylinder head and base gaskets included in the kit are specifically developed for ATHENA thermal groups. Whenever the thermal group is disassembled, replace the gaskets with the specific ATHENA replacement series: DO NOT use original replacement gaskets.
| Bore | 85 |
|---|---|
| Displacement | 304,15 |
| Compression ratio | 13.3:1 |
