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50 Caliber Racing  |  SKU: 4449A6

Honda XR/TRX 400 Top End Cylinder Kit

SKU: 4449A6
0 reviews
Regular price $8999
Shipping calculated at checkout.


Estimated delivery Calculating delivery date… Ships in 3–5 business days. Delivery dates are estimates. For the most accurate delivery information, call R1 at 801-899-2520.

Description

Restore Your Honda XR/TRX 400's Power & Performance

Revitalize your Honda XR400 or TRX400 with the 50 Caliber Racing Top End Cylinder Kit. Engineered to exacting OEM standards, this comprehensive kit provides all the essential components for a complete top-end rebuild. Enjoy the satisfaction of a DIY installation and save money while ensuring your ride operates at peak performance for years to come.

Complete Kit
Includes all necessary gaskets & parts
OEM Spec
Manufactured to factory standards
Bolt-On Installation
Direct fit, no modifications needed
Extended Lifespan
Rebuild for lasting performance

What’s in the Box (Based on selected options)

Cylinder
Piston
Piston Ring Kit
Wrist Pin
Circlips (2)
Base Gasket
Head Gasket
Case Gasket
Spark Plug

Why Riders Upgrade

⚙️
Precision Fitment
Manufactured to exact OEM specifications for a perfect fit and reliable performance.
🔧
DIY Friendly
All necessary components are included for a straightforward top-end rebuild, empowering you to do the work yourself.
💰
Cost-Effective Solution
Rebuild your existing engine instead of replacing it to save significant money while restoring lost performance.
🚀
Restored Performance
Bring your engine back to life with renewed power and responsiveness for a better riding experience.
In Stock & Ready To Ship
Although rare, some delays may occur. We’ll keep you updated every step of the way.

Cylinder Kit vs. Stock or Generic Options

STOCK CYLINDER KITS
May require additional parts not included
Potential compatibility issues with varied models
Quality can be inconsistent, leading to premature wear
Lacks specific tuning for optimal performance
No guarantee of bolt-on ease
⚡ 50 CALIBER RACING KIT
Complete package with all gaskets included
Engineered to OEM specs for precise fitment
High-quality components for extended engine life
Designed for direct bolt-on installation
Restores lost power and performance

Common Questions

What Honda models does this kit fit?
This kit is designed to fit the Honda TRX400EX, TRX400X, and XR400R models from 1996 to 2015.

What components are included in the kit?
The kit includes a cylinder, piston, piston ring kit, circlips, wrist pin, base gasket, head gasket, case gasket, and a spark plug.

Does this kit require any modifications to install?
No, this kit is designed for a direct bolt-on installation and does not require any modifications.

What is the advantage of rebuilding the top end with this kit?
Rebuilding the top end with this kit restores lost power and performance, extends the life of your engine, and can be a significant cost saving compared to engine replacement.

🛠️
Expert Support
🏆
Quality Guaranteed
🔧
Precision Fitment
🚀
Fast & Tracked

What Riders Are Saying

This kit was exactly what I needed to bring my old TRX400X back to life. Everything fit perfectly and the instructions were clear. Great value for the money!
— John D., California
The quality of the parts is impressive for the price. My XR400 runs smoother and stronger than it has in years. Highly recommend 50 Caliber Racing.
— Sarah K., Texas

Ready to Restore Your Engine?

Get your Honda XR400 or TRX400 running like new.

Shop the 50 Caliber Racing Top End Cylinder Kit today.

Vehicle Fitment

Honda TRX400EX — 1996-2015
Honda TRX400X — 1996-2015
Honda XR400R — 1996-2015

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Fitment helpCall 801-899-2520 before ordering
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Professional installationAvailable in Pleasant Grove, Utah

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Need help with this part?

R1 Industries can help confirm product fitment, compare options and arrange professional installation or repair.