Kawasaki Two-Strokes Only Aluminum Frame Conversion Service

Your Dream Two-Stroke Build Starts Here.

The ultimate machine blends modern chassis performance with legendary two-stroke power. Two Strokes Only specializes in custom Aluminum Frame (AF) Conversions, taking virtually any Kawasaki two-stroke engine and flawlessly integrating it into a modern Kawasaki aluminum chassis of your choice.

Whether you want the brute power of a KX500 in the handling of a late-model KX450F, or a high-strung KX125 engine in a contemporary KX250F chassis, we can make it happen.

Proven Expertise: The Two Strokes Only team is responsible for the top-tier, record-breaking two-stroke builds frequently featured on the Kaplan America YouTube Channel. If you've seen the 70+ HP monsters and the stunning, high-performance AF conversions shown on their channel, you've seen our work. We deliver dyno-proven results, not promises.

State-of-the-Art 3D Scanning & CAD Modeling

At Two Strokes Only, we don't guess—we measure everything with unrivaled precision. The difference between a good part and a flawless conversion is our commitment to state-of-the-art technology, placing our in-house capabilities far beyond the competition.

Precision 3D Scanning

We utilize professional-grade, high-resolution 3D scanning equipment that captures the most intricate details of your frame and engine components, down to single-digit micron accuracy. While competitors rely on rudimentary manual measurements, our scanners create a digital twin of the components, ensuring every contour and critical dimension is captured.

Next-Generation CAD Modeling

Our engineers utilize professional Computer-Aided Design (CAD) software to directly translate the high-resolution scan data into robust solid models. This allows us to digitally fit and simulate the parts before any metal is cut.

The TSO Advantage: This combination of hyper-accurate 3D scanning and sophisticated CAD modeling eliminates human error. We can guarantee perfect clearances, optimal engine placement, and minimal runout—giving you a finished bike that is superior in handling and durability.

FIRST STEP: MANDATORY CONSULTATION

Due to the custom and complex nature of this service, a consultation is required before any purchase is made. This ensures we understand your vision, assess the technical scope, and provide an accurate estimate.

How to Start Your Custom Build:

1. Contact Us: Use the link/button below, or call us directly.

2. Consultation: We will discuss your desired engine (e.g., KX500, KX250) and your chosen chassis (any year aluminum-framed KXF model).

3. Plan: We will determine if your combination fits an existing TSO conversion kit or if custom fabrication is required.

The TSO Conversion Process

Our service includes all the labor and precision engineering necessary to create a perfect engine-to-frame fit.

Two Paths to Conversion:

1. Using a TSO Kit: If your engine and frame combination matches one of our existing, proven conversion kits, we utilize these specialized billet components for a fast and ultra-clean conversion.

2. Custom Fabrication: If your requested combination is unique, our master fabricators and welders will design and create the necessary custom engine mounts and brackets to ensure perfect alignment, durability, and aesthetics.

What the Labor Includes:

• Engine placement and mock-up.

• Modification of the aluminum frame to accept engine mounts.

• Welding/bolting of custom or kit-specific engine mounts.

• Modifications for pipe clearance, water pump/hoses, and air boot alignment.

• Final assembly of the engine into the chassis.

Ready to Build the Ultimate Kawasaki?

The cost of this service is highly variable and depends on the complexity of the conversion and the necessary parts (billet cases, cooling systems, exhaust, etc.). Contact us today to begin your consultation and receive a detailed quote.