Columbia 300 Street Rally Bowling Ball

A Strong Asymmetric Pearl With a Quick, Continuous Breakpoint

About the Street Rally

The Columbia 300 Street Rally is a strong asymmetric pearl built for medium to heavy oil. It pairs the asymmetric Shifter Core with the Formula 1 Pearl coverstock, delivering clean length, a quick response at the breakpoint, and strong, continuous backend motion. It is the high-performance asymmetric of the Columbia 300 line.

The Street Rally brings together a strong asymmetric core and a clean pearl cover. The Shifter core builds a defined, energetic breakpoint, while the polished Formula 1 pearl cover conserves energy through the heads. The result is a ball that pushes cleanly through the fronts, responds quickly at the spot, and continues hard through the pins on heavier oil.

Understanding the Columbia 300 Shifter Core and Columbia 300 Formula 1 Pearl Reactive

Columbia 300 built the Street Rally as the line’s strong asymmetric pearl for medium to heavy oil. Specifically, the asymmetric Shifter Core posts a 2.478 RG, a .050 differential, and a .015 intermediate differential, numbers that produce a quick, defined breakpoint with strong continuation, while the polished Formula 1 Pearl cover reads late and continues hard. As a result, it gives you clean length with a quick, strong, continuous backend. The per-weight specifications are listed below.

A Strong Asymmetric Core for a Quick, Continuous Breakpoint

At the heart of the Street Rally is the asymmetric Shifter Core. At 15 lb it measures a 2.478 RG, a .050 differential, and a .015 intermediate differential, a combination that produces a quick, defined breakpoint with strong continuation. The asymmetric shape gives the Street Rally its responsive, angular move at the spot, while the lower RG gets it into a roll in time to drive through the pins.

Because the Shifter is an asymmetric core, layout has a strong influence on the reaction, so your pro shop can tune how quick or smooth the breakpoint plays. That flexibility, paired with the strong intermediate differential, is what makes the Street Rally the high-performance asymmetric of the Columbia 300 line.

A Polished Formula 1 Pearl for Length and Quick, Strong Continuation

The Street Rally wraps that core in Columbia 300’s Formula 1 Pearl Reactive coverstock, finished at 500, 1000, 1500 Siaair with factory compound and built on the Brunswick-family HK22 reactive platform. The pearl additive and polished surface let the ball conserve energy through the front of the lane, so it gets down cleanly and then responds quickly and continues hard off the friction.

That clean read paired with the strong asymmetric core is what gives the Street Rally its quick, continuous breakpoint on medium to heavy oil. Leave it polished for the quickest response and the most length, or take the surface down at your pro shop for an earlier, smoother read when the oil increases.

Street Rally Specs

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

BowlersMart Tips: Where the Street Rally Fits in Your Columbia 300 Arsenal

Shop With Confidence at BowlersMart

The Columbia 300 Street Rally Bowling Ball ships free with no minimum purchase and is backed by our 60-day return policy. As an authorized Columbia 300 dealer, every ball is genuine and covered by the full one-year Columbia 300 warranty. Place your order before 2 PM EST and it ships the same day.

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