Name: Honda TRX 400EX/400X Wiseco Bottom End Rebuild + Gaskets
Brand: AZ
SKU: WPC131A-1
Price: 644.0 CAD
Availability: InStock

Honda TRX 400EX/400X Wiseco Bottom End Rebuild + Gaskets

$644.00

Shipping calculated at checkout.

Select Year

1999-2004 Part #WPC131A

2005-2014 Part #WPC131B

Add Cam Chain?

Add Cam Chain

No Cam Chain

🛠️ Complete Wiseco Bottom End Rebuild Kit + Top End Gasket Set

Restore your engine from the crank up with this Wiseco bottom end rebuild kit for the Honda TRX 400EX/400X. This package includes everything you need for a reliable rebuild, using trusted OEM-compatible parts from Wiseco.

📦 Kit Includes:

Wiseco Bottom End Rebuild Kit
- Includes crankshaft, main bearings, and full bottom end gasket/seal kit
Complete Top End Gasket Kit
- Head, base, and exhaust gaskets for a full seal refresh

🔧 Key Features:

Fits all Honda TRX 400EX & 400X models
100% OEM-compatible – works with stock and aftermarket components
All parts are brand new in original packaging
Backed by the original manufacturer’s warranty*

📦 Shipping Time:
Ships within 3–5 business days. Tracking provided at the time of shipment.

💬 Customer Support:
We’re available Monday to Friday, 7 AM to 4 PM PST, and our store chat is live 24/7 to help any time.

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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Thank you for your positive review! We're glad to hear that the TRX400EX Cam Chain Tensioner & Wiseco Heavy Duty Cam Chain Kit was able to fix the ticking noise on your 400ex. We agree, these small maintenance steps can make a big difference in the overall performance and sound of your vehicle. We appreciate your feedback and hope to continue providing quality products for your ATV. Happy riding!

Yfz450

Well my mechanic said it was some good parts in the box. I'll let you know how the rebuild goes. Great I hope

I haven’t received them yet

Trevor, thank you for your 5 star review. We appreciate that. Rest assured I just checked your tracking info and UPS says they will arrive today between 1:30 & 3:00 pm. Your going to love the Lectron Carburetors!

Great quality and fast shipping thanks

Wrong gasket

I received the wrong center crankcase gasket

Hi there, thank you for bringing this to our attention. We apologize for the inconvenience of receiving the wrong gasket. We take pride in our products and want to ensure that our customers receive the correct items. We sell countless TRX400EX engine kits and we always ship the same gasket every time. In situations like this, we encourage our customers to reach out to us so we can rectify the issue. We would have been more than happy to ship out the correct gasket right away if you had sent us a picture of the wrong one. Please don't hesitate to contact us for any further assistance. Thank you for choosing our product.

Honda TRX 400EX/400X Wiseco Bottom End Rebuild + Gaskets

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