Roto Grip
Sinister

Bowler Ratings

PatternStTwCr
Oily:
Medium:
Dry:
Sport:

(1-10 in order of Stroker (ST), Tweener (TW), Cranker (CR))

General Ball Info

Coverstock Info
Name:
76H Hybrid Reactive
Type:
Reactive Hybrid
Box Finish:
4000 Grit Pad
Color:
Neon Yellow and White Pearl / Navy Solid
Core Info
Name:
Cage
Type:Asymmetrical
RG:2.52
Total Diff:0.054
Int. Diff:0.015

The Sinister is the newest HP4 release for Roto Grip. This ball uses a new asymmetrical core that is wrapped with the hybrid reactive 76H coverstock. This cover is finished at 4000 grit, which provides it with plenty of traction that is suitable for heavier volumes of oil.

The Sinister was best for us on our heavy test pattern. We were really able to open up the lane with this ball, especially in the back part of the lane. Tweener and Stroker were close together at the arrows, but Tweener was able to get his ball farther right at the breakpoint. Cranker was farther left with his feet and farther right with his ...

Performance Ratings

NameValueComments
Torque
(1-10)
Length
(1-25)
Back End
(1-20)
Total Hook
(1-100)