Bottom End Rebuild Kit | Honda TRX400EX (1999–2004)

$695.00

Shipping calculated at checkout.

🧰 Bottom End Rebuild Kit | Honda TRX400EX (1999–2004)

Upgrade your Honda TRX400EX with this heavy-duty bottom end rebuild kit designed for reliability and performance. Featuring a Talon HD crank assembly, SKF bearings, and TITANIUM head studs with a lifetime warranty, this is the ultimate bottom end solution for your 400EX. All components are engineered for direct fit—no modifications required.

✅ What’s Included

Talon HD replacement crankshaft with rod
SKF main crank bearings
Crank balancer bearings
Full transmission bearing set
Clutch roller & needle bearings
Heavy-Duty clutch kit
Complete engine gasket kit
MLS (Multi-Layer Steel) head gasket
Full engine seal kit
Valve stem seals
Talon TITANIUM cylinder head stud kit (Lifetime Warranty*)

📦 Fitment

1999 Honda TRX400EX Sportrax
2000 Honda TRX400EX Sportrax
2001 Honda TRX400EX Sportrax
2002 Honda TRX400EX Sportrax
2003 Honda TRX400EX Sportrax
2004 Honda TRX400EX Sportrax
Fits all 1999–2004 Honda 400EX models without modification

🛡️ Warranty Info

1 Year Warranty on parts
Titanium Stud Kit includes Lifetime Warranty against failure (not installation)
Parts must be installed by a qualified mechanic for warranty eligibility
Warranty does not cover misuse, poor installation, or lack of maintenance
Warranty claims require returned product for inspection—no photos or phone-based claims accepted

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!

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.