win a ball from

Author Topic: TNT Infused  (Read 391 times)


  • Administrator
  • Hero Member
  • *****
  • Posts: 886
TNT Infused
« on: November 22, 2023, 09:13:58 AM »
Ball NPS Score: Not Available has the largest selection of bowling balls
Click here to shop.

Roto Grip created the TNT Infused bowling ball with a focus on achieving both length and forgiveness. This ball is a benchmark in the Roto Grip line, featuring the same Torpex Core as its predecessor but wrapped in the eTrax PLUS Hybrid coverstock, a blend of two-parts pearl and one-part solid.The placement of the TORQUE SPHERE just above the core's inner equator results in the lowest RG symmetrical core in Roto Grip history. This design also increases the differential, leading to more overall ball motion and reduced pin deflection. In simple terms, it delivers explosive power and excellent pin carry, regardless of your rev rate.Our eTrax PLUS Hybrid Coverstock combines the best of pearl and solid materials, resulting in the right balance of control and explosiveness. This ball is engineered to deliver impressive performance and consistently knock down pins.With the Torpex Core and TORQUE SPHERE Technology, the goal was to create a coverstock that not only complements the TNT but also enhances the entire Roto Grip product line. The aim was for explosive performance, and this was achieved by crafting this 2-part pearl and 1-part solid concoction from eTrax PLUS material.

Color: Glow Orange/Copper/Plum
All colors do vary somewhat from the picture shown
Core: Torpex
Coverstock: eTrax PLUS Hybrid Reactive
Hook Potential: High
Finish: Reacta Gloss
RG: 2.47 (for 15# ball)
Differential: 0.052 (for 15# ball)
Recommended Lane Condition: Medium Oil
Reaction: Small Arc



  • Full Member
  • ***
  • Posts: 180
Roto Grip TNT Infused by Casey Murphy
« Reply #1 on: November 22, 2023, 11:51:50 AM »
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 1:  5 x 4 x 2 ½  (pin above bridge)
Layout 2:  4 ½ x 4 x 4 1/8 (pin below bridge)

The TNT Infused HOOOOKS.  I liked the TNT quite a bit when it came out but it does get slow at times.  The Infused comes off the spot HARD.  It is a lot of ball.  Where the TNT gets off the spot slow and continuous and lets you stay closer to the friction, the Infused just goes.  I HAVE to open the lane up to keep this ball online, but the solid part of the cover insures that it reads the front part of the lane, so oil is not a problem.  Being a high performance hybrid allows this ball to be used on all sorts of oil volumes and patterns because it tries to get through the fronts more than a solid but it also jerks, but not as much as a pearl!  Love some high performance hybrids!

Ben Lapointe

  • Jr. Member
  • **
  • Posts: 9
Re: TNT Infused
« Reply #2 on: November 23, 2023, 07:36:50 AM »
Ben Lapointe
5.25 x 4 x 3
1 1/4'' up and 4 7/8 over

The TNT Infused is Roto Grips newest piece in the HP3 line. This ball provides excellent mid lane read with its big core found in the original TNT as well. The pearl cover on this piece makes it sharp enough on the back end to get through the pins with ease, but does not want to go through with too much angle and 9 pin. I find this ball blends out wet/dry or over under really well. I find this ball very useful on sport due to its slower ball motion, making it more useful on low volume fresh sport patterns. Bowl up a Storm!!

Luke Rosdahl

  • Hero Member
  • *****
  • Posts: 1093
TNT Infused Review by Luke Rosdahl
« Reply #3 on: November 24, 2023, 11:38:28 AM »
The TNT Infused is a new symmetric ball in Roto Grip’s HP3 line.  It features the eTrax plus hybrid cover, which is a clean and responsive cover that we’ve seen before on the RST X-2 in pearl form, and on the TNT as a solid.  The core is the relatively new Torpex core which comes in at a low 2.47 RG and a .052 differential in 15 pounds.  The Infused feels like a longer and sharper version of the TNT, but it’s remarkable how much that improves the quality of the ball reaction.  I’ve used the Infused on several different conditions with a couple different surfaces.  The factory gloss is too inconsistent and sensitive for me, so I resurfaced it down to 1000 on a resurfacing machine, then finished it lightly with Storm’s Step 2 compound.  The result was a strong rolling, but clean, firm, and slightly forward arc. 

