Parts/Chassis & structure/Battery & electronics mounts/Traxxas Battery Expansion Hold Down Retainer Kit
Traxxas Battery Expansion Hold Down Retainer Kit
Traxxas

Traxxas Battery Expansion Hold Down Retainer Kit

Part # TRA5827X3.9(7)
Where to buy
$6.00
AMain Hobbies
Seen Oct 12, 2026
$6.00Buy
Prices are as last seen at the store; stock is not tracked.

About this part

This is an optional Traxxas Battery Hold Down Retainer. This extended battery strap for the Slash and Slash 4x4 allows the use of LiPo packs up to 42mm tall in the stock battery tray. Package includes the battery strap, battery strap retainer, battery post, foam spacer and an angled body clip.

Reviews3.9 · 7 reviews

AnonymousVerified owneron Traxxas Battery Expansion Hold Down Retainer Kit

Super easy to install and extends your options of battery sizes by a lot. Can be used with the stock battery brace to support your standard 2S Lipo and NIMH batteries. If you want to step up to something bigger simply use the supplied battery brace and insert it into the second tier of holes. The pole in which you place the pin is also much taller and has multiple holes obviously so you can maintain a level brace over the battery.

2 found this helpful
AnonymousVerified owneron Traxxas Battery Expansion Hold Down Retainer Kit

Very fast delivery. Great spare part! Works flawlessly.

1 found this helpful
James HoesmanVerified owneron Traxxas Battery Expansion Hold Down Retainer Kit

Good setup, holds batts in place and allows you to tune battery weight distribution.

Anthony WoodruffVerified owneron Traxxas Battery Expansion Hold Down Retainer Kit

Allows you to run huge batteries the the slash HCG, the 6400mah Traxxas one stay put and get a ton of run time now.

Wilbert JonesVerified owneron Traxxas Battery Expansion Hold Down Retainer Kit

This product is not compatible with the Traxxas rally as stated.

What reviewers say

Reviewers largely praise the kit as easy to install and useful for accommodating larger or different battery sizes, including 2S LiPo and NiMH packs, with the second tier of holes allowing a step up. Several note it holds batteries securely and allows battery weight distribution tuning. Two reviewers report it is not compatible with the 4WD Slash or the Traxxas Rally, contrary to the listing, so compatibility depends on the vehicle. One reviewer reports delivery was fast.

  • + Easy to install
  • + Holds batteries securely
  • + Accommodates larger battery packs
  • + Allows battery weight distribution tuning
  • − Not compatible with 4WD Slash
  • − Not compatible with Traxxas Rally
  • − Compatibility claims differ from listing
Summary generated from the reviews above.

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