I do classic car restoration for a living and have never heard of clearing over chrome? I'm not doubting you but why would you clear over chrome when it's already durable? I HAVE cleared over polished aluminum,brass, and polished potmetal, but it does give it a little hazy of a finish. I've only done this for customers who don't want the hassle of repolishing down the road. Back to the bikes though, I have an AMF skylark which is completely chrome just like a spaceliner and it didn't have any clear on it? It's posted in the for sale ads and it just sold btw.