Doubletake Base Kit Includes 1.125" Ball Stud, 10mm x 1.25 bolt long and short, 35MM Reverse Thread Bolt 10mm x 1.25, 55MM Reverse Thread Bolt 10mm x 1.25, 10mm x 1.5 short bolt (BMW), lock washer. Weight ball only: 20 gram. Weight ball kit: 230 grams Materials: Billet Aluminum, Nitrile, hardened Steel Diameter: 1.125” (29mm) Height: 1.37" (35mm) Extension: 0.78" (20mm) Universal Fit. Every ball kit includes 5 bolts to allow fitment to any bike and eliminate unsightly adapters. Larger size. Our ball is 1.125”, and even that small increase in diameter makes a big difference in rigidity. This means you don’t have to overtighten the arm to keep it from moving while riding. Won't Crush. Our aluminum-filled base ball, coated with high-quality nitrile rubber won’t degrade under extended compression. You won’t have to repeatedly adjust your mirrors, because both ends of the system are designed to last. Won't spin. We include a lock washer that secures the ball in relation to the bike.
