- The Replacement Hardware Kit includes all of the parts needed to replace the saddle clamp hardware on your Dual-Position Seatpost - What's in the Box: Qty. 1 35mm Saddle Clamp Bolt (Front) Qty. 1 30mm Saddle Clamp Bolt (Rear) Qty. 2 Round Saddle Clamp Nuts Qty. 2 Spherical Washers