Athena Big Bore Piston Kit – 97.95mm YFZ450R/X (2004-2013)
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🏁 Athena Forged Big Bore Piston Kit – 97.95mm (Yamaha YFZ450R/X)
Upgrade your Athena big bore setup with this 97.95mm Forged Piston Kit, designed for max compression, high RPM durability, and serious horsepower. Built from 2618 forged aluminum and tested under racing conditions, this piston is ideal for high-performance YFZ450 builds running Athena big bore cylinders.
✅ What’s Included
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Athena 97.95mm forged piston
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Piston rings
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Wrist pin
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Circlips
📦 Fitment
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2004–2011 Yamaha YFZ450 (carbureted)
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2009–2013 Yamaha YFZ450R
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2010–2011 Yamaha YFZ450X
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Designed for use with Athena big bore cylinders only
⚙️ Features
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High-strength 2618 forged aluminum construction
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12.4:1 compression ratio
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Optimized for racing and high-load environments
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Engine dyno and track tested under progressive stress
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Handles thermal and mechanical extremes
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Ideal for 4-stroke ATV performance builds
🛡️ Warranty
Backed by Athena’s limited warranty against manufacturing defects.
📦 Shipping Information
In-Stock Items:
- Most parts ship next business day
- Modquad parts: Monday–Thursday dispatch
Made-to-Order Items:
- Custom swingarms & A-arms: 2–4 weeks
- EVP exhaust systems: 2–4 weeks
Stock Guarantee: Items marked "In Stock" ship immediately. Made-to-order items are built fresh for you.
Questions? Contact us—we respond within 24 hours.
