![]() Not sure if light weight is important or not, but that's about 1/3 of a pound. ![]() They are about 150+ grams lighter than a SRAM NX 155mm which uses a steel spindle and comes with a steel chainring. Trailcraft are the most expensive, but have an alloy bottom bracket spindle to keep the weight low and come with an alloy chainring. There are three pretty popular upgrade options, but all seem to be GXP style BB:
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