Motiv Sigma Tour Pearl Bowling Ball

A Tour-Caliber Benchmark Pearl

About the Sigma Tour Pearl

The Motiv Sigma Tour Pearl is a tour-caliber, mid-arsenal benchmark built for medium to medium-heavy oil. It pairs the symmetric Sigma Core with a clean pearl cover for a smooth, readable, controllable motion, the kind of dependable shape that earns a permanent spot in a serious bag. Like all of Motiv’s high-performance equipment, it is made in the U.S.A.

The Sigma Tour Pearl pairs that Sigma Core with Motiv’s Atomic Propulsion Pearl Reactive coverstock at a 5000-grit finish. The symmetric core reads the lane evenly and predictably, while the pearl cover clears the fronts cleanly and makes a controllable move at the breakpoint, a readable benchmark with the length a pearl provides.

Understanding the Motiv Sigma Core and Motiv Atomic Propulsion Pearl Reactive

Motiv built the Sigma Tour Pearl to be a readable, mid-arsenal benchmark. Specifically, the symmetric Sigma Core reads the lane smoothly and predictably, while the Atomic Propulsion pearl cover at a 5000-grit finish clears the fronts and continues to the pocket. As a result, it delivers a controllable, repeatable shape that tells you what the lane is doing on medium to medium-heavy oil. The full per-weight specifications are listed below.

A Readable Symmetric Core for a Mid-Arsenal Benchmark

At the heart of the Sigma Tour Pearl is the symmetric Sigma Core. At 15 lb it measures RG 2.47 and a .047 differential, numbers that produce a controllable motion with medium flare. The core reads the lane evenly and repeats the same shape shot after shot, exactly what a benchmark piece needs.

That readable, repeatable shape is what makes the Sigma a true mid-arsenal benchmark. As a symmetric core, it does not overreact or surprise you, it tells you what the lane is doing so you can make a confident move with the rest of your bag.

A Clean Pearl Cover for Readable Length

The Sigma Tour Pearl wraps that core in Motiv’s Atomic Propulsion Pearl Reactive coverstock at a 5000-grit finish. The pearl additive conserves energy through the front of the lane, so the ball clears the heads cleanly and saves its motion for a controllable move at the breakpoint.

That clean, readable length is what makes the Sigma Tour Pearl such a dependable benchmark. It gets down medium to medium-heavy oil and finishes with a smooth, controllable backend. Leave it at the 5000-grit box finish for the classic benchmark read, or adjust the surface at your pro shop to lean it earlier or longer.

Sigma Tour Pearl Specs

RG and differential vary by weight. Specifications provided by the manufacturer.

BowlersMart Tips: Where the Sigma Tour Pearl Fits in Your Motiv Arsenal

Shop With Confidence at BowlersMart

The Motiv Sigma Tour Pearl Bowling Ball ships free with no minimum purchase and is backed by our 60-day return policy. As an authorized Motiv dealer, every ball is genuine and covered by the full one-year Motiv warranty. Place your order before 2 PM EST and it ships the same day.

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