Part Number: 25-2191 UOM: 1 - SET Summary:Chrome buffalo riser set is forged aluminum and has a 1.10" post diameter. Stems can only be used with a stock top clamp or a billet cap clamp. Use 1/2" -13 mounting bolts, sold separately. Sold as a pair. Style: Buffalo Size: 6-1/2 inch Fitment: Custom Application Tech. Notes:Suggested to use #26-0540 cap clamp.Measurements: Bottom O.D.: 1-1/8" Country of Origin: Imported