Roto Grip SD-73 Classic Bowling Ball

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This section is for informational purposes only. Balls are no longer available for sale.

The "Classic" is back. Roto Grip is proud to announce the release of the SD-73 "Classic". The ball that created the most controversy ever in the industry is back by popular demand.

The Low RG (2.50), High Differential (.073) weight block is illegal by today's USBC standards, but since it was approved prior to the rule change it is perfectly legal for all USBC and PBA Regional competition.

The Sure Grip solid reactive coverstock is a performance proven winner over the last several years and is still one of the highest friction coverstocks on the market today.

More Information
Manufacturer Part NumberRSA
Lane ConditionMedium to Heavy Oil
CoverstockSure Grip Solid
Cover TypeSolid Reactive
CoreHigh density cylinder with "flip" block
Core TypeSymmetric
Finish1000 Abralon
RG / DIFF2.50 / .071
BrandRoto Grip
Warranty1 Year Limited Warranty
Item ReturnsSorry, the item can't be returned
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Roto Grip SD-73 Classic
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