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Available both stock/untouched and Heat Rolled with Progressive Pressure - choose your preference during checkout!
Built to smash. The Block Party USSSA Slowpitch Bat – 12.75” 2PC Loaded (MSPBP2LU) brings colorful chaos with a dangerous blend of flex, feel, and pop. Inspired by the iconic world of building bricks, this two-piece composite is made for players who like to create their own highlight reels—pairing a slightly end-loaded (Loaded) swing weight with a responsive barrel and a smoother feel through contact.
At the core is DisRupt Duo Barrel Technology, engineered for hot, forgiving, controlled performance with optimized comfort from a two-piece design. Multi-Layered Barrel Engineering blends impact-toughened composite layers for controlled flex and rebound, while the connection system is tuned for optimized handle-to-barrel energy transfer—letting the barrel work while reducing hand sting. A dynamically tuned flex profile allows the barrel to flex a bit deeper than the Mono version for extra whip, helping players with varying swing speeds get more out of every cut. Add a resin-infused toughening layer for fatigue resistance and an engineered sweet spot expansion design that broadens the performance zone, and you’ve got a bat that stays lively and confident through the season. Finished with Modulated Stiffness Technology (MST) to fine-tune flex and stiffness where it matters most, Block Party is ready to assemble runs in a hurry.
- Brand: Marucci
- Sport: Slowpitch Softball
- Barrel Diameter: 2-1/4 in
- Certification: USSSA, NSA, ISA
- Two-Piece Composite Construction
- DisRupt Duo Barrel Tech
- Multi-Layered Barrel Engineering – Hybrid composite layup for controlled flex and rebound
- Optimized Handle-to-Barrel Energy Transfer – Tuned connection allows barrel flex while isolating vibration
- Dynamically Tuned Flex Profile – Deeper barrel flex for added whip across a range of swing speeds
- Resin-Infused Toughening Layer – Improved fatigue resistance for consistent performance over time
- Modulated Stiffness Technology (MST) – Fine-tunes flex/stiffness for better energy transfer, control, and feel
- Barrel Length: 12.75"
- Warranty: 1 Year
- Year Issued: 2026
- Adding our Heat Roll with Progressive Pressure to your order may cause decertification, check with the governing body of your league for clarification
Manufacturing tolerances, performance considerations, and grip weight may cause variations from the listed weight/Mass Index.
OPTION GUIDE: Should I order this bat stock/untouched or Heat Rolled with Progressive Pressure?
If you order your new bat Heat Rolled with Progressive Pressure, it will be delivered to you completely and evenly broken in. This process adds 20-40ft of distance to your solid hits, increases consistency, improves durability and adds 2-3 business days of lead time to your order. If you plan to use the bat in an official game or event, please verify the legality of our process with your league or sanctioning body before use. We (LongballBats.com) do not encourage the use of a Heat Rolled bat in any game or event where it is against the rules. Click here for details about our process!
