Cylinder Athena 290 Big Bore Honda CRF 250 R 18-21

Cylinder Athena 290 Big Bore for Honda CRF 250 R 2018-2021 and CRF RX 250 2019-2021.

If you are looking for more power and a more aggressive response from your Honda CRF 250 R or RX, the Cylinder Athena 290cc Big Bore is the perfect upgrade. Ideal for riders who want to get the very most out of their bike’s performance, delivering a fuller and more progressive engine throughout every phase of riding.

The kit includes an oversized Cylinder made of aluminum alloy with a steel Shirt, a forged Racing piston with anti-friction design, and all the necessary gaskets for installation. This combination guarantees greater durability, smoother operation, and maximum power even under intensive use.

Key points

• Significant performance increase without compromising reliability
• Durability and smoothness guaranteed by a special nickel and silicone treatment
• Forged Racing piston with reinforced open design and anti-friction coating
• Cylinder made of aluminum alloy with a steel Shirt

Technical specifications

• Displacement: 288.83 cc
• Piston diameter: 85.00 mm
• Diameter increase: +6 mm
• Line: Enduro
• Net weight: 1.68 kg
• Compression ratio: 13.7:1

Compatible models

HONDA

• CRF 250 R 2018-2021
• CRF RX 250 2019-2021