(1)Full sets of aluminum parts use #6061 aluminum meterial  (2)CNC processed super-quality frame kits with forging workmanship  (3)Front 14' rear 12' aluminum wheel rim,Kenda tube  (4)Hydraulic disk brake for front and rear with steel brake cables  (5)Adjustable upside-down front shock and adjustable rear shock (6)Specially processed stainless steel nuts and bolts   All parts for this model is prcessed by high precise CNC