Honda CRF250R/RX Athena Stock Bore Cylinder Kit (2018–2019)
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Honda CRF250R / CRF250RX Athena 79mm Stock Bore Cylinder Kit – 4-Stroke (2018–2019)
🛠️ Description
Bring your Honda CRF250R or CRF250RX back to peak performance with this Athena Stock Bore Cylinder Kit. Featuring a factory-spec 79mm cylinder, forged piston, and complete gasket set, this kit is engineered for maximum durability, compression, and race-ready power. Perfect for riders who demand OEM reliability with Athena’s performance edge.
✅ What’s Included
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Athena 79mm Nikasil-Coated Cylinder (Stock Bore – 250cc)
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Athena Forged OEM-Style Domed Piston Kit (piston, rings, wrist pin, circlips)
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Athena Top End Gasket Set (all required seals and hardware)
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High-Performance Hard Anodized Power Valves (not compatible with OEM valves)
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All brand-new components in original packaging
📦 Fitment
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Honda CRF250R (2018–2019)
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Honda CRF250RX (2018–2019)
🛡️ Warranty Info
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Backed by Athena’s manufacturer warranty
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Professional installation recommended
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Warranty does not cover failures caused by improper installation, tuning, or break-in procedures
🔑 Key Features
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Stock bore 79mm (250cc) – 13.9:1 compression ratio
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Aluminum cylinder with nickel-carbide coating for longevity
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Ported to Factory Works specifications for improved airflow and performance
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Forged piston kit for race-level durability and strength
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Complete top end gasket set included
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Direct OEM replacement, no head included
📦 Shipping Information
In-stock items ship next business day. ModQuad parts dispatch Monday through Thursday.
Made-to-order and custom powder coat items show their lead time at the top of this page, right next to the truck icon. These are built fresh for you, so timing varies by brand and current backlog.
Need something by a specific date? Call us at 541-668-7503 before ordering and we will check stock and ETA on that exact part. We can often point you to an in-stock alternative from another distributor.
Questions? Contact us, we respond within 24 hours.
