Forums 🚥 PiT STOP 🔧 Hyosung Technical Help GT250 airbox outlet ports model 2010
- This topic has 2 replies, 3 voices, and was last updated 2 years ago by
♠️ M77.
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Feb 11, 2024 at 9:24 PM #12300
Hi I bought a used hyosung and want to know whether the airbox is supposed to have a line that’s unconnected like this or is there a missing piece? lt’s on the left side. My model is hyosung gt250
There’s also another one at the back of the airbox which looks like this but don’t know about it either.
My biggest fear is that it’s a hose that went missing and the previous owner didnt realise it. It may hurt the longevity of the bike.
Any help will be appreciated.

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Feb 12, 2024 at 5:55 AM #12304
It was something for the emission controls which were a pain but that’s another story, just put a blanking cap on it it won’t cause any issues.
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Feb 12, 2024 at 11:30 AM #12305
As per Simon 🙂 Emissions Control Pipes (Some models have external ISCV units! instead of being intergrated in to the airbox)
Also your being being a 2010 , should have this electronic box below (it connects to the airbox then feeds the air back down to the engine mini metal pipes next the the exhaust manifolds
https://www.ebay.co.uk/itm/255983052559If your bike is supposed to have an external ISCV unit (pre-2012) (some models!) , look at this mount that hooks to the frame and the corresponding ISCV unit
https://www.ebay.co.uk/itm/254517765774
https://www.ebay.co.uk/itm/256006871424
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