Cylinder Works 99mm Big Bore Kit – Honda TRX450R (06–14)
Cylinder Works Big Bore Cylinder Kit 99mm 12.0:1 – Honda TRX450R/ER (06–14)
Boost your TRX450R’s power with this Cylinder Works 99mm Big Bore Kit. It’s a direct bolt-on upgrade featuring a nickel-silicon-carbide plated cylinder and high-compression piston for stronger, cooler performance and longer life.
✅ What’s Included
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Cylinder Works 99mm Big Bore Cylinder (nickel-silicon-carbide plated)
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Vertex 12.0:1 forged piston kit
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Hi-temp piston rings
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Chrome wristpin & circlips
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Complete top-end gasket set (excludes valve stem seals)
📦 Fitment
Fits all 2006–2014 Honda TRX450R and TRX450ER Electric Start models.
No machining required — direct bolt-on installation.
🛡️ Warranty Info
1-Year manufacturer warranty on materials and craftsmanship.
Professional installation recommended.
💲 Price: $728.95
🔢 SKU: 422-11005K
📦 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
- Sneakers: 1–2 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.
