Ns bikes enigma mk1 mtb rimthis tough high end rim is made of alloy with a special heat treatment procedure they are lightweight but extremely strong and way stiffer than standard alloys used in most rims a sleeved connection results in a strong and impact resistant rim which also saves weight due to the specific rim profile the enigma rims are 31mm wide and 22mm high and are a perfect choice for all heavy duty mtb applications including dh dirt jumping and even heavy duty enduro anothe