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Get Your Custom Bat Knob Sticker for $9.99


  • AZR Alloy - Undergoes A 3-Stage Thermal Treatment Process. Creates A More Responsive Microstructure That Results In A Better Feel, More Forgiveness & More Performance. It Does All This While Maintaining The Strength Of The Material.

  • Multi-Variable Wall Design Creates An Expanded Sweet Spot And Thinner Barrel Walls That Are More Forgiving After Off-Centered Contact

  • 2nd Generation AV2 Anti-Vibration Knob Features An Upgraded, Harmonic Dampening System For Better Feel And Less Negative Vibrational Feedback Save SaveCancel

  • Ring-Free Barrel Construction Allows For More Barrel Flex And Increases Performance With No Dead Spots

  • Precision-Balanced Barrel Results In A Lower M.O.I. And Balanced Feel For Precision And Control

  • One-Piece, All-Alloy Construction for a Traditional Feel

  • Micro-Perforated Soft-Touch Grip With Extra Tack Improves Feel And Control Save SaveCancel

  • 2 3/4 Inch Barrel Diameter

  • USSSA 1.15 BPF Certification

  • Free Shipping

  • -8 Length-To-Weight Ratio

  • Full Twelve (12) Month Manufacturer's Warranty

  • Balanced Swing Feel

  • Colorway: Black | Grey | Silver & Red Graphics


Marucci CAT 9 -8 USSSA Baseball Bat: MSBC98

The Marucci CAT is the bat to use for lighting up USSSA fields this season. One-piece, all-alloy and a -8 size will make it a popular choice for batters looking to move from the -10 size of bat.

Bat Benefits

The CAT 9 is all about the new AZR aluminum material. It undergoes an intensive 3 stage thermal treatment process. And when the alloy material comes out on the other side of that process; it is equipped to deliver better feel, more forgiveness and high performance!

Don't forget that even though this is a one-piece bat, it swings nearly as comfortably as any 2-piece bat out there. This is because it is outfitted with the 2nd edition of the AV2 Anti-Vibration knob. This knob eliminates nearly all vibration that gets down to a player's hands (even if you don't get it on the sweet spot).


Marucci is in the business of helping customers. Because of that, they offer a twelve (12) month warranty on this bat that extends from the date of the purchase. If you buy the bat from JustBats and experience a warranty issue within 12 months of the date it was bought, please reach out to us by PHONE at 1-866-321-2287, EMAIL at or by CHAT by clicking into the box in the bottom right corner of this page. Our resident Bat Experts will assist in getting you the info to begin a warranty shipment to Marucci so your bat can be replaced.

Reviews (2)

Average Ratings Based on 2 Customer Reviews

Overall Rating
General Feel
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Overall Rating
General Feel
CAT9 Darren Strange Parent

Pros: Pop

Cons: None noted

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Overall Rating
General Feel
Grandson Wayne Oglesbee Other

Pros: My Grandson loves everything about this bat. I him the Cat 8 and he just had the best season ever. He just turned 12 some in honor of such a good season I got him the Catc9. Great bat

Cons: None

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Questions and Answers (4)

Have a question about the Marucci CAT 9 -8 USSSA Baseball Bat: MSBC98? Ask our team of experts and they will respond within 24 hours.

Are there major upgrades from the Cat 8 -8 one piece vs the new Cat 9 -8?
Joshua Booker
This new Marucci CAT 9 -8 USSSA Baseball Bat: MSBC98 goes through a 3-stage thermal treatment process, they say that this material should create better feel, better forgiveness and better performance while maintaining the same strength of material seen in past Cat bats.
Has there been testing to show the difference between the CAT 8 and CAT 9 in terms of “pop” by measuring the distance of all hits from the same bat speed?
Coach C.
No independent testing has been conducted on the Marucci CAT 9 -8 USSSA Baseball Bat: MSBC98 to ascertain what the performance limits are on the bat.
What's the difference between the drop -8 and the drop -10?
LeTra Lewis
The Marucci CAT 9 -8 USSSA Baseball Bat: MSBC98 would be 2 ounces heavier than the -10 version in the same length.
Does this bat come in a 2 5/8 barrel??
Unfortunately, this bat does not come in a 2 5/8" barrel.
Show all 4 Questions and Answers about the Marucci CAT 9 -8 USSSA Baseball Bat: MSBC98
No results. If you searched for a specific term, please broaden your search. If you have already done this and still cannot find what you're looking for, please submit your question and we'll get back to you within 24 hours. Thanks!

About the Brand

At Marucci, we make our products the same way you play baseball: Hard work, determination, and attention to detail. This product is handcrafted. We are committed to never releasing a product before it meets the standard set forth by our wood bat. Our process is proven. The only way to achieve perfection is to accept nothing else. We first have gloves to Big Leaguers in our inner circle to break in and critique - knowing the extreme situations they would be put in. Players like Chase Utley allowed us to comprehend what a player needs and looks for in an ideal fielding glove. The Marucci player advisory board was integral in testing, tweaking, and ulitmatley perfecting the glove line to have the feel and features that matter to players. Understanding this professional standard of perfection has allowed us to handcraft a performance product that will last consistently maximize your game. Handcrafted, one by one, with the highest quality materials, for superior quality and feel, these gloves will require a gradual break-in period which provides a longer lasting form and shape. Professionally Inspired. Precision Crafted. Marucci: Honor the Game.

Bat Properties

Marucci CAT 9 -8 USSSA Baseball Bat: MSBC98
Approved For USSSA
Barrel Diameter 2 3/4"
Baseball Bats Youth Big Barrel
Bat Construction One-Piece
Bat Type Baseball
Color Black
Deals Personalization Eligible
Length to Weight Ratio - 8
Material Aluminum
Price $200 - $299.99
Series CAT CAT9
Swing Weight Balanced
Vendor Marucci
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