6 sets of chrome muffler bearings (75 HP increase) to speed your exhaust flow and 4 teflon journal cranks to keep the bearings from wearing on 500+HP motors. These fit all LSX motors up to 1000HP. 135.00 for the bearings and $875.00 for cranks. Serious buyers only! The first 2 purchases will receive a set of carbon fiber 45 degree pushrods with petroleum jel lubricant. This is a once in a lifetime purchase to make your LSX motor fly!