Roto Grip Perfect Gem Bowling Ball

Roto Grip Perfect Gem 5x4x2. Asymmetrical Solid featuring the E-R1 cover with AI core. A lot of bowlers loved the original Gem. Unfortunately my game never really got along with the original because of how early it was and because of my low rotation it never had enough energy once it got to the pins. Perfect Gem has a slightly higher diff allowing it to get through the fronts a little easier and have more pop down lane which allows me to stay more forward with my release without having to worry about the ball bailing. This one is definitely a bit more responsive than the original Gem. I was also pleasantly surprised at how well it continued through the pins for such a strong cover. I can see myself using this on longer and heavier patterns when I need a strong cover but maybe have to cover a little more of the lane. Get yours today at your local Storm VIP Pro Shop #SquadRG

The Perfect GEM by Roto Grip is here! The layout is 5 x 4 x 2 (50 x 5 x 30 using the dual angle layout) This is my first ever GEM from the most popular series. This ball has the new E-R1 coverstock, which makes the ball clear the front part of the lane and provides that EXTREME response downlane. The original GEM was slow and chuggy, so I definitely see more length and backend from this Perfect GEM. Adding the A.I. core with this cover, gives it more punch through the pins. This ball will be great for me on heavier oil conditions and longer oil pattern as well. I will be taking this to a few tournaments this season! If you are looking for that big ball, but want more backend and drive through the pins, the Perfect GEM will be the one for you!

Coverstock: E-R1 Solid Reactive Weight Block: Gem + A.I. Core RG: 2.49 RG. Diff.: 0.057 Finish: 2000-Grit Abralon Roto Grip’s new Perfect Gem is a Solid Asymmetrical piece that is good for Medium-Heavy Volume patterns. PAP is 5 5/16 R 1 3/16 Up. Rev Rate: 400. Speed: 16.5. I drilled this piece with the Pin up between the fingers, CG kicked out 1” from the palm, and 1” Left of the Mass Bias. 5 x 4 x 2 ½. I threw this piece on a Fresh 38’ house pattern. Out of Box ball motion started in the mids with a strong backend reaction through the pins. I couldn’t throw this piece much on the house pattern cause it was a little too dry. I compared this to Wicked Gremlin. Wicked Gremlin is cleaner through the fronts and smoother on the backend than the Perfect Gem. This piece will be good for speed dominant and low rev rate bowlers.. Check Out my Ball motion Video on my Facebook/YouTube Page: https://www.facebook.com/reel/1318187173602229

Storm Products has brought back one of the staples in the Roto Grip line, the Gem series. In its previous incarnation, there was the original Gem (solid), the Exotic Gem (pearl) and the Magic Gem (hybrid). Those balls were big asymmetricals. The covers were all solid/pearl blends of MicroTrax which had nano particles for increased “snow tire” type traction. And those originals all featured the Defiant LRG core. The new Perfect Gem has all new components from its namesake. The cover is the brand new E-R1 which stands for extreme response, but it is nano free. The goal is to still provide a high degree of traction, but without nano particles, so it should clear the fronts easier than its predecessors and provide the extreme response down lane and through the pins. The Perfect Gem features the all new Gem + A.I. core which takes the original core, but recalibrates the internal density and fuses it with our Amplified Inertia (A.I.) Technology. Typically, adding A.I. to an existing core lowers the RG a little. But since the densities have been modified as well, the RG is actually a little higher in the Perfect Gem at 2.49 in the 15#. It also has a bigger differential at 0.057 with a PSA dif of 0.017. What all this means is the Perfect Gem should be pretty early, with a big flare potential so it will be at the top of your bag with the Ion Max, the Viking Conquest, but it will be a little cleaner and therefore be a little more responsive with a bigger back end reaction. I recently bowled the Northwest and West Elite Regionals on the 48’ pattern. I didn’t have this at the first Northwest event, but a lot of guys were throwing it. I drilled mine with the specific idea to use it on the West event. So I put the pin 5 ¾ from my PAP because I wanted it to stay online for the longer pattern since I would be playing so close to the head pin. I wanted it to rev up and read the midlane, so I put the PSA 2” from my PAP. And I used a 2” pin buffer so it would have a pretty quick hook window since it wouldn’t have a lot of time to make a smooth change of direction on the longer pattern. I liked what it gave me starting game 1. I felt like the cover wouldn’t over shoot and the core would rev up so it would read the midlane. It just was a little too strong on the back end given how close my breakpoint was to the pocket. Also, that pattern is really low scoring, so nothing was going to create a bunch of miss room, but it at least made me feel like I had a ball motion that gave me a chance. Throwing it on a house pattern, I confirmed that the Perfect Gem is similar to the big asyms like Ion Max and Viking Conquest. It is a little cleaner, and has more back end motion. So f you are looking for a big ball for the top of your bag and one that is a little more versatile because it has more responsiveness down lane, the Perfect Gem could be the perfect choice for you.

