KMC K1SL SuperLite Kool Wide Chain - Single Speed 1/2" x 1/8" 100 Links SilverKMC K1SL SuperLite Kool Wide Chain Single Speed 1 2" x 1 8" 100 Links Silver. The KMC K1SL SuperLite Kool Chain is suitable for a variety of single speed riding styles such as BMX or fixed gear while offering substantial weight savings. SL Chain sets a new standard with weight reduction improved shifting performance & enhanced durability The mud shedding design is easy to clean Chain features a heavy duty structure and is treated with a stretch proof