Roto Grip RST Hyperdrive Pearl Bowling Ball

U-R1 Pearl Reactive cover, RST Core + AI (asymmetric) core. Best for medium to medium-heavy oil.
Manufacturer: Roto Grip
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$289.95
$169.95

The RST Hyperdrive Pearl puts the RST core under a polished U-R1 pearl for length and a strong, angular backend.

  • Coverstock: U-R1 Pearl Reactive
  • Core: RST Core + AI (asymmetric)
  • Specs: 2.52 RG, .055 differential, .017 mass bias (15 lb)
  • Factory finish: Power Edge (Polished)
  • Best for: Medium to medium-heavy oil
  • Weights: 12 to 16 lb
  • Sold undrilled