Viper Bats, made in American Made, standard Production - 1-2 Weeks
MD99 Wood Bat
- Ash or birch or maple
- Drop −3
- Barrel large
- Handle thin
- Knob flared
- Slight end load

Facts as the maker states them, read 13 Oct 2026
The MD99 is a Viper Bats wood bat offered in ash, birch or maple, in lengths from 31 to 35 inches, with a -3 weight. The page describes a large flared knob, a thin handle, a large barrel and a slightly end-loaded feel.
| Model code | MD99 |
|---|---|
| Wood | Ash or birch or mapleWhat this meansAsh. Light and flexible with visible grain; flakes over time. Less common now. Birch. Softer than maple and more forgiving of mis-hits; hardens with use. A good choice for a first wood bat and for younger players. Maple. Dense and hard, the most common pro wood. Hits hard and holds up when the player squares the ball up; breaks rather than flakes when mis-hit. Quality varies a lot by maker. Tip: Maple from a good maker is the best wood bat money can buy; maple from a cheap one is the worst. |
| Drop | −3What this meansDrop is length minus weight: a 30 in, 20 oz bat is a -10. A bigger drop number means a lighter bat for its length. Younger players use -10 to -13; USSSA 13U is usually capped at -5; high school and college are -3. Tip: Check the drop your league allows before you look at anything else. |
| Barrel | Large barrelWhat this meansA big barrel (about 2.56 in and up) gives the most hitting surface. Its size does not decide the balance: some big-barrel bats are balanced. |
| Handle | Thin handleWhat this meansA handle under about 0.93 in. It whips through the zone and feels fast, but it stings more on mis-hits and, in wood, breaks more easily. Common on pro models. Tip: Thin handles and young hands do not mix well in cold weather; expect sting. |
| Knob | FlaredWhat this meansThe handle widens into the knob like the bell of a trumpet. Players who choke up or want leverage like it; it also keeps the bottom hand from sliding off. Popular from high school up. |
| Balance | Slight end load |
| Lengths | 31, 32, 32.5, 33, 33.5, 34, 34.5, 35 in |
| Barrel end | Customer choice |
| Compared on the page | very similar to our top-selling 73; Pick it if you like the 73 but want a little more power; A Viper Bats Original, the MD99 takes the 73, tones down its extremes and lengthens its sweet spot, resulting in a more power-oriented 73 (related-items block) |
| Finishes | Finish Style: Gloss Barrel / Gloss Handle; Gloss Barrel / Matte Handle; Gloss Barrel / Unfinished Handle; Matte Barrel / Matte Handle; Matte Barrel / Gloss Handle; Matte Barrel / Unfinished Handle; Unfinished Barrel / Gloss Handle; Unfinished Barrel / Matte Handle; Unfinished Barrel / Unfinished Handle. Barrel Color, Handle Color and Drip Color lists of about 49 named colours and finishes each (Drip Color adds $15.00; full lists on page) |
| Custom options | Cupping (No; Yes); Bat Personalization Options (No; Engraving); Logo Color (22 options incl. You Choose, USA Flag, Police, Firefighter, Tiger colours); Engraving Color (16 options); Color Separator (13 options) |
| Warranty | backed up by our warranty |
| Lead time | Standard Production - 1-2 Weeks; Express Production - 5 Business Days (+$30.00); Priority Production - 3 Business Days (+$60.00) |
| Availability | Made to order |
| Made in | American Made |
| The maker says |
|
| Source | viperbats.com, product page, read 13 Oct 2026 |
Pat's Grade one person's opinion, with the reason
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Evidence public reviews and break reports, with links
Public reviews of Viper Bats are thin. They are gathered by maker; each source says which product or line it covers.
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Public review counts and themes we found for this maker, with links, plus break reports sent in by site users. Where we found nothing public we say so.
- viperbats.comOn the maker's own site, chosen by the maker: AP5 wood bat4.5 of 5, 8 reviewsLiked on the maker's site: good build, finish and custom colors; good feel and pop; quick delivery and good serviceRaised on the maker's site: barrel slimmer than some other brands; swings slower for someone who prefers an end-loaded bat (read it there)
- viperbats.comOn the maker's own site, chosen by the maker: 110 wood bat4.9 of 5, 8 reviewsLiked on the maker's site: good quality for the price; balanced swing with good pop for batting practice; craftsmanship and straight grain; custom paint and lettering; repeat purchases
- viperbats.comOn the maker's own site, chosen by the maker: 423HD wood bat4.8 of 5, 5 reviewsLiked on the maker's site: holds up after mis-hits and jams; good pop; high-density maple felt a bit harder-hitting; color choicesRaised on the maker's site: one reviewer said a different Viper model was not durable enough; one said another model slowed their swing speed (read it there)
- viperbats.comOn the maker's own site, chosen by the maker: 243L wood bat5.0 of 5, 8 reviewsLiked on the maker's site: durability over a season and bats handed down; balance and sound; easy customization site; serviceRaised on the maker's site: one 2019 review said a child's bat broke and needed replacing (reviewer ordered another) (read it there)
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