86-20 Sportster, (except 08-10 XR1200, 10-13 XR1200X)
Note: For convert 883 cc to 1200 cc.
Manufacturer: KB Pistons, 1040 Corbett Street, 89706 Carson City, Nv, United States of America, https://www.uempistons.com
Responsible person in the EU: Custom Chrome Europe GmbH, Carl-von-Ossietzky-Str. 8, 55459 Grolsheim, Germany, https://www.custom-chrome-europe.com, info@customchrome.de
Computer designed to give a lightweight yet strong piston. Forged out of 4032 low expansion 11% silicon alloy. This design and material along with an Accumulator groove between top and second ring produces a better ring seal. They also feature top land mini grooves which help reduce detonation. Anti-Friction Coated Skirts on piston sets are noted.