Roto Grip RST X-2 | Bowling Ball Review | DON'T SLEEP ON ROTO GRIP!!

Roto Grip RST X-2 Review

While no longer in production, the RST X-2 remains a solid option on the used market for bowlers who need serious heavy oil performance with angular backend motion. The combination of the RST asymmetric core and eTrax Plus Pearl coverstock makes this a tournament-worthy piece when fresh backends are available.

By BowlingBallVideos.com Staff Tested Apr 22, 2026 7 videos analyzed 38 verified bowler reviews
8.6
Overall
Great Score
Weight
12-16 lbs
Coverstock
Pearl
Core
Asymmetric
Hook
High

Performance Analysis

Performance Analysis

Independent testing on a 44-foot titanium pattern revealed the RST X-2 to be a significantly more aggressive and angular ball than its predecessor, the RST X-1. Testers observed that while both balls share the same RST (Rotostar Tour) core, the shift from a hybrid to a pearl coverstock creates a noticeably longer skid phase and much sharper backend reaction. On fresh oil, the ball displayed dramatic hook potential—testers were able to strike from extreme inside angles (nearly 4-9 boards from the far left) where competing balls in the lineup would not recover. The X-2’s motion was characterized as “snappy” and “using all its energy at once,” which created a quick, continuous arc through the pins with strong pin carry, though this also meant it could over-hook on overly fresh conditions.

When compared directly to the UFO Alert—the previous step-down option in many bowlers’ arsenals—the X-2 demonstrated superior sharpness and quicker transitions while the UFO Alert maintained a rounder, more continuous shape that disperses energy over a longer distance. Testing also showed the X-2 sits between the UFO Alert and the original RST X-1 in the lineup, but leans toward the aggressive end of that spectrum. Testers found it less controllable on the fresh pattern and recommended reserving it for medium-to-long oil conditions (42+ feet) where its length and backend aggression become assets rather than liabilities. On broken-down or worn lanes, the pearl coverstock allowed the ball to get to the pocket with confidence while still delivering the sharp response bowlers expect from the RST core family.

Who Is This Ball For?

The RST X-2 is best suited for bowlers with lower tilt angles—those whose natural hand position causes the ball to read earlier in its path and struggle to generate enough hook in the backend. Bowlers with lower ball speeds will also benefit significantly, as the pearl coverstock allows the ball to travel further downlane with minimal friction before making its aggressive turn. The ball excels for players who need to open up their angles and attack from deep inside, making it particularly valuable for competitive bowlers managing long oil patterns or transitioning to drier backends later in tournaments.

Bowlers who already throw the RST X-1 and want a direct step-down option will find the X-2 ideally suited to their progression, since the shared core means predictable carry and consistent motion characteristics—only the cover aggression changes the equation. This ball rewards confidence in ball changes because bowlers know exactly what to expect. However, it is not recommended for high-tilt players or those with naturally strong hand speed on fresh oil, as its aggressive backend can result in over-hooks and unpredictable carry. The X-2 belongs in the bags of players who prioritize backend motion and need help storing energy until the mid-lane, then releasing it sharply downlane.

Hook Potential
8.0
Length Through Heads
7.0
Back-End Continuity
8.0
Pin Action
8.0
Versatility
6.0
Value for Money
7.0

The Pros

  • Strong asymmetric core provides excellent angular motion
  • eTrax Plus Pearl coverstock offers good length with strong backend reaction
  • High flare potential creates impressive pin carry

The Cons

  • Limited versatility on lighter oil conditions
  • Discontinued status makes finding consistent drilling layouts challenging

Who Is This Ball For?

While no longer in production, the RST X-2 remains a solid option on the used market for bowlers who need serious heavy oil performance with angular backend motion. The combination of the RST asymmetric core and eTrax Plus Pearl coverstock makes this a tournament-worthy piece when fresh backends are available.

Heavy oil tournament bowlersPlayers seeking strong angular backend motionBowlers comfortable with asymmetric ball reactions

Technical Specifications

Core Details (Roto Grip RST Core Core)
RG (15 lbs) 2.53
Differential 0.053
Int. Differential 0.016
Coverstock Roto Grip eTrax Plus Pearl Reactive
Core Type Asymmetric
Factory Finish 1500 Grit Polish
Color Purple

How It Compares

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Verified Bowler Reviews (59 reviews, 5.0/5 avg)

5.0out of 5

59 verified purchase reviews

100% of bowlers recommend this ball

Write a Review

Bowlers Say

Bowlers praise the RST X-2 as an excellent asymmetric pearl with exceptional length through the fronts and strong, controllable backend motion. The eTrax plus pearl coverstock delivers clean reads while the RST core provides angular but predictable entry angle, making it ideal for medium-heavy oil conditions and transition play.

