Twin-Air filters has signed on as one of the sponsors of the upcoming Racer X Boise Inter-Am event for classic motocross bikes.
Twin-Air has a long history in making Motocross air filters and many of the bikes being raced still use them today.
The event features 2 complete tracks for Vintage and EVO classes.
Saturday March 28 features 1974 and earlier bikes while EVO's will race on Sunday the 29th.
For more info go to http://www.idahovintagemx.com/