2026 Marucci Block Party 1-Piece Slowpitch Bat Review
Marucci's one-piece, end-loaded Block Party — a 12.75" composite slowpitch barrel built for connected power.
Been on the market a while — keep an eye out for in-season price drops.
Check today's price →The Score
How we score ↗How big and forgiving the barrel is — based on barrel length, construction (one- vs two-piece, alloy vs composite), and how it plays on balls hit off the center. A primary driver of the overall score.
Raw exit velocity and distance. We use measured numbers from freely available independent testing when they exist; otherwise construction and consensus, judged against the certification’s performance ceiling. A primary driver of the overall score.
Comfort and feedback on contact — vibration dampening from the knob/connection, the sting of a stiff one-piece vs a smooth two-piece, and the sound off the barrel. A primary driver of the overall score.
How well it holds up and how the company stands behind it — documented cracking/denting reports, cold-weather behavior, and the brand’s real warranty record. Good to know, but weighted lightly in the score.
Our take on price-for-performance — the overall package weighed against its cost and what comparable bats run. Shown for context; it is NOT factored into the overall score (price changes too often and is personal).
Why this score: Preliminary score from the bat's construction, class, brand and price — an honest first pass we refine as we test more and any independent lab data appears.
Our Review
The Block Party 1-Piece is Marucci's straightforward power slowpitch bat: a one-piece composite with an end-load and a 12.75" barrel that puts mass behind the ball and keeps the feel direct. It rewards stronger hitters who can keep the barrel moving, and it carries Marucci's reputation for solid build quality. Scores reflect strong power and a usable sweet spot at $299.99.
Pros & Cons
Pros
- End-load power in a connected one-piece build
- Marucci build quality
- Usable 12.75" barrel
Cons
- End-load suits stronger hitters
- Composite needs a short break-in
Full Specifications
| Brand | Marucci |
|---|---|
| Model | Block Party 1-Piece |
| Model Year | 2026 |
| Certification | Slowpitch |
| Sport | Softball |
| Construction | One-piece composite |
| Model # | MSPBP1LU |
| Drop | — |
| Barrel | 2 1/4" |
| Swing Weight | End-loaded |
| MSRP | $299.99 |
Where to Buy
2026 Marucci Block Party 1-Piece Slowpitch Bat — FAQ
Is the 2026 Marucci Block Party 1-Piece a good Slowpitch bat?
We rate it 8.5/10 (Grade A). Marucci's one-piece, end-loaded Block Party — a 12.75" composite slowpitch barrel built for connected power.
Is the Marucci Block Party 1-Piece Slowpitch-legal?
Yes — it's Slowpitch certified by the certifying labs. Certified for USSSA / NSA / ISA slowpitch play.
How much does the 2026 Block Party 1-Piece cost?
MSRP is $299.99. We list the lowest price across CheapBats and Amazon on this page.
New to buying bats? Read our bat sizing guide, certifications explained, or browse all guides.
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Sources: CheapBats — 2026 Marucci Block Party USSSA Slowpitch Softball Bat 1 Piece 12.75" Barrel MSPBP1LU