Patent ID: 8336899

Claim:
Improved fork ( 1 ) for sport motorcycles, including: a support group ( 2 ) capable of being connected to the frame of said motorcycle; a pair of shock absorber arms ( 3 , 4 ), suitable to vary the position of said frame of said motorcycle with respect to the front wheel of said motorcycle as a result of the application of a load, each of which connected with said support group ( 2 ) and comprising an outer sheath ( 5 ) having an inlet ( 5 a ) and a second end ( 5 ( c ) and a stem of force ( 6 ) slidingly and telescopically coupled one with each other; guide and support means ( 7 ), interposed between said outer sheath ( 5 ) and said stem of force ( 6 ) of at least one of said shock absorber arms ( 3 , 4 ), suitable to minimize friction between said stem of force ( 6 ) and said outer sheath ( 5 ), characterized in that said guide and support means ( 7 ) include rolling means ( 8 ) which cooperate by contact with outer surface ( 6 a ) of said stem of force ( 6 ) producing a rolling contact between said stem of force ( 6 ) and said guide and support means ( 7 ) said guide and support means ( 7 ) comprise one or more composite sliding rings ( 19 , 20 ) internally coaxial to said outer sheath ( 5 ), said composite sliding rings ( 19 , 20 ) having an outer wall facing the inner surface of said outer sheath ( 5 ) and externally coaxial to said stem of force ( 6 ), said one or more composite sliding rings having an inner wall facing said outer surface ( 6 a ) of said stem of force ( 6 ).