AI summary of 59 verified purchase reviews

Bowlers frequently mention:

Adam Chase Aug 11, 2021

Layout 55 x 5 x 45 The New RST X2 is the pearl counterpart to the popular RST X1. The X2 delivers exactly what you expect. Cleaner in the front with a more angular backend than the X1. Not only does this ball look great going down the lane, it also performs great on the lanes. This is really good ball for the transition after the X1 or a ball down from a UFO or even the UFO Alert. The X2 delivers stronger midlane motion while providing that great angular backend. On a THS, this ball can be great on the fresh if the pattern has some extra friction or as a game 2 or game 3 ball depending on your style. On Sport Patterns for me, this ball handles the higher volumes of oil on medium to longer patterns. The X2 is slightly stronger midlane and more continuous motion than the Nuclear Cell. Adam Chase Storm Staff

United States

Storm Andrew Aug 15, 2021

After the success of the RST X1 it was natural to compliment it with the pearl RST X2. The RST X2 is cleaner and more angular than the original RST. We see plenty of shape down lane with the pearl cover. Additionally, the X2 is more overall than the UC2. The X2 will play well on a variety of conditions from sport to house. If you were a fan of the Astro Physix this will be comprable although a tad stronger. As the lanes transition and begin to hook early we have 2 new options with the Hustles; the solid and the pearl. If the back ends are crisp the solid will come into play to slow the ball down and control the back end. When a more skid/flip reaction is necessary the pearl could be utilized. The high rg low differential on these balls will provide plenty of control when there is a ton of overall hook on the lane front to back.

United States

Aug 17, 2021

Roto Grips newest HP4 Clean Asymmetric option is the brand new RST X-2! This features the eTrax Pearl Reactive Coverstock wrapped around the RST Core (Roto Star Tour Core)! This is the Pearl version of the RST X-1 on the heavier lane conditions! Mine is drilled pin over my bridge with the Mass Bias close to my thumb! This ball motion wise reminds me of a Hy-Road Pearl just asymmetric with that clean motion through the lane with a good angle down lane but not to much down lane! Recently had success with this RST X-2 right after my Zen Master and UFO was to early this ball got through the early friction and created tremendous entry angle with good hitting power! Head over to Dave’s World Of Bowling on 8/27/21 and get yours for a ball with tremendous down lane motion for heavier lane conditions!

United States

Mancstorm Aug 23, 2021

Great compliment to the X1. Perfectly fits right behind it. Overall stronger and a little sooner then my UC2. Reminds me a lot of one of my all time favorites the Astro Physix.

United States

Casey Murphy Aug 25, 2021

Orientation: Right Handed Rev Rate: 400 RPM Speed: 16-17 MPH PAP: 4 ½ over and ½ up Location: Enterprise Park Lanes, Springfield MO Pattern: High Volume THS VLS Layout: Layout 2: 4 ½ x 4 x 4 1/8 (pin below bridge) My X1 created a motion I’ve never seen before. I couldn’t throw it a ton though because it was SUPER strong. My X2 is clean and creates that same reaction on much less volume. That means I can use it a TON more than I was able to use the X1. My X2 is pin down and it creates a LOT of backend motion. I can throw it to the friction for days and it comes off the spot easily and strong. It’s that same X1 motion just 5 feet further down the lane, which makes it much more usable.

United States

Showing 1–5 of 38 verified reviews

Frequently Asked Questions

What oil condition is the Roto Grip RST X-2 best for?
The Roto Grip RST X-2 is designed for heavy oil conditions. It features a reactive pearl coverstock with a 1500 Grit Polish finish, which gives it the surface traction needed to grip through heavier oil patterns.
Is the Roto Grip RST X-2 good for beginners?
The Roto Grip RST X-2 is a high-performance ball with high hook potential, which may be difficult for beginners to control. It's better suited for intermediate to advanced bowlers who have developed a consistent release. Beginners should consider an entry-level ball like the Brunswick Rhino or Roto Grip Hustle series first.
What is the RG and differential of the Roto Grip RST X-2?
The Roto Grip RST X-2 has an RG of 2.53 and a differential of 0.053, with an intermediate differential of 0.016. The higher RG means it stores energy longer, pushing further down the lane before transitioning. The high differential creates strong flare potential and aggressive ball motion.
How much does the Roto Grip RST X-2 cost?
The Roto Grip RST X-2 is priced at varies by retailer. This is a competitive price point for a ball in its performance category. You can find it at BowlersMart.com with free shipping and 60-day returns.
What type of bowler should use the Roto Grip RST X-2?
The Roto Grip RST X-2 is best suited for bowlers who want maximum flare potential and angular ball motion. With its reactive pearl coverstock on heavy conditions, it works well for medium to high rev rate players who need a ball that can handle oil and still make a strong move on the backend.

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