• Replacement Knobs Replacement Knobs
  • Replacement Knobs Replacement Knobs

Replacement Knobs

$15.00

Order a replacement knob for your HydroBat Aqua Surge (Baseball) or Aqua Pearl (Softball).

  • Aqua Surge (Baseball)
  • Aqua Pearl (Softball)

Shipping & Returns

We offer fast, reliable shipping on all HydroBat products. If you're not completely satisfied with your purchase, you may return unused items in their original condition within 30 days of delivery for a full refund.

Materials

Each HydroBat comes with a fully customizable end cap and a protective UV epoxy-coated finish, ensuring it lasts for years while maintaining its professional look.

TRUSTED BY TEAMS AND TRAINING FACILITIES COMMITTED TO BUILDING STRONGER, FASTER, MORE PREPARED HITTERS.

What Are The Differences Between Each Model?

  • HydroBat (Water Flow Resistance)

    The standard HydroBat is built with a baffling system inside the barrel. This design helps control the movement of water during your swing, creating a smoother feel and reducing excess slosh. The baffling makes it ideal for players at any level who want the benefits of resistance training, but with a more balanced, controlled swing path. It’s great for building strength, consistency, and mechanics without overwhelming feedback.

  • HydroBat Pro (Maximum Water Flow)

    The HydroBat Pro removes the baffling system completely—meaning you feel the full force of the water shifting inside the bat. Every swing delivers maximum resistance and instant feedback, amplifying the challenge. This version is best suited for advanced athletes who want to push their training further, improve bat speed, and learn to control barrel movement against heavier fluid dynamics. The Pro demands precision and rewards power.