Roto Grip Gem Bowling Ball

Ball Specs: Roto Grip Gem Coverstock: 2000-grit MicroTrax™ Solid Reactive Weight Block: Defiant™ LRG Core (Asymmetrical) Color: Citrine/Ruby/Amethyst Review: The Gem is a very vibrant, very strong, very early rolling ball. This ball reminds us of the Reality and the Proton Physix. This ball will be a monster on a fresh house shot. It seems to recover very well if you push the ball to the right so we really can move our feet left and open up the lanes. This ball is also a gem when it comes to continuous motion, and is very noticeable right off the bat. If you are looking for a first out of the bag asymmetrical ball that is very strong and very continuous look no further. Kyle, Joel, & Dean Johnson Roto Grip Pro Shop Staffers joel@parklanes.net kyle@parklanes.net dean@frontierfuncenter.net www.RotoGrip.com #SquadRG

Roto Grip GEM Cover: MicroTrax Solid Core: Modified Defiant Core Factory Finish: 2000=grit My Finish: 4K FAST Layout: 55 x 2 x 55 Once I heard that the Defiant core was coming back, I was gitty as a kid going to his first tournament. Schlem and the crew at SPI change the core material a little bit to bring it up to today’s game. Matching the MicroTrax cover to this updated core has added some smiles back onto my face and more strikes in my game. First thing that POPS out is the awesome color choices. You KNOW when the GEM goes do the lane and it really does turn heads on the lane and off the lane. The GEM replaced for me the Roto Grip UFO with more overall continuous motion and also not as early in the front part of the pattern where the majority of the conditioner is located. The GEM moves so well in the front that the energy it stores is the best I have seen in some time for a solid reactive in overall carry and strength going into the pocket. The GEM works well on all lane panels, including wood. I cannot wait to use this, Storm Nova, Hyped Pearl and Roto Grip Helios at Nationals in late June.

Roto Grip's new high performance bowling ball the new Gem! This ball features the Micro Trax Solid Reactive Coverstock wrapped around the Defiant LRG Core. If you are looking for a ball to tackle the heavier oil conditions, look no further, this ball just flat out hooks. It starts picking up a roll very early like most heavy oil balls, but where this ball stands out, the recovery on the back end. Most hook balls for me, use so much energy up front, there isn't much movement on the backend, leaving a lot of corner pins. This ball still has enough energy on the end that it snaps them out. It also takes surface adjustments very well, as I shined it up just see how it would react, I was not disappointed. With shine, it cleared the heads very well, picked up in the mid-lane very well, and had plenty of backend. What impressed me most while shiny, was when I missed to the dry early, it did not jump off the spot, but rather a smoother reaction to the pocket. Don't miss out on one of the biggest hooks balls on the market right now in the Roto Grip Gem!

Gem • Performance Line • HP4 Core •Defiant LRG Core Coverstock • MicroTrax (Micro Nanoparticle Traction) Solid Reactive Finish • 2000 Grit Abralon Weight • 15 lbs. RG •2.47 Differential • .053 Int. Diff • .016 Layout • 4 x 5 x 2 1/2 Tester PAP • 5" R, 5/8" D Tester Axis Tilt • 11° Tester Rev Rate • 325 Test Pattern • 42' THS (Typical House Shot) • Modified, Kegel Stone Street There is truth to the statement, "Sometimes evolution can spark new life into technology." And with the release of the Gem, Roto Grip has sparked a brilliant new dimension into their HP4 line. With the Defiant LRG Core and MicroTrax Solid Cover combination, the Gem delivers a powerful, cutting-edge new look to your ball motion. So let's break it down on a THS! The heart of the Gem is the Defiant LRG Core. And I loved how this core reacted from the first shot! The Defiant LRG Core rev's smoothly and earlier like you would see in a strong symmetrical core. However, when it makes the turn and stands up, it enters the roll phase with a rolling thunder of power! So if you are a straighter, low rev player like me, this core is ideal for your game! And what I found most appealing about the Defiant LRG was although, being it is a low RG core, it flared (hooked) more than expected. Yet it also delivered an impressively powerful continuation through the pins! So down and in, players will love the Defiant LRG's potential to dispense those frustrating ten pins even without having six degrees of entry angle! The MicroTrax Solid reactive cover is well-suited for straighter and down and in players. And being the MicroTrax is a strong solid cover, you can count on its teeth to bite into heavy oil! Yet, although it is an aggressive cover, I found the MicroTrax Solid didn't overreact to friction. I saw a smooth transition coming off the pattern on fresh oil playing the nine board. Then as the THS pattern began to break down, I liked how this MicroTrax cover blended the wet/dry conditions that developed. And as a straighter player, I enjoyed moving my target in decisively without worrying if I had enough hand to make the Gem turn off the pattern! The MicroTrax cover gave me the confidence to stand left while still retaining the Gem's intense hitting power. In closing, I was impressed with this new release from Roto Grip! The Gem performs brilliantly for down and in players and those with a challenged rev rate! And with the Defiant LRG's asymmetrical core and the MicroTrax Solid reactive cover, the Gem will be a powerful tool to add to your arsenal. So have your local pro shop operator drill yours up and tweak the Gem's surface today, then see for yourself why the Gem is the jewel in your arsenal! Rick Klimowicz Storm Products Pro Shop Staff Roll the Ball Pro Shop Penndel, PA

