Name: Honda TRX 400EX/400X 85mm Top End Rebuild Kit
Brand: AZ
Price: 613.0 CAD
Availability: InStock

Honda TRX 400EX/400X 85mm Top End Rebuild Kit

$613.00

Shipping calculated at checkout.

Select Piston Kit

CP Carrillo 11:1 Compression (Race Gas)Part #M2003

CP Carrillo 10:1 Compression (Pump Gas) Part #2002

Add Timing Chain

Add Timing Chain YES ($25.00)

Add Timing Chain NO

Add Heavy Duty Stud Kit

Add Stud Kit YES ($85.00)

Add Stud Kit NO

More payment options

🛠️ 85mm Stock Bore Top End Rebuild Kit for Honda TRX 400EX/400X

Refresh your engine with this complete 85mm stock bore top end rebuild kit. Designed for riders who want OEM size reliability with brand-new performance — all with easy bolt-on installation.

📦 Kit Includes:

Brand New 85mm Cylinder – Stock bore, no core required
85mm Custom Piston Kit – Choose compression ratio at checkout (compatible with pump or race fuel)
Cometic Top End Gasket Set – High-performance sealing for long-lasting reliability

🔧 Key Features:

Fits all Honda TRX 400EX & 400X models from 1999–2014
Compatible with stock or modified heads and cranks
No machining required – Direct bolt-on upgrade
OEM-size rebuild with brand new components
Covered by the original manufacturer's warranty

📦 Shipping Time:
This top end kit typically ships within 5–7 business days. Tracking details provided upon shipment.

💬 Customer Support:
Available Monday–Friday, 7 AM to 4 PM PST, and our store chat runs 24/7 for 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.

Thank you for shopping with us! We appreciate you!

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