The Fully Cowled Mini 4WD (フルカウルミニ四駆, Furukauru Mini Yonku) series is a line-up of Mini 4WD cars introduced by Tamiya on September 7, 1994.
The main feature of the cars from this line-up is that they have a fully cowled body shell, which also covers the wheels, creating the low drag design.
With the exceptions of the Beat-Magnum series and Buster-Sonic, most cars featured in this line-up were equipped with small-diameter wheels by default.
The Bakusou Kyoudai Let's & Go! series, including the ongoing Bakusou Kyoudai Let's & Go! Return Racers! manga, featuring cars from this line-up.
All Mini 4WD cars featured in this line-up were designed by Testsuhiro Koshita, the manga author of the Let's & Go! series.

![[19405] Proto-Saber JB (Super-I Chassis) [日本TRF勝利隊: J - 第一代 ~ JB 快刀號 原始戰神JB]](http://chicohobby.com/cdn/shop/products/19405a_{width}x.jpg?v=1674818296)
![[19402] Sonic Saber (Super-I Chassis) [星馬烈 - 第一代 ~ 超音號]](http://chicohobby.com/cdn/shop/products/19402a_{width}x.jpg?v=1674813341)
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![[18105] The Grasshopper Jr. (VZ Chassis) [蝗蟲、蚱蜢、草蜢仔]](http://chicohobby.com/cdn/shop/files/18105a_{width}x.jpg?v=1754357727)