R&D Part # 803-01510: PRO STOCK RACING W/8650/8750/8850 REV LIMIT (specify rev limit when ordering)...Works great for Pro Am Stock Class racing where peak riding rpm range will be 8450-8550. R&D suggests tuning the prop pitch and pump cone to achieve 8450-8550 rpm at full throttle. NOTE: R&D has verified the Pro Stock Tune with an 8650 rev limit produces Pro Stock Top Speeds of 76-77mph. Race gas required. Call R&D for set up and recommendation.
