Brunswick Quantum Bias Bowling Ball

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MSRP: $279.95
— You save $110.00
Frequently bought together:


Brunswick Quantum Bias Bowling Ball

  • Color: White
  • Coverstock: ECA-XR
  • Weight Block: Quantum Mushroom High RG Asym
  • Factory Finish:  1000 Siaair
  • Flare Potential: High
  • Radius of Gyration (RG): 16lbs - 2.522; 15lbs - 2.563; 14lbs - 2.642
  • Differential (Diff): 16lbs - 0.052; 15lbs - 0.052; 14lbs - 0.044
  • Intermediate Differential (Diff): 0.013
  • Fragrance: N/A

Additional product information:

Quantum Bias is the first asymmetric ball in the Quantum line. Our ECA-XR coverstock combined with the Quantum Mushroom High RG Asymmetric core gives strong hooking motion with excellent pin carry on oily lane conditions.

The Quantum series has been designed with 3.5 times more coverstock for improved durability, performance longevity, and incredible hitting power. The enhanced Coefficient of Restitution results in the pins flying faster for greater pin action and more strikes.



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Additional Information

Lane Condition:
Factory Finish:
Sanded 1000 Siaair
Core Type:
Solid Reactive
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6 Reviews

  • 5
    Not a Gimmick Ball

    Posted by Todd Allred on Nov 11th 2018

    The one thing missing from the Quantum line was an asymmetrical piece. They hit it out of the park with the Bias. This ball is a beast that offers more backend motion than any quantum I’ve ever thrown (I’ve thrown them all). Yes it’s a white ball, and yes it gets dirty but that’s what cleaners are for. All balls get equally as dirty but now you can see it and make sure you are cleaning it properly. I buy my equipment for performance and the Bias offers plenty of that. Out of the box you can throw it on some pretty heavy patterns. Shined up it has great length and will not quit. The thick outer shell throws pins in all direction. Just a great all around piece

  • 5

    Posted by James Bryant on Nov 8th 2018

    SPECIAL! That's all that can be said about the new Quantum Bias! The first Asym Quantum is a home run! I find this ball extremely smooth through the fronts and mid part of the lane. Once the ball reads the friction, it makes a left turn with extreme continuation.

  • 5
    Quantum Strong

    Posted by Chris Garrett on Sep 16th 2018


    Pin Length: 3.2"

    Starting Top Weight: 3.0 oz

    Ball Weight: 15 lbs 3 oz


    Ball: 65 x 5 x 35

    X Hole (if there is one): none


    Rev Rate: 375 rpms

    Ball Speed:17.5 mph off hand

    PAP/Track: 4 3/4 over 3/4 up


    Grit: 500/2000 Siaair

    Type: (Matte, Polish, Sanded): Sanded


    Lengths of patterns: 41 foot house shot

    Volumes: moderate

    Type: house


    Length: Clean through the heads with a strong arc

    Back End: Strong arc

    Overall Hook: Strong

    Midlane Read: Strong

    Breakpoint Shape: Strong arc


    Likes: Strength and pin carry

    Dislikes: none

    The Quantum Bias is the first asymmetrical Quantum ball and as such is probably the strongest Quantum ever made. This ball makes a stronger earlier move than the previous Forest Green Quantum. Compared to more recent releases, the Quantum Bias is a bit longer than the Kingpin or Kingpin Max with a similar amount of recovery at the breakpoint. The additional length the ball gives makes it very versatile for a strong ball and increases pin carry. This Quantum ball will allow you to play inside or out when there is some head oil present. In short, the Quantum Bias is a super strong, versatile ball with great pin carry and cool looks. If you are looking for a strong ball that can handle oil and really scatter the pins, check out the Quantum Bias.

  • 5
    THE ball to have!

    Posted by Will Huefner on Sep 1st 2018

    "the ball has the strongest continuous motion I have ever seen in a bowling ball.
    on a house shot it sets up early on the mid lane roll and just continues into the pocket.
    this ball is just amazing! a must have for any bowlers arsenal.
    however too much loft will cause a lot of skid, not giving it time to truly set itself up."

  • 5
    What a performance

    Posted by Marc-Andre Gagne on Aug 30th 2018

    Here is the new addition to the Quantum line, the Quantum Bias. This is the first time ever Brunswick produced an asymmetrical Quantum. They used proven mushroom core but they tweaked it to make it asymmetrical. They wrapped it up with a brand new white solid cover stock. Don’t forget that in the Quantums, you only get a core and cover stock, no filler. That means you get 13% more carry.

    Because I wanted this ball to complement my Creed Rebellion, I went with a weaker drilling. I used a pin up 60 x 4.5” x 40. The pin is passed the middle of my fingers.

    On the lane, this ball does what it is supposed to do. Compared to my Creed Rebellion, I have to move my feet 2 boards right with my feet and 1 board right with my target. The Bias complements really well the Rebellion. When it begins to burn up, I switch to the Bias and I can continue to strike using the same line. Compared to my Turmoil Solid, I had to move 3 boards left with my feet and 2 boards left with my target because the ball is stronger.

    I used the ball last weekend on two really tight patterns (ratios less than 2:1). One pattern being a 35’ short pattern and the other being a 46’ long pattern. On the short, I was able to use the Bias at game 3 when the pattern was broken down and when there was some carry down. The ball was predictable on the backend. I had to move a little bit inside playing around 7. On the long, I used the Bias the whole block. I was able to play a straighter line (around 13). The ball was rolling really well. When the pattern broke down, I just moved left and followed the transition.

    Because the ball is white, it gets dirty pretty quick. Since the ball has a dull surface, it’s real easy to get it back to bright white. You just have to use a Siiar pad and a cleaner.

    To conclude if you want to have a great performance and a ball that’s gonna make head turns, the Quantum Bias is your choice.

  • 5
    A Ball Unlike Anything I've Ever Thrown!!!

    Posted by Bryan Williams on Aug 18th 2018

    The Quantum Bias is absolutely next level GOOD! I have thrown many balls and most of the Quantum line. This ball is UNLIKE ANY BALL I have ever thrown. The ball motion and hitting power of this ball is just amazing! The Quantum Bias is versatile and best used on heavy oil, with multiple layouts that will complement any bowler at any level.
    Currently have the Pin and CG inline with the pin above my fingers, and the CG in my palm and the ball never loses hook or hitting power. Questions may be asked about cleaning the ball, but most of the best cleaners, especially the cleaners from Genesis work very well on keeping the ball as clean as possible.
    This ball is a ball you just have to see it to believe how incredible it truly is. #brunswickbowling, #dv8bowling, #radicalbowling technologies

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