Inside look at 2 stroke valves. How are triple blade power valve operates in our 500cc kits.#2stroke Скачать
BRC500 is perfect for anything dirt bike. #2stroke #motocross #motorcycle #supercross #racing Скачать
Building a yz500 crank shaft, How to #motocross #yz250 #2stroke #supercross #dirtbike #motorcycle Скачать
