I had the same thoughts and came up with these and a couple other brands that are magnesium. ZUKKA Bike Wheelset,26/27.5/29 inch Mountain Cycling Wheels,Magnesium Alloy Disc Brake/Fit for 7-10 Speed Freewheels/Quick Release Axles Bicycle Accessory https://www.amazon.com/dp/B089NM4RP3/ref=cm_sw_r_cp_api_glc_fabc_-RAbGbEM0HPMH