Retro race sounds in the modern age. As hard as it is to imagine now, there was once a time in recent history when quad racing meant the sweet scent of 2-stroke oil, a slight blue exhaust haze in the air and the music of braaaaps bouncing off the trees. These days the thumping of […] More »

Valves on both ends? Yes, sometimes. Dear ATVC: Appreciated your article on the two-stroke power valve but have to laugh when you say the to-stroke engine is designed around using no valves. If it has a reed valve on the intake side and a power valve on the exhaust side, I’d say it is a […] More »

Didn’t need valves but had some anyway. Valves are a fact of like in the four-stroke engine. Intake valves open which allow fuel to enter the combustion chamber, a spark plugs ignites the fuel/ air mix, sending the piston sailing down the cylinder and then exhaust valves open to allow the spent gaseous byproducts of […] More »

It’s been a minute since we’ve seen a brand new factory 2-stroke. For most of us, the days of the 2-stroke equipped ATV have waved goodbye long ago. Yamaha’s legendary Banshee 350 ceased US distribution back in 2006 and the last production 2-sroke available, the Spanish made GasGas Wild HP 300, suffered a similar fate […] More »

2-stroke plugs tell a story. Dear ATVC: I recently purchased an ‘05 E-ton 90 2 stroke, oil injected quad for my daughter. I noticed the oil light stays illuminated while running. The previous owner states it’s always been that way and not to worry about it. My daughter rode it for about 2 hours total, […] More »

Made in Taiwan once upon a time. Dear ATVC: I am trying to find out information regarding a quad I purchased. The sticker says it’s a BSI 100cc (2-stroke, water cooled ATV). I am trying to find spares like head/piston but unable to find any information on the quad. Any assistance would be greatly appreciated. […] More »

A Honda 250R only by name. Dear ATVC: I read with great interest your look back at the Kawasaki Tecates and wondered about something. See, I was pretty young when the 2-strokes disappeared but remember clearly my local track’s gate filled with Honda 250Rs and nothing else for years (all the way until the race […] More »