Bowler Ratings


Bowler ratings are from 1 to 10 in order of Stroker (ST), Tweener (TW), Cranker (CR)

Note: Ratings are only available to our premium members.

General Info

Reviewed:February 2012
Coverstock Specs
Name:MP Gen 4 Reactive Pearl with Performance Additive
Type:Reactive Pearl
Box Finish:500 / 1000 / 2000 Abralon / Powerhouse Factory Finish Polish
Color:Green / Black / Yellow
Core Specs
Int. Diff:0.008

For details on our standard test layouts, please click here.

The 508A is the newest bowling ball from Track. This ball is both a new ball with the “A” Angular motion as well as a new 5 series ball. The core shape is taken out of the 607A Special Edition. The numbers were altered from that ball to raise the RG and slightly raise the differential. This ball also uses a new coverstock formula. The MP Gen 4 Reactive Pearl with Performance Additive pushes down the lane easily, saving its power for the back end movement.

The skid/flip nature of the 508A made it a natural fit for our medium test pattern. Stroker was able to play up the boards and let the angular nature of the ball make the move in

The BTM Ball Testing Team

About The BTM Ball Testing Team

The BTM Ball Testing Team is led by Eric Martinez. Our team of three testers has thrown and reviewed hundreds of bowling balls for Bowling This Month. When not testing balls for BTM, Eric owns and operates University Pro Shop in San Antonio, TX and he is an avid competitive bowler. Click here to learn more about how we test and review bowling balls.