Cannondale Gemini 900 Aluminium Full Suspension Frame Size Medium = 17 inch 3 Setting Rear Travel 170mm-150mm-140mm Cannondale Headset Cups With Bearings Which Are Smooth 26 Inch Wheels Size Quick Release DropOuts With 135 mm Width Length Of Headtube With The Headset Cups Is 135mm Or Without Is 115mm Seat Post Size 27.2mm Black Bolt Type Seat Clamp 68mm Bottom Bracket Shell Width Comes With Shock Mount Bolts Good Solid Frame With Some Cable Rub To Paint Work In Places But Not Deep And Some Paint Chips As To Be Expected Of A Used Off Road Bike Frame No Dents No Cracks Doesn’t Come With Shock Takes Shock Size Of 200x57mm (7.875×2.25) z512.