I don't doubt the performance of the Sprint filters, but in this case for whatever reason a piece has broken off and it cannot of gone anywhere else but down the inlets, so iv realistically gotta pull the head to check the valves and seats, i can't say the bike is running particularly differently and i don't know when it broke off. But it has broken off.Sprint is the only filter I've ever noticed actual top end gain, and I've tried almost everything on the market
It does feel like a cheaper harder plastic but i am not sure weather that is the problem, its possible its just a a one off manufacturing flaw.How brittle is the rest of the plastic? Seems like a big chunk and like someone else mentioned, maybe down in lower airbox or airduct funnel? I would think piece that large you would notice a change in throttle response or harsh plastic burning smell?
im the only one who works on my bike its done around 10,000 with this filter i normally clean the filter every 2500-3000 it was intact last time i fitted it no doubt that what ever happened happened while it was fitted, its a road bike and doesn't get pushed to limits very often.there is no way that the air pressure will break it … maybe someone grabbed from the corner to clean by blowing air.
I don't trust those filters ... several testimonials that lets in a lot of dirt
Its a filter for the bike i fitted it new and no one else works on my bikes. Its not had reason to be modded whatever happened happened in the bike once fitted.This looks like a filter that is not for your bike. Looks like someone ground it to make it fit and did a poor job of it.
I disagree, even though it doesn't appear to be running indifferently plastic has got into the engine it may well be not fowling a valve to seat, but the break in the plastic filter is new and i want to clean the pistons valves and seats of anything that could cause hot spots, pre detonation or anything that could cause premature wear or tear, its a motorcycle.No reason to pull the head just pull the throttle bodies off if you wanna go digging, I've seen plastic like that stuck in a jeep intake port for a long time. Eventually held the valve open and had no compression. Took piece out and ran fine.