Enrico Tomasin, a former engine specialist at Honda for its MXGP program, has taken his passion for two-stroke dirt bikes to the next level. After years of dedication, he founded Tomasin Racing, a company focused on pushing the boundaries of motorcycle competition engines and electronics. One of their most exciting innovations is the T500 Engine Kit, a plug-and-play conversion kit designed to turn a 2021–2024 Honda CRF450R into a powerful 500cc two-stroke machine.
Production of big-bore two-stroke dirt bikes has become a rarity in recent times. However, Tomasin Racing’s T500 Engine Kit proves that enthusiasts are not willing to let the two-stroke legacy fade away. With three years of relentless development, Tomasin Racing has created a kit that brings new life to your Honda CRF450R. The best part? You won’t need to modify the CRF450R’s aluminum twin-spar frame to accommodate this two-stroke powerhouse.
The T500 Engine Kit includes a comprehensive set of components, ensuring a seamless conversion. Here’s what you can expect to find in the kit: engine cases, crankshaft, connecting rod, cylinder, piston, cylinder head, reed valve, billet intake manifold, spark plug, gaskets, exhaust manifold, pipe, silencer, a dedicated ECU, an electric water pump, billet water pump cover, titanium cylinder studs and screws, and a 14-tooth countershaft sprocket.
For those who prefer to use their existing gearbox from a stock CRF450R, Tomasin Racing offers an option to purchase the big-bore two-stroke powerplant without a gearbox. If you opt for this, you will need to use the gearbox from your CRF450R.
Now, let’s talk about the price. The T500 Engine Kit without a gearbox is available for 8,500 euros, which is equivalent to $8,981 at the time of writing. If you prefer to have the gearbox included, the total cost will be 10,500 euros, roughly $11,094.
The T500 Engine Kit is a testament to Enrico Tomasin’s passion and expertise, born out of years of working with Honda’s motocross racing program. This kit is more than just a collection of parts; it’s a gateway to transforming your Honda CRF450R into an entirely different beast.