This ball is SICK!  I am so happy with this release! This ball is super versatile.  Whatever I do with my hand, this ball responds to.  I can get right and get up the back of it or I can get in and get around it and it will boom down lane.  My first 6 games with this ball was 804 and 802.
247, 257, 300, 289, 256, 257.

Along with the versatility there is also its hitting power.  This ball goes through the pins SO well, destroying racks.

The only downfall of this ball is the color.  I personally like the darker colored balls, but some may think that this ball doesn’t have the shelf appeal as the other Asymetrical ball with the same release date, Proton Physix.

Pick yours up on Black Friday!!

Layouts: Pin Buffer- 5x4.5x1
Dual Angle- 60x4.5x15

Other balls in the league bag:
Rubicon-5x4.5x1
AstroPhysix-4x5x2
Hyroad Pearl-5x4.25x4.5

The RST X-1 features the nano based MicroTrax hybrid cover formula and new dynamic and high torque asymmetric RST or Roto Star Tour core.  MicroTrax is very similar to Storm’s NRG coverstock, though is a little stronger to my knowledge, and the 3000 grit hybrid version instantly reminds me of the PhysiX.  The RST core comes in at a 2.53 RG which is medium and fairly high for an asymmetric ball, an .053 differential and an .016 split or intermediate differential.  The medium RG is going to help the ball scoot through the fronts a little easier while the diff and split create plenty of torque and motion down lane.  The overall package reads like a slightly smoother PhysiX or more usable Halo Vision to me, all of which is good news.  The PhysiX could offer a little too much boom down lane sometimes and the Vision was strong enough to take it out of play on all but the heaviest of conditions, while the RST still provides plenty of hook to tackle heavier stuff but also play more comfortably than I expected on a house shot.  With 1 being the lowest and 10 being the highest, I rate the RST a 9 for hook, a 5 for length, and a 5 for backend strength. 

Roto Grip's RST X-1 brings a brand-new Roto Star Tour core design plus an updated and familiar cover... and results in what might be the surprise of 2020 for me. The 3000-grit MicroTrax Hybrid coverstock is not at all hurting for traction, but that new medium-RG asymmetric core provides a ton of midlane punch while also continuing downlane and through the pins better than any other asym core that I've ever thrown. I find it hard to put this ball down... and I'm guessing you will too!

The Stats ….
Color   Black / Dark Forest / Forest Pearl
Coverstock   MicroTraxâ„¢ Hybrid Reactive
Core   RSTâ„¢ Core = Roto Star Tourâ„¢ (Asymmetrical)
RG   2.53
Differential   0.053
Intermediate Diff   0.016
Factory finish   3000 grit Abralon
BOWLER STYLE: RH - Power Stroker Rev Rate: 320 Ball Speed: 15-16 PAP: 4 7/8 right 3/8 up.
PAP : 4 ⅞ - ⅜ UP

My Thoughts…. The RST-X1 is the newest asymmetric ball in the Roto Grip line. When bigger balls like a UFO, Nuclear Cell, or Proton Phisix on the Storm side is too much but balls like the IDOL’s are not enough the RST X-1 checks that box. When the RST X-1 runs out of room on the approach the Rubicon is the ideal go-to ball to pick up when the RST X-1 is burning up too much energy.

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Roto Grip RST-X1 –layout: 70 x 1 ½ x 30
Tech specs: Microtrax hybrid – RST core – 3000ab finish
Ball review: When layout out this ball I took into account how much more rev dominate I have become in the past 2 years. So with that we drilled a shorter pin to pap for me to help calm the ball down overall. Anything 3 ½ to 5 ½ pin to pap is way too strong for me for asymmetric cores since my accident over 2 years ago. During first night of league I found it to be really super smooth even with the 30 degree back angle. So I then practiced with it and did some videotaping of the reaction. I found the ball to be a tick strong then my Idol and Rubicon but not as strong as the UFO that has a little bit stronger pin to pap – 2in pin to pap compare to the RST-X1 with the 1 ½ in pin to pap. The new RST core is going to be a BIG hit because of the weight of the block is at the north and south points of the core, where other AYSs have a majority of their mass in more to the middle of the core, the RST will tumble more and provide even more length down lane. So for me, I will start on the fresh with the RST-X1, then when the back ends get tighter, I will set up to the UFO or Proton Physix.

Bowler Name: Wes Dye
Style: RH Thumb-in bowler
Rev Rate: 425-450 RPM
Ball Speed: 18mph off the hand, 16.5 mph @ camera (where most speed data in centers come from. 
Axis Rotation: 40-60 degrees on average
Axis Tilt: 10 degrees

Ball: Roto-Grip RST X1
Layout: 4.5x4x2.25
Surface Prep: Box

I am always cautiously excited about new technology in bowling equipment.  The cover on this one is a hybrid microtrax, which we’ve seen variations of before. What impresses me most about this cover formula is not only the separation of flare rings, but how wide each flare ring is.  This cover seems to make more contact with the lanes than any cover I’ve thrown to date. The core, however, is the brand-new roto star tour.  The RG in a 15lb is a bit higher than most big asyms, and the intermediate diff or PSA is a bit lower than most. I was thrilled to see this, as my speed to rev ratio coupled with lower tilt usually makes bigger asyms harder to throw on house shots.  I usually see them burn way too much energy in the front and midlane, but that was NOT the case with the RST X1.  While I did have to move a zone left of where I normally play our house shot, this ball let me do that with ease and most importantly it had CONTINUATION. With the strength of this ball, I was able to open my angles earlier in the night and take advantage of the easier shot sooner.
 
The shape this ball creates is unique because it is moderately strong, but in all 3 major parts of the lane. Often, we have strong balls in either the fronts (first 20 feet), mids (second 20 feet) or back (third 20 feet).  Take the UFO for example; for me the UFO is INCREDIBLY strong in the fronts and mids but doesn’t create a lot of back end shape.  This is great for heavier/flatter conditions where control is needed.  The UFO slows down and hooks so fast, it almost makes the lane feel slightly uphill. It is a true HEAVY oil ball.  The RST X1 on the other hand is just a wonderful blend throughout the lane.  It doesn’t glide through the fronts, nor does it slow way down.  In the middle part of the lane, you can see the white logos doing some work and rolling over, but the ball isn’t done working when it gets to 40 feet. The backend is a strong bending motion, not sudden.  I have fallen in LOVE with this ball.
 
I would call it an asymmetrical benchmark reaction, great for heavier lane conditions or those with a slightly speed dominant game. This ball isn’t going to handle the floods out there like the Proton PhysiX or UFO, but anything slightly less and I think the RST X1 will impress. 

LANE CONDITION
Length: 40
Volume: Medium
Type (THS, Sport Pattern etc): THS

COMMENTS
The RST-X1 is the newest asymmetric ball in the Roto Grip line. For me it is very similar to the Rubicon that came out just a few months ago. When using both balls on the same line at a tournament a couple weeks ago, they complimented each other well and gave me a slightly different look going through the pins. The RST is slightly earlier and slower then the Rubicon. I immediately switched to the Rubicon when the RST was burning up too much energy, and it was the perfect 1-2 combo to start the tournament. I am also very excited to try the RST-X1 with polish, because I think that will make this ball more versatile and allow me to move further left and have the ball store more energy!

SOCIAL MEDIA
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BOWLER STATS
Trevor Roberts
2016 PBA Southern Regional Rookie Of The Year
Storm / Roto Grip Professional Staff
Turbo 2N1 Grips Staff Member
Right Handed
Rev Rate: 440
Speed: 17
PAP: 5 1/2 up 13/16