yeah i have one on my 400ex, i looked them up and they only have a couple left for certain bikes. i like the exhaust.

 

A rectifier is not a stator. A rectifier coverts ac current to dc current to charge your battery and run your lights.I think the 400ex has a dc magneto so you would have a voltage regulator and not a rectifier. Start with a new battery. Hope that's all you need

 

I love mine. I have the down turn tip. I had a white bros E2 on my EX that had the discs. Not a fan of the disc tip much. Sounds great though. I've preffered it to every exhaust I've heard on a 450 until my buddy got the Dasa.....D@mn him. I want one sooo bad. It's a beast.

 

alright cool thanks woodside warrior, yeah i llike the sound of mine my buddy that i go to the dunes with he has a yfz 450 and has a LRD exhaust its sounds really good.