Motiv
Sigma Tour
PatternStTwCr
Oily:77.58
Medium:999.5
Dry:655
Sport:6.577

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

Coverstock Info
Name:
Atomix Reactive
Type:
Reactive Solid
Box Finish:
2000 Grit Wet Sand
Color:
Black
Core Info
Name:
NA
Type:Symmetrical
RG:2.47
Total Diff:0.044
Int. Diff:NA

The Sigma Tour offers a new cover and new core for Motiv. The cover is a 2000 grit wet sanded solid version of what Motiv calls Atomix Reactive. This cover creates a stronger read of the midlane than the MOTIVator shell which was used on the QZ2 Backdraft.

The overall hook potential of the Sigma Tour matched up best with our medium pattern, which is similar to most typical house shots across the country. The length allowed the Sigma Tour to waste virtually no energy in the front of the lane. It picked up the midlane and made its strongest move at the breakpoint. All three testers were able to play this pattern with no difficulty. Cranker had the best...

To read the full review, please visit:
https://www.bowlingthismonth.com/bowling-ball-review/motiv-sigma-tour/

Performance Ratings

NameValueComments
Torque
(1-10)
6.5
This ball offers a strong motion that is not a snap type reaction downlane. The strong motion is in the correct part of the lane to smooth out any potential over/under reaction.
Length
(1-25)
13
The length of the Sigma Tour fits under the Raptor and Primal, and above the Recon. It is perfectly suited for anything between medium light and medium heavy patterns.
Back End
(1-20)
15
The Sigma Tour makes a strong arcing motion in the back end of the lane. The Atomix Reactive coverstock really blends out the lane regardless of the oil pattern.
Total Hook
(1-100)
51
The total hook amount makes the Sigma Tour the perfect benchmark ball for Motiv. It is just the right combination of power and control.

Strengths: The versatility of the Sigma Tour is its biggest strength. When we shined them up we could strike on the dry, when we scuffed them we could strike on the oil, and out of the box it matched up with medium test pattern.

Weaknesses: Only the surface finish will handicap the bowler’s ability to use the Sigma Tour. Out of the box, the Sigma Tour will struggle on heavy conditions as well as very dry ones.

Overall Summary: The Sigma Tour is the single most useful ball to date from Motiv. This ball handled everything it was thrown on and could be drilled and surface prepped to be useful on nearly any condition.