Roto Grip’s new high performance bowling ball the new Gem! This ball features the Micro Trax Solid Reactive Coverstock wrapped around the Defiant LRG Core! This ball will give you a great option for the heavier lane conditions! My Gem I have drilled is Pin over my Bridge which is about 4 1/2 inches away from my PAP which is my standard layout! I absolutely love this ball because of how versatile it is! I’ve thrown this on league patterns and had big scores as well as thrown this ball on shorter/medium patterns after urethane goes down the lane! The Gem reads the body of the lane with a nice strong predictable motion on the backend!! If your looking for a ball that hooks but also looks sweet this Gem will be your answer!!

Roto Grip Gem Review Rev Rate: 375 Ball Speed: 15-16 mph PAP: 5 inches over, 1/2 inch up Layout: 55x5x65 (I have attached a link to the Gem Ball Review that I did on YouTube. Feel free to check it out!) https://youtu.be/EwlJDyjYFps The Roto Grip Gem is a tank on the front lines of driving through oily league and tournament conditions. The Defiant LRG core gives it a faster revving asymmetrical look with its 2.47 RG, while the MicroTrax solid reactive coverstock gives it that extra aggressiveness to handle any medium to heavy oil conditions. This ball will have no problems getting uphill. The Gem will “dazzle” for you!

Ball Specs: Roto Grip Gem Coverstock: 2000-grit MicroTrax™ Solid Reactive Weight Block: Defiant™ LRG Core (Asymmetrical) Color: Citrine/Ruby/Amethyst Review: I was excited to hear about this ball. When I saw it would have the Defiant core in the ball, I was really excited. The Defiant line was one of my favorite lines of all time. When I threw the ball I quickly realize that the Gem was going to be an upgraded version of the original Defiant. Much stronger and forgiving if you pushed the ball out. I plan on doing a little more experimenting with surface but out of box this thing cuts through just about any amount of oil that I have run into. I would recommend this ball to just about anyone of any skill level. Do not let this ball go by the wayside make sure you pick yours up soon! Will Tefft Roto Grip Staff Member will@parklanes.net www.rotogrip.com #SquadRG

great ball needs head and mid lane oil

The newest addition to the HP4 line in the all new GEM. The GEM features the Defiant™ LRG Core - (the lowest RG asymmetrical core Roto Grip has ever created.). The LRG Core is wrapped with the most aggressive solid coverstock we make known as MicroTrax™ Solid Reactive. This lethal combination makes bowling on high volume patterns an easy task. I have been pleasantly surprised with this ball, for how strong the ball is the ball is still able to retain energy through the pins. If you are looking for a strong continuous roll, look no further than the GEM. Go out and get yours today!

The Roto Grip Gem features the extremely low RG Defiant LRG Core wrapped in the MicroTrax Solid Reactive coverstock. The RG at 15lbs is 2.47 with a differential of .053 and an intermediate differential of .016. This ball is all sorts of strong…it is strong in the front, the mid, and still has some left for the backend part of the lane, not to mention the strong shelf appeal of this beauty. This ball is great for bowlers who are speed dominant or low rev players. The low RG core gets this ball rolling as soon as it hits the lane, so oil in the front part of the lane is a must for the Gem. For me the box finish of 2000 grit abralon was too much. I had to get some games on this ball just to tame it down somewhat so I could really use it at my home center. For me this ball is different than all the current SPI brand asymmetric balls. The Gem is much more of a heavy rolling ball with a very smooth backend. It is something that I will use on longer and flatter conditions where I need to keep my angles closed. If you are looking for a ball that handles the oil like no other, look no further than the Roto Grip Gem.