Radical Ringer: A Yamaha BW'S Built For The Track

The stock 50cc air-cooled engine is long gone. At the heart of this BW’s is a Malossi MHR 94cc competition kit, a serious upgrade that provides the foundation for its track-focused performance. Keeping the high-strung two-stroke cool under race conditions is a custom liquid-cooling system, ingeniously adapted from a Yamaha YZ125 motocross bike and powered by a water pump from a Mercedes-Benz W212. It’s a testament to the builder’s resourcefulness, blending top-tier Italian performance parts with proven OEM components from the motorcycle and automotive worlds to create a reliable and potent powerplant ready for the circuit.

"It is a very worthy thing to slowly promote this culture so that the public can accept it."

Power is nothing without control, and the chassis has been comprehensively upgraded to handle the engine’s output. The front end is now managed by a set of Shark Factory L35 inverted forks, paired with a matching Shark Factory X2 RT rear shock. An RPM steering damper eliminates any threat of instability at speed. The braking system is equally serious, featuring a Brembo four-piston caliper, a custom 220mm PBF disc, and a Brembo 16x16 CNC radial master cylinder for precise feel. The most significant handling upgrade, however, is the SRP carbon fiber front wheel, drastically reducing unsprung weight and allowing the suspension to work more effectively.

Visually, the scooter is a bold declaration of intent. The full-body graphics package by Hashiriya International screams ‘90s-era Japanese street-racer, with vibrant pink and neon yellow clashing against a black background. The aggressive aesthetic is backed up by functional, lightweight components. Carbon fiber is used extensively, from the Imenotteri handlebars and SRP front fender to a custom lower belly pan, all contributing to the bike’s purposeful stance. Even the smallest details, like the Domino grips and Koso digital gauges, have been chosen to complete a cohesive and competitive build that has already proven itself with a podium finish at a local event.