NOTE: We do exchange unopened parts; All boxes are marked on the outside. You should verify the sizes needed before opening the boxes. Before doing any boring on the block, your machine shop should have the pistons in hand. We do not accept returns of any Standard sized pistons.
Contact our Tech Support Line for further information at 928-855-6341.
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Due to the stronger solid design (compared to a stock split bushing) of the Pro Rod Bushings you will need to bore the small end of your connecting rod to match the larger diameter of the new bushing. The bushing will then be pressed in and you will hone the inside of the new bushing to fit your wrist pins. Pro Rod bushing installation interference (crush) 0.002-0.0025.