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Engineering the Future of Performance
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THE ULTIMATE 500 PLUG AND PLAY CONVERSION KIT FOR HONDA, KTM, HUSQVARNA AND GAS GAS

WITH ELECTRIC START AND FUEL INJECTION,
FULLY REVERSIBLE

OUR PRODUCTS

AiM technologies for data logging, the best on the market. Tomasin R&D is official reseller for AiM.

ECUs, CDIs, and related accessories featuring AiM, Vortex, and other performance engine control units.

Race-engine preparation cylinder-head porting, camshafts & valve springs, and full GP engine tuning.

Custom 2- and 4-stroke exhaust systems dyno-tested and race-developed to give your motor a boost.

BORN

TO BEND

THE RULES

Listen to the legend as it comes to life. The T500 Engine Kit is not just a performance upgrade: it’s an invitation to unleash your potential. An “Engine within an Engine” that fits without modifications.

This 500cc kit is tailored specifically for the Honda CRF 450R and RX, model years 2021 to 2026.
A true countertrend, we present a plug-and-play engine kit that marries technology with simplicity, offering electric start and total reversibility to the original without modifications.
Experience the symphony of precision engineering.

LISTEN TO

THE LEGEND

CHOOSE

HOW TO DOMINATE THE TRACK:

T500 PLUG AND PLAY

FULLY REVERSIBLE PLUG-AND-PLAY KIT

2stroke kit   –   Electric start   –  Fuel injection

ECU WITH FIVE DEDICATED MAPS

HONDA

CRF 450

2021→2024

CRF 450

2025→2026

KTM

NEW

sx-f 450

2023→2026

XC-F 450

2024→2026

EXC-F 450

2024→2026

EXC-F 500

2024→2026

450 SMR

2023→2026

Husqvarna

NEW

FC FS 450

2023→2026

FE 450-501

2024→2026

FX450

2024→2026

Gas gas​

NEW

MC 450

2024→2026

EC 450F

2024→2026

EC 500F

2024→2026

COMPLETE MOTORBIKE

MX

Ready to dominate

HONDA CRF 450

CRF 450

2021→2024

CRF 450

2025→2026

KTM

NEW

sx-f 450

2023→2026

Husqvarna

NEW

FC 450

2023→2026

Gas gas

NEW

MC 450

2024→2026

COMPLETE MOTORBIKE

ENDURO - SUPERMOTO

KTM

NEW

VM T500

Husqvarna

NEW

VM T500

GAS GAS

NEW

VM T500

DO YOU WANT TO

BECOME A DEALER?

Redefine the realm of motocross performance.

A MASTERPIECE DESIGNED
TO CHALLENGE CONVENTIONS.

REDEFINES SPEED, REDEFINES YOUR LIMITS.

ARE YOU READY TO

RELIVE THE LEGEND?

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LISTEN TO THE LEGEND

NEW 2025 T500 KIT

t500 engine kit | FOR 2025 crf450 | PLUG AND PLAY

'21 TO '24 T500 KIT

t500 engine kit | ’21 TO ’24 CRF | PLUG AND PLAY

CONTACT OUR SPECIALIST AND REQUEST TO BECAME A DEALER

Are you our customer? Contact our expert if you have any questions.

Remember to provide your order number. 

Do you want to became a dealer of our T500? Contact us

Choose the reason for your request:

CONTACT US NOW

Request information about the T500 and its specifications.

Choose the reason for your request:

2026 CRF WITH T500

t500 engine kit | 2026 crf | Ready to dominate

2024 CRF WITH T500

t500 engine kit | 2024 crf | Ready to dominate