AMA Pro Road Racing Competitor Bulletin #2011-02 To: All AMA Pro Road Racing Competitors Date: February 3, 2011 Effective Date: Immediately Subject: XR 1200 Primary Drive, Daytona Based on testing conducted with our series partner Vance and Hines at Daytona International Speedway, AMA Pro Racing is mandating the following drive gear and primary drive chain: Primary Chain 96Link Part Number 40147-04 Rotor Sprocket Assembly Part Number 30029-08 This will change the primary ratio from 1.68 to 1.5. When run in conjunction with a 30 tooth front pulley and a 66 tooth rear pulley, it will provide adequate gearing to run in a multiple bike draft without hitting the rev limiter. Parts can be obtained through your local Harley Davidson dealership or Vance and Hines at 317-852-9057. More, from another competition bulletin issued by AMA Pro Racing: AMA Pro Road Racing Competitor Bulletin #2011-03 To: All AMA Pro Road Racing Competitors Date: February 3, 2010 Effective Date: Immediately Subject: XR1200 Muffler Baffles A new stainless steel baffle packing material is available for the XR1200 Race Kit Exhaust (#37539 or #37537-R). The new packing improves horsepower and enhances the sound quality at the track (approximately 2dB higher). Part # A130SW-R Price $44.78 (2 required) Professional installation is available at no charge to any teams that send their baffle assemblies to the race shop no later than February 23rd. Ship to: Vance and Hines 1211 Northfield Drive Brownsburg, In 46112 317-852-9057