Flex Frame 2 with Chromoly Round Rails (7mm)

  Rail Specs: Chromoly / Titanium -  7mm round   Cyclist Weight Limits: Chromoly Frame: 280 lbs. Titanium Frame: 240 lbs.    Carbon Fiber Frame: 210 lbs. Included: BiSaddle Base Frame (2) 16mm Rear Adjustment Bolts (2) 12mm Front Adjustment Bolts (for Bonneville, Stealth, Sprint) (2) 14mm Front Adjustment Bolts (for Saint, Saint Pro, Hurricane, Hurricane Pro, SRT 1.0)  (2) Grip washers - for the front only Please note that using the incorrect length of hardware can result in damage to the saddle, and will not be covered under warranty.   The Carbon Fiber Oval Rails are not meant for MTB and Gravel. It is best for Tri and Road. It is super light and has a rider weight limit of 210 pounds.The BiSaddle Chromoly and Titanium rails are round and will fit all seat posts including side clamp, top clamp and stationary bikes (Peloton). They measure at 7mm round. The BiSaddle carbon fiber frame has 7mm x 9mm oval rails and will only fit top clamp seat posts or posts specifically made for