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2020 DeMarini Ultimate Onslaught Review

By Bat Digest | Last Updated November 17, 2022

For the 30th anniversary, DeMarini releases a 2020 version of the CF called the 2020 DeMarini CF Onslaught. The bat is a replica of the 2020 Version of the BBCOR CF. That is, it’s a two-piece composite bat with a D-Fusion handle, a big barrel that only comes in a 32 and 33-inch. It’s a review, unless we were caught up in the aesthetics, is as glowing as the CF (its the same bat). It feels great and has a perfect blend of balance and barrel size. Although DeMarini’s CF in BBCOR is not as dominant as the USSSA version, it’s a worthy option for any player looking for a smooth smash on a big barreled balanced bat in the BBCOR space.

Price Check

2020 Ultimate Onslaught Video

2020 Ultimate Onslaught Video

2020 Ultimate Onslaught Models

In BBCOR, our hitters are most impressed with the balance and barrel size of the CF 2020 DeMarini Ultimate Onslaught. The feel is as good as other BBCOR two-piece composites (save the Meta, according to our testers). It ranks out well enough to be considered for any hitter that wants the light to balanced swing and likes the smooth smash of a two-piece composite.


General Recomendations

We recommend the BBCOR 2020 DeMarini Ultimate Onslaught to any hitter that likes the CF, doesn’t have a budget, and wants the best BBCOR bat DeMarini makes. (Although some would argue The Goods, that’s a different hitter type).

Model Recommendations


BBCOR Review

Ultimate Onslaught BBCOR Ratings (key)
2 5 4 2 4 4 4 5 2 3
MOI Tech Drb Flx Prof ReSl PlaRa ExVe Relv Dmnd

Sizing: 32, 33-inch
Release Date: August 1, 2019
Serial: CBCONSL20
Bat Type: Two Piece Composite
Barrel Size: 2 5/8
See other BBCOR Bats

Comparable Bats

At the risk of stating the obvious, the most comparable bat is the 2020 DeMarini CF. It is, actually, the exact same bat as the 2020 DeMarini CF. Same bat, different paint job.

If you are looking for different bats than the Ultimate Onslaught/CF then check out bats like the Meta, Quatro Pro, ADV 360 and Prime.

Previous Models

There was no previous year version of the Onslaught in BBCOR. There was a 2019 version of the CF Zen (which this bat was built after). If you really want to see the genealogy of this bat then check out that bat and its predecessors.


Like the 2020 CF, the DeMarini Onslaught is a two-piece composite bat that uses the Paraflex composite in the barrel and the 3-Fusion handle connective piece. The swing weight is on the lighter side of average BBCOR bat swing weights and the barrel size is on the bigger size compared to other BBCOR bats.

Overall Ratings

The overall rating uses seven different weighted metrics to determine our overall score. Half of total rating comes from the player and our exit speed tests (Player Rating: 25%, Performance: 25%).The other categories are Relevance (20%), Demand (10%), Durability (10%), Resell Score (5%), and Tech Specs (5%).

*: When a bat is denoted by a star (*) it is a preliminary rating. Expect it to be updated as we learn more about the bat and gather more data.

(PlaRa) Player Rating: We measure player rating from user reviews. Those users include our own hitters that we test at the lab as well as reviews we find online.

(ExVe) Performance: Performance measures the exit speeds and distances we capture in our hitting lab with HitTrax using these bats.

(Relv) Relevance: We measure the number of sizes and the MOI of the bat. Bats with a wider range of options get a better score.

(Dmnd) Demand: Demand is measured by consumer sentiment and the buzz around the bat.

(Drb) Durability: A bat’s durability is measured by user reviews as well as feedback from manufacturers.

(ReSl) Resell Score: Based on the price the bats go for used. Higher prices mean greater user demand which means, generally, a better bat. A resell value closer to its original price means a higher score.

(Tech) Tech Specs: We rate the bat on its technological advancements from previous years and compared to the industry at large. This is our chance to reward companies who are trying to innovate.
MOI or Mass Moment of Inertia is a measurement of bat swing weight. This quantifies how difficult it is to swing a bat. The industry often refers to this as things like End Load or Balanced but those words have been overused to the point of meaninglessness. We measure the actual swing weights of each bat we test using the industry-standard pendulum period, balance point, and scale weight. You can read more about that here.
The price is the original MSRP price of the bat.
The types of bats are single-piece alloy (SPA), two-piece composite (TPC), single-piece composite (SPC), hybrid (Hyb.), and wood (Wood). Hybrid bats are made of composite handles and alloy barrles.
The estimated date the bat began distribution.

Download our data.