Honda TRX400EX/X Vertex 440cc Forged Big Bore Piston Kit – 86.97mm (2000-2014)
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Honda TRX400EX/X 440cc Forged Big Bore Piston Kit – Vertex (86.97mm, +2.00mm)
Description
🛠️ Boost your Honda TRX400EX or TRX400X with this high-performance Vertex forged big bore piston kit. Engineered from 2618 forged aluminum and coated with Molybdenum Disulphite for reduced friction, it increases engine displacement to 440cc for more torque and peak horsepower. Perfect for riders seeking a reliable and long-lasting power upgrade.
What’s Included
✅ Forged 2618 Aluminum Big Bore Piston (+2.00mm / 86.97mm)
✅ Piston Ring Set
✅ Wrist Pin
✅ Circlips
Fitment
📦 2009, 2012–2014 Honda TRX400X
📦 2000–2008 Honda TRX400EX Sportrax
📦 1999 Honda TRX400EX FourTrax
Warranty Info
🛡️ Manufacturer’s warranty against defects in materials or workmanship.
Key Features
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T-5 heat-treated and tempered for strength
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Forged 2618 aluminum for superior durability
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Molybdenum Disulphite skirt coating for reduced friction and faster break-in
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+2.00mm oversize increases displacement to 440cc
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10.0:1 compression ratio for balanced performance and reliability
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Increases torque and peak horsepower
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Direct OE stock compression big bore design
📦 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.
