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Monday 6 December 2021

KB Pistons

KB Adds New M-8 Piston Options

KB Pistons, made in Carson City, Nevada, by United Engine & Machine (UEM), has added two new piston upgrade options for Harley M-8 engines. They fit oil and water-cooled engines from 2017 to present with 4.250" bore cylinders.

The company's 107" to 124" conversion and 114"/117" to 128" conversion application pistons feature KB's valve pocket technology for up to 3 mm larger valves. The pistons have type 3 hard anodized crowns and top ring groove, with LINE2LINE abradable skirt coating.