RANSOTO Honda TRX400 Engine Kit WWJ181 Durable Cylinder Piston Set

Description

Product Overview

The RANSOTO Honda TRX400 Engine Kit (model WWJ181) provides a full set of core components to restore peak performance to your sport‑bike. Crafted from high‑grade aluminum and reinforced with precision‑machined pistons, the kit includes a 89mm cylinder, piston, piston rings, two O‑rings, wristpin with circlips, gasket and a compatible spark plug. Weighing 7.5 lb and packaged in a compact 13.3 × 9.96 × 6.81 in box, it meets OEM specifications for part numbers such as 12100‑HN1‑A70 and 12191‑KCY‑672.

Usage

Ideal for Honda TRX400EX (1999‑2008), TRX400X (2009, 2012‑2014) and XR400R (1999‑2004) models, this kit restores engine power for off‑road adventures, trail riding and competitive racing. Whether you are rebuilding a worn engine or upgrading for better durability, the components fit seamlessly without modification. The kit is suited for both seasoned mechanics and hobbyists seeking a reliable, plug‑and‑play solution.

Why Choose Us

RANSOTO commits to premium materials and strict quality control, delivering parts that endure extreme temperatures and high‑rpm stress. Each component undergoes rigorous testing to match or exceed OEM standards, ensuring a perfect fit and long‑lasting reliability. Our one‑year satisfaction guarantee and responsive customer support provide added confidence for every purchase.

Key Features

• Complete engine rebuild kit eliminates the need for multiple separate purchases.
• High‑grade aluminum cylinder resists wear and heat for extended engine life.
• Precision‑machined piston and rings deliver smooth compression and power.
• All OEM‑matched parts ensure a perfect fit without additional machining.
• One‑year warranty and dedicated support give peace of mind after purchase.

FAQ

Which Honda models are compatible?

The kit fits Honda TRX400EX (1999‑2008), TRX400X (2009, 2012‑2014) and XR400R (1999‑2004) engines.

Do I need additional tools for installation?

Standard hand tools and a torque wrench are sufficient; no special equipment is required.

Is the spark plug included compatible with my bike?

Yes, the spark plug supplied matches the OEM specifications for the listed Honda models.

What is covered by the one‑year warranty?

The warranty covers any manufacturing defects or premature wear under normal use conditions.

Can I use this kit for performance upgrades?

While the kit restores original performance, the high‑quality materials also support modest power enhancements when paired with proper tuning.