PRI 2010: JE Pistons? New 5.000 and 5.300 Bore Space Slugs
 

Five-inch bore space motors have been becoming extremely popular in Pro Mod racing the last year as companies push new parts for these mountain motors. One of those companies that is contributing their expertise is JE Pistons. The 5-inch bore space pistons come in 5.000 and 5.300 bores.

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