Big 3 Upgrade Kits – Side Post Battery

Product Improvement – All Kits Now Include Translucent Black Ground Cables!

Big 3 Upgrade Kit Specifics

As with all of out kits, our Big 3 Upgrade Kits include the very best components available. Rest assured, this is NOT three chunks of welding cable in a Ziploc® baggie! Each kit is incredibly well thought out and installation is a breeze. No crimping or soldering required!

The Best Cable

We use the very best cable we can get our hands on – our own!  It meets full American Wire Gauge (AWG) specification, is Pure Oxygen Free Copper (OFC), and tinned for corrosion resistance. Other companies use Copper Clad Aluminum (CCA) cable in an effort to reduce cost. CCA has 30-40% greater resistance per foot than OFC, so while it may be cheaper, it also comes at the expense of performance.

Battery CableSpecifically, our OFC cable has the following strand count:

  • 2/0 AWG Cable – 5,929 strands!
  • 1/0 AWG Cable – 4,704 strands!
  • 2 AWG Cable – 2,989 strands!
  • 8 AWG Cable – 735 strands!

The fine-strand construction and soft jacket offer excellent flexibility, far superior to standard battery cable and better than the best welding cable!

The Best Parts

We custom assemble all cables in house, and building the best cable requires the best parts. All eyelets used in the construction of our cables are the heaviest duty in the industry. They have up to twice as much copper weight as standard copper lugs, longer barrels, which permit better crimping, and are tin-plated to resist corrosion. These are simply the best quality eyelets we can find and they are ideal for high current applications!

Standard Copper Eyelet vs. Thick Tinned Eyelet
Standard Copper Eyelet vs. Thick Tinned Eyelet
Standard Copper Eyelet vs. Thick Tinned Eyelet (Standing)
Standard Copper Eyelet vs. Thick Tinned Eyelet
Installed Eyelet with Super-Thick Adhesive-Lined Heat Shrink
Installed Eyelet with Super-Thick Adhesive-Lined Heat Shrink
All eyelets are installed via our crimping press and insulated with the thickest adhesive lined heat shrink available. This super-thick adhesive-lined heat shrink tubing prevents battery acid or oxidation from entering the connection itself.

Additionally, we include a complete assortment of Grade 5 Hardware with each kit. You’ll have every single thing you need to get the job done right the first time. We guarantee it!

Step By Step Full Color Instructions

Each kit includes complete step by step instructions in full color so that your installation goes smoothly! They’re super easy to install and require only common hand tools to install them.

Our 3 foot Top Post Big 3 Upgrade Kit includes

Big 3 Upgrade Kit - Side Post Batteries
Big 3 Upgrade Kit – Side Post Batteries
  • (1) 3 foot long Translucent RED Upgraded Charge Lead*
  • (1) 3 foot long Translucent BLACK Alternator Ground Lead*
  • (1) 2.5 foot long Translucent BLACK Battery Ground Upgrade Lead*
  • (1) 2 foot 8 AWG Translucent BLACK Accessory Ground Upgrade Lead
  • (1) Pair Military Style Battery Clamps
  • (1) Pair Rockford Fosgate platinum plated ring terminals (to connect the stock battery cables to the new clamps without special tools)
  • Ring Boot – to insulate the charge lead connection at the alternator

* Either 1/0 AWG or 2 AWG depending on the kit you choose

General Hardware

Big 3 Upgrade Side Post Battery Kit Installed
Note: the top red 1/0 AWG power cable pictured is the amp power wire and is shown for illustrative purposes only.

Each kit includes a complete assortment of Grade 5 hardware and cable ties required to complete the installation, including zinc-plated internal/external star washers for all ground connections. Also included is a complete assortment of hardware that permits easy connection to any alternator, as we include both SAE and metric bolts. You absolutely, positively will not have to run to the hardware store to install this kit!

The 4 foot kit includes an additional foot of length for each of the two underlined cables listed above. The 5 foot kit includes an additional two feet of length for each of these cables.

Which Kit Do You Need?

We offer Big 3 Upgrade Kits for Top Post Batteries in 1/0 AWG and 2 AWG in three different lengths.

  • 2 AWG Kits are suitable for alternators making up to 225A!
  • 1/0 AWG Kits are suitable for alternators making up to 300A!
  • 2/0 AWG Kits are suitable for alternators making over 300A!

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