Moker Universal Battery Hold Down Tray for Optima 34-Series - Billet Aluminum, 3-Point Clamp

The Moker Universal Battery Hold Down is a billet-aluminum battery tray and clamp system that secures Optima-style and many standard car and truck batteries for safe, vibration-resistant mounting.

Whether you are installing an Optima Red, Yellow or Blue Top or replacing an OEM battery in a custom relocation box, this kit supplies a low-profile base, top clamp, and hardware engineered to lock batteries firmly in place. Built from solid billet aluminum with included thread sleeves and heavy-duty all-thread rods, the Moker tray is designed to resist impacts, corrosion and the shaking that comes from daily driving or off-road use.

How does this hold-down adapt to different battery sizes?

The kit is engineered for broad compatibility: it accommodates Optima 34-series formats and many batteries up to the stated dimensions with supplied sleeves. Three adjustable all-thread posts allow positioning around the battery perimeter and height adjustment with supplied nuts. For taller batteries, simply swap in longer all-thread rods (not included) to extend clamp reach.

• Fits Optima sizes: Red Top 34/34R/34/78, Yellow Top D34/D34/78, Blue Top 34M/D34M
• Supports other batteries up to 10.5" L × 6.95" W × 6.7" H with sleeves
• Use longer all-thread rods for batteries taller than 7.4"

Will the tray hold my battery securely under vibration and impact?

Yes—the combination of a sturdy base plate, top clamping plate and three heavy-duty all-thread posts creates a stable clamping geometry that resists movement during vibration and jolts. The billet aluminum construction adds rigidity while resisting deformation from impacts. Properly tightened nuts keep the battery immobilized, reducing terminal stress and rattling.

• Solid billet aluminum resists bending and impact
• Three-point hold-down minimizes rocking and lateral movement
• Durable hardware ensures long-term tension under vibration

What comes in the Moker installation kit and how easy is it to fit?

The package contains everything needed for a secure installation on compatible batteries: one base plate, one top clamp plate, three all-thread rods with nuts, and three thread sleeves. Installation requires basic hand tools and a few minutes to position the sleeves, place the top plate, and tighten the nuts to the correct tension. Because the layout is universal, it works in many stock trays or custom relocation boxes.

• Included: base plate, top plate, 3 all-thread hold-downs, 3 thread sleeves, nuts
• Requires simple tools for mounting and tensioning
• Works in OEM trays, custom mounts, and relocation enclosures

Who is this for: The Moker Universal Battery Hold Down is aimed at vehicle owners, mechanics and hobbyists who need a rugged, adaptable clamping system for Optima-style batteries or other similarly sized cells. It's a good choice for off-road trucks, performance vehicles, marine battery relocation boxes, or anyone replacing a weak OEM bracket and wanting a corrosion-resistant, secure mounting solution that withstands daily driving and rough conditions.