2027 DeMarini Merciless 13.5" End Loaded USA Slowpitch Softball Bat: WBD2679010

The 2027 DeMarini Merciless Slowpitch Softball Bat is built for hitters who want a big barrel, endloaded swing feel, and unyielding power in a USA slowpitch bat. Designed with a massive 13.5” endloaded barrel, the Merciless is made for players who want to deliver serious force through the zone and punish anything left over the plate.

The star of the show is the Stack3d Composite Barrel, featuring a double-wall design that creates a massive sweet spot with soft compression for a game-ready feel. This barrel setup is built to launch the ball when you square it up, giving power hitters the confidence to swing with intent.

Paired with DeMarini’s ZnX Alloy Handle, the Merciless delivers added stiffness and durability through the handle. By reducing handle flex, the ZnX Alloy Handle helps force the barrel to deflect more, supporting increased barrel performance and a powerful feel at contact.

Designed and built in the USA and manufactured in Hillsboro, Oregon, the 2027 DeMarini Merciless brings big-barrel performance, a strong endloaded finish, and USA Slowpitch certification to players ready to do damage.

Product Features: 

• Two-piece slowpitch bat built for power hitters


• 13.5” endloaded barrel for added barrel presence and strong power through contact


• 2 1/4 inch Barrel Diameter 


• Stack3d Composite Barrel with double-wall construction


• Soft compression design for a game-ready feel


• Massive sweet spot built to launch the ball when squared up


• ZnX Alloy Handle increases stiffness and durability


• Reduced handle flex helps force the barrel to deflect more for increased barrel performance


• Built for hitters who want an endloaded USA slowpitch bat with serious power


• One Year Manufacturer Warranty Included


• Colorway: Red / Silver

FAQ

Who is the 2027 DeMarini Merciless best for?
The Merciless is built for USA slowpitch players who want a powerful two-piece bat with a massive 13.5” endloaded barrel.

Is the DeMarini Merciless balanced or endloaded?
The 2027 DeMarini Merciless features an endloaded swing feel, giving hitters added barrel presence and more power through contact.

What is Stack3d Composite Barrel construction?
The Stack3d Composite Barrel uses a double-wall design to create a massive sweet spot with soft compression for a game-ready feel.

What does the ZnX Alloy Handle do?
The ZnX Alloy Handle increases stiffness and durability, helping reduce handle flex so the barrel can deflect more for increased performance.

What certification does the 2027 DeMarini Merciless have?
The 2027 DeMarini Merciless is certified for USA Slowpitch play.

For a useful category-level comparison, see our USA/ASA slowpitch bats selection and evaluate this model against other bats with the same drop, construction and intended playing format.

If barrel stiffness or equipment condition is part of the decision, our explanation of how bat compression testing works gives useful background on what measurements can and cannot tell you about a bat.

DeMarini USA slowpitch: current weight and barrel options

This Merciless model has end-loaded weighting and a 13.5" barrel. In-stock 34-inch configurations: 34 inch / 24.5 oz, 34 inch / 25.5 oz, 34 inch / 26.5 oz. Compare the selected ounces and handle feel against the player's ability to maintain timing and solid contact, rather than assuming a heavier barrel always performs better.

Browse slowpitch softball bats. This is factory-stock DeMarini product information only.