This is the "Pro Pack" we recommend with the purchase of the 4.8 kit (#13400) to fine-tune your machine for any class or track condition. This pack contains some of our highest recommended tuning options: optional stiffer .032" rear steer T-Plate, (3) 1 oz tungsten weights, (2) 0.15 oz aluminum weights, and a car/truck style plow blade to mount on the front bumper (4-40 x 1/8" aluminum button head screws included). 

Nearly $150 value when priced out separately, all for just $99.99. Buy the Pro Pack and save big!!!