Ball Tech Specs

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Get The Fine Details
Si Boards Balls are unique in form and function. Your ball will last a lifetime and is ready for you to put it to the test.
 
Urethane Material:
  • Solid urethane with no air, gel or sand filling to break open.
  • Exceptional resistance to friction, oils, solvents, UV, extreme temperatures and is odor free.
  • Higher strength and durability compared to rubber, plastic or vinyl.

Construction:
  • Made as one complete unit and avoids seams or piecing together.
  • Balls are perfectly round.
  • Balls will not break open or wear with repetitive slamming.

Texture:
  • Slight tacky feel with grip bumps for texture.
  • Easily grips the board and ground surfaces for safety.
  • Will not slip on carpet or tile floors compared to wood or plastic rollers.

Hardness:
  • Very stiff with slight compression.
  • Best described as the hardness of a lacrosse ball.
  • Not as hard or slick as a bowling ball.

Rebound Speed:
  • The balls rebound back to you as hard and fast as you throw them.
  • In many cases, users are caught off guard at the speed of the rebound.
  • If the ball has a second bounce with spin, the rebound is even faster than the fist bounce.

Rebound Heights:
  • Will return about 70% of its height from a still drop.
  • When slamming on the ground the rebound can be as high as 3 times the drop height.
  • When slamming against the wall the rebound is extremely forceful compared to an air filled ball.
  • When slamming on the ground and into a corner the rebound will easily double your height.

Rolling And Bouncing:
  • Due to the solid mass and high rebound, the balls continue to roll very far.
  • Heavier balls carry more momentum and require more muscular control.
  • The balls will continue to bounce off of surfaces like a pin ball machine.

Size And Weight:
  • As the ball size increases the weight increases.
  • The weight may feel heavier when throwing the ball due to the high rebound.

Solid Surface:
  • The balls need a solid surface to properly rebound.
  • The balls will not rebound on grass.
  • Always use a solid and smooth surface such as concrete or asphalt.
  • Avoid throwing against brick, plaster, wood or plastic walls.

3" Mini ball:
  • 0.6 lbs in weight
  • Beginner ball on all Starter boards
  • Perfect size and weight for baseball/softball repetitive throwing drills

5" Small ball:
  • 2.5 lbs in weight
  • Advanced ball on all Starter boards
  • Beginner ball for Turbo, Powder, Freestyle and Surf Original boards
  • Perfect size for grip strength and working one handed shoulder stability

6.5" Medium ball:
  • 5.5 lbs in weight
  • Not recommended on Starter boards due to shortened rail height
  • Advanced ball on the Turbo and Powder Original boards
  • Intermediate ball on the Freestyle and Surf Original boards
  • Beginner ball on the Commando
  • Very versatile ball for most users
  • Perfect for grip strength for large hands, two handed throws and one handed full body moves

8.5" Large ball:
  • 12.5 lbs in weight
  • Not recommended on Starter boards or Turbo and Powder Original boards
  • Advanced ball on the Freestyle and Surf Original boards
  • Intermediate ball on the Commando
  • Advanced ball for strong users, great for slamming and two handed throws

10" Super Deluxe ball:
  • 20.5 lbs in weight
  • Only recommended as advanced ball on Commando
  • Advanced ball for very strong users, great for slamming and two handed throws