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Sanded Hybrid Reactive Bowling Ball

If they knew what was coming, they’d never sleep.

From out of the shadows, I emerge as the winner. The
moment I hit the lane, I dominate my foes and leave them
agonizing over what’s coming next. My all-new Cage™
Core is the nucleus from which my rage builds, leaving my
competition contemplating their exit strategy. They can
either bow out now, or leave with their heads in their hands.
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What my competition can’t see is that I’ve taken every step to ensure their defeat before I even arrive. My newly designed Cage™ Core is a premeditated plot to produce superior midlane motion without sacrificing down lane continuation. Did they think they had a chance?



I lie in wait, ready to ambush my rivals with a wicked one-two blow. The pearl portion of my 76H™ Hybrid Reactive Coverstock eases through the front end while the solid part provides sure-fire continuation through the breakpoint — allowing me to push my opponents past their breaking points.



I was created to devour heavy oil, but with my 4000-grit Pad finish, my scheme is to adjust my rough exterior to also combat medium to lighter conditions.


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Sinister™ Bowling Ball Technical / Specs

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Coverstock Name 76H™
Coverstock Style Hybrid
Coverstock Type Reactive
Weight Block Cage™ Core
Color Neon Yellow & White Pearl / Navy Solid
Finish 4000-grit pad
Finish Method Can be polished
Durometer 73-75 on D-Scale
Flare Potential 7+ Inches/High
Weights 12lbs - 16lbs
Release Date 08/26/14


Weight Radius of
Differential PSA Differential
16 2.52 0.053 0.016
15 2.52 0.054 0.015
14 2.53 0.054 0.014
13 2.57 0.032 0.010
12 2.59 0.029 0.008

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Lane Comparison

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to Glory.

Compare the shot shapes of any two balls in the current Roto Grip lineup by choosing your style, any lane condition and the two balls you want to see go head-to-head.

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Anyone can throw a strike.....But how's your spare game?
Recently Won my 3rd ABT Title 2nd of the year in a month span. Just bought the Sinister and Hysteria...
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2nd Game, 300 with my Sinister
I got a Sinister this past Friday before league. Threw one practice game with it just to get a feel,...
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Sinister Ball Review
Ball Review
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Honor Scores

300 Game
Ken Romba
Hackensack , New Jersey
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300 Game
Rodney Wilkins
Newnan, Georgia
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5 New Ball Release Right Around the Corner...Check Out Star Search To Get the Right Ball For Your Game!
Read the story presents Roto Grip #OwnIt product launch webinar tomorrow, limited space still available register today!
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Roto Grip Rolls Out Five New Balls In Its' HP Lines Today, In Orlando
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