Yamaha G1 / G2 / G8 / G9 / G14（1978-1995年）プレフィルター

This pre-filter fits right over my old G2's air filter and keeps the big stuff out before it reaches the element. Cut it to size in a minute and it feels like durable foam that should last a while.

I was worried about dust getting past the stock filter on my old G9, but this foam pre-filter fits perfectly over the element. It's a simple, inexpensive way to add an extra layer of protection.

Wasn't sure a foam sleeve this cheap would last, but it's been on my G9 for a few months now and still looks fine. Slides right over the element and catches a ton of dust before it ever reaches the filter.