Sun ringle mtx 33 disc mtb rimsun ringles mtx 33 disc mtb rim is a robust and durable rim to compliment a new custom build ideal for all mountain freeride and downhill enthusiasts this mtx 33 disc mtb rim weighs 660 grams and has been engineered to cope with heavy landings and violent trails this rim will take more punishment than you can dish out with a bead width of 33 5mm this mtx 33 disc mtb rim offers solid foundation for maximum handling control pair this mtb rim with a smooth hub