This is the airfilter Twin Motorcycles tested and used for there Harley Davidson stage 1 Sportster KIT look here for the testing info.
It fit's al sportster 2004-2011 models.
Chrome version / stainless mesh airfilter
• Sportster models require the purchase of a custom outer air cleaner
• These kits can be used as an exposed filter design when using one of our Stage 1 covers.
We will add the covers later in our webshop.