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2 1/4 Inch Barrel Diameter
13.50 Inch Barrel Length
Balanced Swing Feel
Two-Piece, All-Composite Slow Pitch Bat
Displays USSSA (New NTS Tested | 240 Compression), NSA & ISA Certifications
Colorway: Red | Charcoal | Black
NEW V2 Flex Barrel - Creates Ultimate Whip, which helps generate maximum output on every swing.
NEW MidFlex Handle - Helps Create an Elite Feel For The Bat Enhancing Your Swing Mechanics For Optimal Performance.
A1 Knob - Small Knob Provides Increased Comfort During The Swing (Easier To Wrap Your Bottom Finger[s] Around It When Gripping The Bat)
Full Twelve (12) Month Manufacturer's Warranty (Save Serial Sticker That Comes With Bat To Keep Warranty Intact)
Miken Primo 13.5" Balanced USSSA Slow Pitch Softball Bat: MSU4PRMB
Get ready to elevate your game with the Miken Primo 13.5" Balanced USSSA Slow Pitch Softball Bat! Designed for players who demand the best, this bat is packed with cutting-edge technology to maximize your performance on the field.
Bat Benefits
The Miken Primo boasts a 2 1/4-inch barrel diameter and an impressive 13.50-inch barrel length, providing an expanded sweet spot for powerful, consistent hits. The new V2 Flex Barrel technology creates the ultimate whip effect, allowing you to generate maximum output on every swing. This innovation ensures that your hits are both powerful and precise, making it a game-changer for your offensive lineup.
Moreover, the Primo features the new MidFlex Handle, which delivers an elite feel, enhancing your overall bat control and comfort. The A1 Knob, designed with a small profile, increases comfort during your swing by allowing easier wrapping of your bottom fingers around the bat. This ergonomic feature is crucial for maintaining a firm, yet comfortable grip throughout your game, reducing fatigue and increasing swing efficiency.
Perfectly balanced, the Miken Primo offers an ideal combination of power and control, catering to players who prefer a well-rounded performance. Whether you’re aiming for distance or precision, this bat is engineered to help you achieve your best results on the field. Enhance your game with the Miken Primo 13.5" Balanced USSSA Slow Pitch Softball Bat and experience the difference in every swing.
Warranty
Miken is willing to offer a twelve (12) month manufacturer’s warranty on this bat. If you have purchased the bat from us and notice a defect on the bat within that original 12 month time period, please reach out to our Bat Experts. They will be happy to get you all the information needed to reach out to Miken to begin the warranty replacement process. An important thing to remember is that Miken will not accept a bat back for a warranty replacement if it does not have the original serial sticker with it. Because of that, be sure that you save the serial sticker that comes on the bat’s taper when it is first delivered.
Average Ratings Based on 1 Customer Review
Pros: Very forgiving Large sweet spot Hot out of the wrapper
Cons: N/A
Have a question about the 2025 Miken Primo 13.5" Balanced USSSA Slow Pitch Softball Bat: MSU4PRMB? Ask our team of experts and they will respond within 24 hours.
During the past few years, serious softball players have looked to Miken Sports for bats that provide the highest levels of performance and durability. Our relentless focus on both technology and the demands of players has made Miken the most demanded line of softball bats today.
Although composites are the latest trend in softball bats, the technology has been the core of Miken's success since the company's inception. Miken pioneered the modern high-performance composite softball bat in 1998 and has pushed the limits with every model since. No other bat company has driven innovation as hard, and the results are indisputable. Look around. If a player is serious about softball, they are most likely swinging a Miken bat.
The success of Miken Sports has been driven by two forces - innovation and a passion for delivering what players demand. The results are obvious. Players have decided that composites are the future for bats, and no one does composite like Miken.
| Approved For | USSSA ISA NSA |
|---|---|
| Barrel Diameter | 2 1/4 |
| Barrel Length | 13.5 Inch |
| Bat Construction | Two-Piece |
| Bat Type | Softball |
| Color | Red Charcoal |
| Hitting Style | Contact Hitter Power Hitter |
| Material | Composite |
| Series | Primo |
| Softball Bats | Slow Pitch |
| Swing Weight | Balanced |
| Vendor | Miken |

Great for all my leagues! Durable for the whole team and the USA look really pops out when we step up to the plate!
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$29.95
From the product page or cart, select the Bat Assurance Program for each bat you would like to purchase and complete your order.
You will have 30 days (from the day your bat arrives) to swing, hit, and even use it in a game to determine if it is the right bat for you.
If it's not, simply send it back to us and receive a FULL REFUND for the price of the bat.
If you love your bat, keep it. After 30 days we'll email you a promotional credit equal to the amount you paid for Bat Assurance, which can be applied to a future order in the next year. This credit can be used on JustBats or JustGloves.
Lizard Skins Bat Grips
$9.95 - $21.95
Lizard Skins grips feature Durasoft Polymer material. Lizard Skin works as a great all-around grip, balancing cushion with thickness, and providing the highest amount of versatility. This thickness is also great for transitioning to wood bats. DSP (Dura-Soft Polymer) batting grip was created based on the highly successful DSP handlebar tape for road bikes. Utilizing their knowledge and experience in developing grips, Lizard Skins designed and created this new innovative batting tape for baseball and softball players. Order the official bat grip of Major League Baseball today!
Routine Batting Gloves
$29.95
Sizing Chart for the Perfect Fit
We recommend getting the same size as your current pair of batting gloves. If you don't have a pair, measure the size of your hand from the top of your wrist to the top of your middle finger to find your recommended size:
Routine Guarantee
Backed by a Try-on guarantee! Play with them and return your pair within 14 days if they do not fit. Each pair also comes with a 365-day return policy on batting gloves that are in the original condition.
From the date of purchase, you can try them out, and if they do not fit or work perfectly for you, you may return them within 14 days for an exchange or full refund, even after trying them out. Returns are handled directly through JustBats.
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Available in Youth & Full Sizes
Adjustable wrist strap: Secure, custom fit for every player.
Chrome logo treatment
Digitally embossed goatskin palm chosen for superior durability.
Embossed branding: Adds a distinctive, professional flair.
Perforated fingers: Improved airflow for cool, dry hands.
Reinforced palm and thumb wrap in high wear zones.
Seamless, 4 way stretch lycra back of hand with silicone reinforcement for breathability and comfort.
Try-on guarantee: Wear them and return within 14 days if they’re not the right fit.
365-day return policy on batting gloves that are in the original condition
Pine Tar Stick
$19.95 - $24.95
Choose From Three Market-Leading Pine Tar Products...
JustBats Batter's Kit
$29.95
All the batting accessories you need to maximize your performance are in this Batter's Kit. The JustBats Batter's Kit features a bat weight (donut), thumb pad, knob pad, pine tar stick, and a bat grip all at an affordable price. This kit is pieced together to allow for the most comfort during your swing and add some swagger to your game. Get yours today and step up your confidence when you step up to the plate! We're here from click to hit!
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Gator Grip Pine Tar Stick Improves A Batter's Grip On The Handle Of The Bat
Bat Weight (Donut Style) Fits Over The End Of The Bat & Helps Improve Bat Speed
Bat Grip To Maximize Player's Control
Thumb Pad To Minimize Potential Discomfort To Area Between Thumb & Index Finger On The Top Hand
Knob Pad to Provide Bottom Hand Comfort During The Swing
All The Bat Accessories You Need To Take Your Game To The Next Level
