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Yamaha WR250X/R Parts > AIS Block Off Kit
When installing an aftermarket exhaust on your Yamaha WR250R/X, the AIS (Air Induction System) is no longer serving any purpose and will cause backfiring/popping on deceleration. Once you remove the AIS from the bike, this kit can be used to block off the port/hose on the bike. Full instructions, with photos, is included.
Fitment: 2008+ Yamaha WR250R and WR250X
** OUT OF STOCK - We no longer carry this product. You can still get it from GraveSport.com.
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