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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” 1PC Loaded (MSPBP1LU) brings colorful chaos with serious pop, combining a traditional one-piece feel with a slightly end-loaded (Loaded) swing weight that’s balanced enough for all to swing—and dangerous enough to do damage. Designed for players who want clean, connected feedback and game-ready performance, Block Party delivers power you can assemble swing after swing.
At the core is DisRupt Mono Barrel Technology, engineered for hot, forgiving, controlled performance with optimized comfort from a one-piece build. A Unified Composite Matrix creates a continuous carbon/resin layup to eliminate weak points between the handle and barrel, while Layered Fiber Architecture and an Optimized Flex Gradient tune stiffness and responsiveness so the sweet spot stays lively and the trampoline effect stays strong. The Pre-Conditioned Composite Resin is built to yield slightly early for a faster break-in, while a Durability Shield Layer helps resist microcracking and delamination to keep the pop lasting longer. Add Modulated Stiffness Technology (MST) to fine-tune flex and stiffness through key zones, and you get a bat that feels locked-in, responsive, and ready to punish contact.
- Brand: Marucci
- Sport: Slowpitch Softball
- Barrel Diameter: 2-1/4 in
- Certification: USSSA, NSA, ISA
- One-Piece Composite Construction
- DisRupt Mono Barrel Tech
- Unified Composite Matrix – Continuous carbon/resin layup to eliminate weak points
- Layered Fiber Architecture – Strategically stacked fibers to tune stiffness and flex
- Optimized Flex Gradient – Stiffer zones near taper/endcap + responsive sweet spot flex for max trampoline
- Durability Shield Layer – Resists microcracking/delamination from repeated impacts
- 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!
