Derailleur Hanger 57 for K2, Raleigh, Dropout, This is OEM K2 Grey Hanger. Purchased from K2 Bikes. These fit other brands as well, please see below. Note: DROPOUT-57 mounts on the OUTSIDE of the frame dropout. DROPOUT-89 is the same shape, but mounts to the INSIDE of the frame dropout. Screw Bolt: M3x8 Flat Head Screws - Included Equivalent To: K2 Part Number K013906 Important: Always check the photo of the hanger we recommend against your hanger. If it does not look correct, it will not fit. Please contact us if you are unsure of which derailleur hanger you will need. Derailleur Hanger Fit is based on all of the following: Bicycle Brand Model Name Model Year Each Bicycle Manufacturer uses multiple types on their bicycles. Different Model Years may use different hangers. Compatiably List: BeOne BeOne: Killer Bee Team: 2001 BH Cinelli Cinelli: Aliante: 2004 Cinelli: Estrada: 2006-08 Cinelli: Unica: 2002-08 Garneau K2 K2: 3000 Road: 2006 K2: Mach: 2002-03 K2: Mod: 2001-03 K2: Tirreno Razza 2000: 2006 Marin Motobecane Motobecane: Immortal Force Olmo Olmo: Zeffiro Carbon Optima Opus Opus: Allegro Raleigh Raleigh: Team Heritage: 2003 Raleigh: Team: 2002-04 Ridley Ridley: Crosswind: 2006 Ridley: Dean Force: 2012 Ridley: Dean RS: 2012 Ridley: Helium 12: 2012 Ridley: Noah RS: 2011-12 Ridley: Supercross Stevens Stevens: Strada 800: 2014 Stevens: Strada 900: 2014 Torelli Viner Viner: Pro Team