[Wade Congdon]

We were out of two-piece RMS01 Viton® Rear Main Seals for a bit but now have them back in stock. Serrations can be an issue if they are aggressive or deep. Otherwise not a problen with either the two-piece or one piece rear main. The key to installing these seal is to fit them to the block. That means taking material from the OD rather than the ends (two-piece). That means taking material from the OD rather than making multiple cuts (one-piece) The crank needs to be out to install the one piece for the specific reason of fitting the seal to the block. You put the seal in the block and cap and look at the cut. If there is distortion you sand the OD until it is minimized or gone. When installed this way there is no better seal on the market. Call anytime with questions! We take calls evenings and weekends as well.