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  • Free Shipping

  • -10 Length-To-Weight Ratio

  • 2 3/4 Inch Barrel Diameter

  • Full Twelve (12) Month Manufacturer's Warranty

  • USSSA 1.15 BPF Certified

  • Balanced Swing Feel

  • One-Piece, All-Alloy Baseball Bat

  • Colorway: Black | Grey | Silver & Red Graphics

  • 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 Save SaveCancel

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

  • Junior Big Barrel Bat - Recommended For Use In Coach Pitch And Machine Pitch Leagues Where Pitch Velocities Are Between 40-45 MPH Or Lower (Typically For 5-7 Year Olds)


Marucci CAT 9 -10 Junior Big Barrel Baseball Bat: MJBBC9

This CAT 9 bat is built for young ball players in USSSA leagues that are specifically being thrown to by a coach or a machine. If the speed of the pitch from the coach or machine is between 40-45 mph or below...consider this bat!

Bat Benefits

Marucci outfits even their bats built for the youngest players with their best material. The AZR alloy material undergoes a special treatment process and as a result, it provides (1) better feel (2) more forgiveness and (3) the best performance.

Combine that material with a classic, one-piece design plus the AV2 Anti-Vibration knob and you've got a bat that swings as comfortably as any bat and performs as well (or better) than any bat!


With such a high performing bat, Marucci knows that they have to offer some insurance on it. Because of that knowledge, they do extend a twelve (12) month warranty on this bat. If you buy this bat and notice something wrong within 12 months from the purchase date, please reach out to our resident Bat Experts from JustBats. The Experts can be reached on PHONES at 1-866-321-2287, by EMAIL at or with the CHAT application by clicking on the box in the bottom right corner. The Bat Experts will get you the info and materials needed to send the bat to Marucci for a replacement bat!

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Questions and Answers (1)

Have a question about the Marucci CAT 9 -10 Junior Big Barrel Baseball Bat: MJBBC9? Ask our team of experts and they will respond within 24 hours.

What is the difference between the Cat 9 -10 Junior Big Barrel ($219.99) and the Cat 9 -10 Senior Big Barrel ($279.99)? Both available in 27/17 (size needed)
Junior Big Barrel bats are only intended for coaches pitch and machine pitch (speeds 45-50mph and below). Once your player gets into kids pitch, we would not recommend using a Junior Big Barrel Bat.
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 -10 Junior Big Barrel Baseball Bat: MJBBC9
Approved For USSSA
Barrel Diameter 2 3/4"
Baseball Bats Coach Pitch
Bat Construction One-Piece
Bat Type Baseball
Color Black
Deals Personalization Eligible
Length to Weight Ratio -10
Material Aluminum
Price $200 - $299.99
Series CAT CAT9
Swing Weight Balanced
Vendor Marucci
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