Cylinder Works 97mm Big Bore Kit – TRX450R 479cc–500cc (2004-2005)
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Cylinder Works Big Bore 97mm Cylinder Kit – Honda TRX450R (479cc–500cc)
🛠️ Unleash big power gains from your Honda TRX450R with this 97mm Big Bore Cylinder Kit by Cylinder Works. A drop-in replacement for stock cylinders, this kit bumps displacement to 479cc—or a full 500cc when paired with the Hot Rods stroker crank (#0921-0048). Designed to match OEM specs with race-ready upgrades.
✅ What’s Included
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Big Bore Cylinder (97.00mm, Nickel Silicon Carbide-plated)
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Vertex Piston Kit (piston, rings, wrist pin, and circlips)
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Complete Top-End Gasket Kit
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No case machining required
📦 Fitment
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Honda TRX450R (2004–2005)
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Honda TRX450R Sportrax (2004)
🛡️ Warranty Info
Backed by Cylinder Works limited warranty for material or manufacturing defects. Warranty excludes failures due to improper installation, misuse, or competition use.
🔑 Key Features
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Increases displacement to 479cc or 500cc with stroker crank
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OEM-look aluminum cylinder with gray finish
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Nickel Silicon Carbide coating for extended durability
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10.5:1 compression ratio for reliable power boost
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Made in the USA
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Bolt-on upgrade with no machining required
📦 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.