Roto Grip Perfect Gem — E-R1 Solid Reactive | GEM A.I. Core | RG 2.49 | Diff 0.057 | Box Finish 2000 Grit The Perfect Gem has been a great match for my game with my high rev rate and medium-to-high ball speed. It gives me the strong traction I want in heavier oil, with a strong and predictable midlane read without feeling like it burns up too early. Even with the 2000-grit finish, I still get plenty of energy downlane and a strong continuation through the pins. I really like that I can move inside as the lanes transition without the ball losing its shape. Compared to the Original Gem, I feel like the Perfect Gem gives me a little more length and continuation while still having plenty of overall strength. It doesn't feel overly aggressive off the breakpoint, which makes it easier for me to control with my higher rev rate. When I need a ball that can handle heavier conditions, dig through the oil, and still have enough energy to drive through the pins, the Perfect Gem gives me a lot of confidence and is definitely a ball I want in my bag.

Ball Specs: Roto Grip Perfect Gem ER-1 Solid Reactive Cover 2000 Abralon Sanded Asymmetric Core Layout 4 x 5 with 1/2” Pin Buffer Bowler Specs: Right Hand. PAP 5” Over 1/2 up Rev Rate 300. Tilt 20. Rotation 50. Speed at release 17 Review: The new Roto Grip Perfect Gem provides a bit more length than the original Gem. The changes made to the Perfect Gem allow it to provide a ball that keeps coming on the back part of the lane where the original would sometimes roll out. Both solid Gems hook a lot, but I feel I will be able to use the newest on more occasions one if there is enough oil. This ball has great colors and when polished looks great. Polish also gives the ball more length and pop on the back of the lane. The Storm family has some very good high hook potential dull balls out right now. I would choose this one for a big, controlled hook with a good move at the break point. The Viking Conquest for more back-end motion and the alpha for early and forward roll. The Perfect Gem was well received at our recent Match Maker ball Demo and showed its hook potential. Summary: This is a very strong ball from Roto Grip. The Perfect Gem provides a little more length than the original. The Perfect Gem will be a good choice for oily conditions. Glenn Wendel Storm Pro Shop Staff gwendel@comcast.net www.stormbowling.com Video Link: https://www.youtube.com/shorts/PGWdV5y9Ax4

The Perfect GEM features the same GEM core found in the previous versions but now has the AI outer core. The Perfect GEM also features some new tires, E-R1 Solid. This combination produces a ball with a lot more overall shape than the OG but still creates plenty of friction. The Perfect GEM is going to be a great option for me on fresh higher ratio patterns or after balls like the ION Max and Alpha start seeing the front part of the lane too quickly. The Perfect GEM is now available from any Storm VIP Pro Shop! Review Video: https://youtu.be/zgMNjHv4iAw?si=NXB8ISog0guD3UFs

The Perfect Gem is the newest addition to the Roto Grip Line. This new asymmetrical solid features the GEM core (found in the fan favorite original Gem), this time, upgraded with AI technology. The weight block is topped with the ER-1 Solid Reactive Cover Stock. The specification of the Perfect Gem is designed to produce more hook potential, more traction, and more versatility. Ball layout: 70 x 5 3/8 x 40. I tested the ball at my home centers 42ft league pattern. The first thing that came to my mind after the first shot was… “wow, this ball is strong!” Quite possibly the strongest asymmetrical solid I’ve ever thrown. The hook potential in this ball blends so well in the oil, where it picks up easily in the mid lane, resulting in a smooth and controllable backend motion through the pins. While the Alpha Crux and Wicked Gremlin have strong hook potential, the Perfect Gem is just the icing on the cake when it comes to versatility. This ball would work so well when contesting on heavy lane conditions. I also feel as a bonus, like the original Gem, bowlers can also benefit with various surface adjustments for the Perfect Gem to give them more length and control with pleasing results. More strength, more versatility, simply… perfect! If you were a fan of the original Gem or looking to upgrade your arsenal with a big core asymmetrical solid, you’re going to love this beast! Drill one up today at your local Storm VIP Pro Shop! The Perfect Gem is just… perfect!!

Roto Grip Perfect Gem Cover: E-R1™ Solid Reactive – 2,000 Grit Core: GEM™ + A.I. Core (Asymmetrical) Color: Pink/Rose/Oynx Review: The Gem is back baby! This series has been a home run for that first out of bag bowling ball and not to mention the awesome shelf appeal! If you love those bowling balls that like to move this will not disappoint. The biggest difference in this new version is a slightly more dense core as well as a cleaner look through the front part of the lane. We feel compared to the original Gem this ball is less forward rolling and a little more continuous through the pins. Our style: tweener, 350-375 revs, 16.5mph, layout of choice is 5x4x2 (pin is above bridge). We really like this ball for fresh tournament and house patterns. We often find ourselves beginning with this piece in game 1 and transitioning to something a little smoother down lane in the later part of game 2 and game 3. This ball may not be as versatile as some of the other SPI asym bowling balls but it must not be overlooked for its power on the fresh. It really is a true Gem. This may be more of a niche piece but it is definitely worth checking out at a local matchmaker to see if it fills that gap in your arsenal. Kyle, Joel, & Dean Johnson Roto Grip Pro Shop Staff Members joel@parklanes.net kyle@parklanes.net dean@parklanes.net www.rotogrip.com #StormNation #GoGlobal #SquadRG

The Perfect Gem might be the most versatile Gem that they have made. Even though the ball doesn’t pick up as early as the original Gem, it is still strong. When the lanes break down I feel like the original Gem didn’t have as much forgiveness when I moved a little left. This ball has a bit more length with a sharper backend motion. It allowed me to play a little more inside and the ball just continued to plow through the pins.