The Naraku 150cc offers the perfect solution for discreet engine tuning and a small budget at the same time. The 60mm enlarged bore alone results in a noticeable increase in engine torque and KW output. We recommend, especially for YI3...

The Motoflow 125cc replica aluminium cylinder with Steelliner liner has the same bore as the original Yamaha cylinder and is an excellent replacement cylinder kit. Suitable for Yamaha YI-3 engines Scope of delivery as shown with complete...

With this 80cc bike engine kit, you have everything you need to turn your bike - or whatever you want - into a gasoline-powered vehicle! Whether it's a mountain bike, beer crate or DIY go-kart - grab the kit and get started right away!...