Honda TRX 400EX/400X 85mm Full Engine Rebuild Kit
🛠️ Complete 85mm Engine Rebuild Kit for Honda TRX 400EX/400X
Built for reliability and performance, this all-in-one engine rebuild kit has everything you need to freshen up or fully rebuild your 400EX/400X motor. No machining needed — just bolt it on and go ride.
📦 Kit Includes:
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Brand New 85mm Cylinder – OEM stock bore (studs not included)
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Custom 85mm Piston Kit – Choose Wiseco, CP, or JE brand at checkout
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Hotrods Heavy-Duty Crankshaft with Rod – Built for high-load durability
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Complete Set of Motor Roller Bearings – Smooth operation & long life
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Full Seal Kit – Includes main seals, valve seals & more
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Complete Gasket Set – Top to bottom seal refresh
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Cam Chain – Keeps engine timing precise
🔧 Key Features:
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Fits all Honda TRX 400EX and 400X models (1999–2015)
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Works with stock or modified heads
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Piston is compatible with pump or race fuel
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No machining required – true bolt-on installation
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All parts are new in original packaging
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Covered by original manufacturer warranties
📦 Shipping Time:
Ships within 5–7 business days. Tracking info provided upon fulfillment.
💬 Customer Support:
We’re available Monday–Friday, 7 AM to 4 PM PST, and our store chat is open 24/7 for quick help anytime.
We ship next day most of the time. Modquad parts are shipped Monday-Thursday. Engine Kits are 3-5 business days.
We don't do backorder! If your items has already sold you will be notified immediately and you money refunded on the spot.
Sold items are removed daily.
If you see it on this website, it is 100% in stock unless it just sold before you clicked buy.
If you call we answer, if you text we respond, if you have a question we respond. Sometimes we sleep so it could be next morning but we will respond.
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