2016 Marucci CAT8 Alloy USSSA Certified Bat (-10) 21 oz 31" (Used)

These bats are legit, especially for serious players. Some of the key features: • AZ105 Alloy: One of Marucci’s strongest aluminum alloys.  • Ring-Free Barrel / Multi-Variable Wall Design: The barrel is engineered to avoid the “dead spots” you sometimes get in metal bats — better pop, more forgiveness on mis-hits.  • Balanced or Slight Power Feel Options (-10, -8, etc.): You can choose a bat weight drop that works for your swing speed. A -10 tends to be lighter and easier to whip; a -8 gives a bit more power.  • USSSA / Other League Certifications: These bats meet league standards (USSSA 1.15 BPF, etc.), so you can use them in most travel ball tournaments.  ⸻ ⚠ What to check when buying used Used is fine—just inspect carefully so you don’t buy a lemon. • Straightness: Make sure the barrel and handle are straight, no bends. Even slight warping alters performance. • Barrel condition: Look for big dents, cracks, or signs the barrel wall has been compromised. These can kill “pop” and could void what usable life the bat had. • Grip & knob: The grip should still have some tack; the knob (especially Marucci’s AV2 anti-vibration knobs) shouldn’t be cracked or loose. • Certification stamp: Make sure the league stamp (USSSA, BBCOR etc.) is still readable. Sometimes with wear it fades—if it’s gone, you might have issues in tournaments. • Balance / feel: Even if the bat looks okay, swing it. If it feels “dead” (sound, less snap), it may have lost too much performance. ⸻ What price makes sense New CAT8 bats often retail for $200–$300+ depending on the model (drop weight, barrel size, etc.). 

The Marucci CAT 8 features AZ105 Alloy, the strongest aluminum in Marucci's lineup, allowing for thinner barrel walls and improved durability. It has an expanded sweet spot and a 2nd generation AV2 Anti-Vibration Knob for better feel. With its one-piece alloy construction and tapered handle with a soft-touch grip, batters gain better control at the plate.

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The CAT8 is an older model from 2019 and a good BBCOR and USSSA bat. Very good performing bat with a sound that players love. Lightweight and easy to swing. It's probably one of the best sellers, and since the CAT8 is still available, it's perhaps one of the better bang for the buck. Prices dropped for this older model. So, it is a good match for an entry-level player on a tight budget.

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@BatExperts, Expert Review