Odyssey`s G-Sport Rollcage rim builds off their famous Ribcage design in a lighter and more affordable price point 6061-T6 and a ribless design when compared to the Ribcage rim reduces the price while still being a rock solid competitor Super tough sidewalls put up with all the abuse the BMX riding presents 20in Odyssey G-Sport Rollcage 406 26 34.1 18.5 Dbl NMSW H-Black 36 SV 455g 389