PISTON KIT B 98MM HONDA CRF 450 17-22, ATHENA S4F09800011B 470CC BIG BORE, KIT B
4.1 Trustpilot 99.9% positive on eBay
Free UK delivery 2–4 business days
Spread the cost with 
18+, T&Cs apply
ATHENA Forged Racing Piston Ø 97.97 mm for Athena Big Bore Cylinder - S4F09800011B. This piston kit includes the piston, pin, circlips, and piston rings. Produced with cutting-edge CNC machining tools, Athena pistons are made of a special high-performance aluminum alloy with high silicon content. Some pistons' skirts are treated with a molybdenum disulfide coating to reduce friction. Piston rings are produced in Japan with wear-resistant coatings. Compression Ratio 12.9:1.
- SKU
- 56-K188.098.PIB
- Brand
- Athena
- Availability
- In Stock (2)
Fitments (10)
| Make | Model | Year |
|---|---|---|
| HONDA | CRF 450R | 2017 |
| HONDA | CRF 450R | 2018 |
| HONDA | CRF 450R | 2019 |
| HONDA | CRF 450R | 2020 |
| HONDA | CRF 450R | 2021 |
| HONDA | CRF 450RX | 2017 |
| HONDA | CRF 450RX | 2018 |
| HONDA | CRF 450RX | 2019 |
| HONDA | CRF 450RX | 2020 |
| HONDA | CRF 450RX | 2021 |
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- General Size
- 98mm
- Variant Id
- 295829
FULL DESCRIPTION
Athena Forged Racing Piston Kit B - 98mm
This Athena Forged Racing Piston Kit B is designed for performance upgrades and is manufactured using advanced reverse extrusion techniques. Crafted from a special high-performance aluminum alloy with a high silicon content, these pistons offer superior reliability, enhanced resistance, and excellent performance compared to original equipment.
Engineered with cutting-edge CNC machining, this piston ensures dimensional tolerances of less than 0.01 mm. The smooth profile promotes regular flow and perfect flame propagation. Some piston skirts feature a molybdenum disulfide coating applied by screen printing to further reduce friction, boosting performance and durability.
Athena's commitment to quality is evident, with all pistons engineered in Italy and rigorously tested on dynamometer benches and tracks under extreme conditions. This piston kit is specifically designed for Athena Big Bore cylinder kits and includes high-performance piston rings manufactured in Japan with wear-resistant coatings. These rings minimize friction with the cylinder, leading to higher performance and increased durability.
Key Features:
- Forged racing piston with a 97.97 mm diameter.
- Constructed from a special high-performance aluminum alloy with high silicon content.
- Manufactured using advanced CNC machining for precise tolerances.
- Features a smooth profile for optimal flow and flame propagation.
- Some models include a molybdenum disulfide coating on the skirt for reduced friction.
- Includes piston rings manufactured in Japan with wear-resistant coatings (PVD or chromium nitride).
- Compression Ratio: 12.9:1
- Kit includes: Piston, piston pin, circlips, and piston rings. All components are replaceable.
All Athena products designed for increased displacement and power beyond road regulations are intended exclusively for competitive use. Athena is not responsible for any use of the product contrary to national regulations.
QUESTIONS? JUST ASK
Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00.
Check the fitment table on this page against your make, model and year. Not sure? Call or email us and we will check it for you before you order.
UK delivery is £4.99, or free on orders over £60. Orders ship within 3 working days, then delivery takes 2–4 business days. Delivery details
Yes. You have 14 days from delivery to return it, unused and in its original packaging. Contact us first and we will send you the return instructions. Returns policy
By card, PayPal, Apple Pay or Google Pay, or spread the cost with Klarna. Payment is taken securely by Stripe, and the options for your order are shown at checkout.
More answers in our FAQ.
Trade pricing available
Buying parts for your business? Apply for a 2BrosParts trade account.