Bowler Ratings


Bowler ratings are from 1 to 10 in order of Stroker (ST), Tweener (TW), Cranker (CR)

General Info

Reviewed:February 2012
Coverstock Specs
Name:Tornadic Reactive Nano F-5
Type:Reactive Solid
Box Finish:4000 Grit Matte
Color:Lava Red / Lime Green
Core Specs
Int. Diff:0.000

For details on our standard test layouts, please click here.

The Altitude is the first ball from Jet we have gotten to review. We always look forward to throwing a ball from a new company to see what they have to offer to the bowling ball market.

We guessed correctly, when looking at the coverstock, that we would want to throw this ball on our heavy oil test pattern. The thick oil did nothing to slow down the Altitude. All the testers were able to make small adjustments into the oil pattern as it began to break down. All three were sending the Altitude to the same breakpoint with Stroker playing the straightest, crossing just inside the second arrow and going more up the boards than the other two testers. Cranker was the deepest, crossing the fourth arrow and sending the Altitude out to the same breakpoint down lane. Tweener was closer to Stroker at the arrows, but was able to see recovery from further right. The back end continuation was still present even after several games. None of the testers needed to adjust the box surface for this pattern.

The medium pattern forced both Tweener and Stroker to move about an arrow farther left than they were playing on the slick pattern. Cranker had to cover too many boards with the Altitude at its box finish on this pattern. We added a coat of polish that allowed him to play in the same area of the lane he played on the oily pattern. We recommend bowlers who want to play straighter trajectories to the pocket, especially on medium conditions, to shine the Altitude if they see too much friction.

We had trouble controlling the Altitude on our short test pattern. The low RG core, big differential, and a really strong reactive cover, make the Altitude a ball for oil and lots of it. We took all three test balls to a 4000 Abralon finish and applied a coat of polish to try and get the Altitude to push far enough down lane on this short pattern. Oily sport patterns will offer a nice reaction for the Altitude.

Our sport pattern offered a good look on the fresh, but as the pattern broke down, we had to raise the finish to keep the ball in the pocket.

Performance Ratings

The Altitude has a smooth motion at the breakpoint. We found this coverstock to be strong through the entire lane with all its action not just at the breakpoint and back end.
The solid 4000 matte finish handles oil well. Rougher textured bowling balls like this want to create traction through the head oil.
Back End16
This ball is plenty strong enough throughout the lane to not need a huge back end move. Bowlers who are looking for more back end can polish the cover to get it to store more energy for a bigger down lane move.
Total Hook53
The Altitude will cover as many boards as other high performance balls on the market. Keep in mind this ball needs oil up front in order to keep going at the back end.


The ability to handle heavy volumes of oil is the biggest attribute of the Altitude. The coverstock is a strong one that likes to hook.


Dry heads and shorter oil patterns will make the Altitude tough to control. Weaker drillings and surface adjustments are the best options for trying to make this ball work on these conditions.

Overall Summary

This is the first Jet ball we have tested. The simplicity of the core shape, combined with the aggressive coverstock, gave the test staff a strong hooking motion through the entire lane.

The BTM Ball Testing Team

About The BTM Ball Testing Team

The BTM Ball Testing Team is led by Eric Martinez. Our team of three testers has thrown and reviewed hundreds of bowling balls for Bowling This Month. When not testing balls for BTM, Eric owns and operates University Pro Shop in San Antonio, TX and he is an avid competitive bowler. Click here to learn more about how we test and review bowling balls.