The TNT was known for being surprisingly early and strong despite the cleaner cover formula, and unfortunately the front to back shape was too front heavy which made it lazy and apathetic down lane.  The Infused adjusts that shape, giving it a lot more balance and resulting in a perfect balance of core and cover.  The heavy rolling and early core gives a lot of stability to the reaction shape, while the cleaner and sharper cover gets the ball further down the lane and adds punch.  This makes the Infused a surprisingly effective and versatile ball that reminds me a lot of the original Zen, just cleaner and sharper.  Like the TNT, the reaction shape wants to be slightly forward, but the cleaner cover allows the bowler to control the shape a little better because you can get around it more without it digging in so early or being flat like the TNT was.  It fits well for a variety of bowler styles on most league conditions, and will be a great option for getting into transition on more difficult patterns. 
Storm Amateur Staff
Turbo Regional Staff
YouTube Channel:
Twitter: @LukeRosdahl


  • Jr. Member
  • **
  • Posts: 30
Re: TNT Infused
« Reply #4 on: November 25, 2023, 06:51:39 PM »
Roto Grip TNT Infused Cover: eTrax Plus Hybrid Reactive Core: Torpex Core RG: 2.47 RG. Diff.: 0.052 Finish: Reacta Gloss Roto Grip’s new TNT Infused is a Hybrid (2/3 Pearl, 1/3 Solid) Symmetrical 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. Drilled this piece with the Pin above the bridge, CG kicked out 1” from the palm. I threw this piece on a fresh 42’ House pattern. Out of Box ball motion was smooth through the fronts with a hockey stick Motion on the backend. I compared this piece to the Roto Grip Magic Gem (Asym), Clone (Asym), and Hustle USA (Sym). Magic Gem 2-2 Left but started early in the mids with a smooth backend. Clone was similar line as the Magic Gem but a few more on the backend. Hustle USA was 3-3 Right and is smoother on the backend. This piece fits between the Magic Gem and the Hustle USA.


  • Jr. Member
  • **
  • Posts: 41
TNT Infused
« Reply #5 on: November 27, 2023, 01:29:13 PM »
The all new TNT Infused is Roto Grips newest addition to the HP3 line. The infused features the Torpex Core (in the original TNT as well) with the eTrax Hybrid coverstock (with Reacta gloss) wrapped around it. I think that the Infused was a great addition to the line, I felt that the original TNT was a ball that was very shot dependent. If I needed a ball to be slow and rolly it was my go-to ball, however, I thought that the coverstock may have been too strong unless there was a lot of oil in the front part of the lane. I think that the eTrax Hybrid coverstock is more of what I like to see out of a ball, it allows the ball to slow down in the midlane without bogging down when it gets to the pins. The TNT Infused is great when you want to move in and open up the lane without sacrificing midlane control. This ball made a good ball (TNT) even better! Go out to your local SPI proshop and get yours today!

  • Jr. Member
  • **
  • Posts: 21
Roto Grip TNT Infused review by Ethan Fiore
« Reply #6 on: November 28, 2023, 07:52:47 PM »
Lane Condition
Length: 40
Volume: Medium
Type (THS, Sport Pattern etc): THS

The TNT Infused is our new Hybrid from the TNT Line. With the Torpex Core and eTrax Hybrid Cover, it really digs into the lane like the original TNT. Comparing it to my Zen and weaker asymmetrics, this ball still out curves then all. Never struggles to get back from whatever angle you can think. This ball is a monster!

YouTube Review

Social Media
Click This Link Below For All Social Media :

Coolwick Customizable Jerseys
Save 10% on your order by using code Efiore10

Bowler Stats
Ethan Fiore
⭐PBA Member⭐Roto Grip Staff⭐CoolWick Staff⭐Tournament Director⭐
Right 2 Handed
Rev Rate: 500
Speed: 17.5
PAP: 4 1/8 up 7/8


  • Jr. Member
  • **
  • Posts: 63
Re: TNT Infused
« Reply #7 on: November 29, 2023, 09:03:48 PM »
Roto Grip TNT Infused
Cover: eTrax™ PLUS Hybrid Reactive
Weight Block: Torpex™ Core (Symmetrical)
Color: Glow Orange/Copper/Plum
Looking for a versatile benchmark ball that will be great as the first ball out of your bag on league night? Looking for a upgrade from that Tropical? Look no further than the TNT Infused. This ball plays off the original success from the TNT. The TNT infused is the type of ball that will get down the lane while offering plenty of pop on the backend. Being that the ball is a hybrid you won’t have to worry about the ball reading to early on the lane or over hooking on you. Being that the ball comes with the reacta shine you will not have to worry about getting through the fronts, it will get cleanly through the fronts while offering a good pop when it hits the pocket. When comparing this ball to other’s in my bag I am often drawn to the OG Hyroad with the TNT getting the slight edge due to bright vibrant colors. I would highly recommend this ball to anyone who is looking for a new hybrid in their bag.
Will Tefft
Roto Grip Pro Shop Staff Member