NSA Pro Stock snowmobile racers have been preparing for the 2009 Wahl Challenge series which would begin in early June, according to a Wahl Bros. Racing Project press release. This mini-series will be in its' second season and the limited edition traveling trophy has been a hot topic throughout the snowmobile racing community.Wahl Bros. Racing Products will be sponsoring the "Wahl Asphalt Challenge" again this season, which is a separate points series within the NSA Championship Points program. The Wahl Racing Asphalt Challenge points series will be comprised of the following three NSA event dates include: June 13, 2009 - August 8, 2009 - September 13, 2009NSA will track a separate points system for these 3 events and the top four places in this points series will be paid out after the July 11th race as follows:1st - $800.00 2nd - $400.00 3rd - $150.00 4th - $150.00 Each racer must be a member of NSA to compete in the Wahl Challenge series, but no extra membership fees or additional entry fees will be required. A special thank you goes out to Dave Wahl and Wahl Bros Racing on their continued support of the NSA Asphalt series.For more information on Wahl Bros Racing products, visit www.wahlracing.com