Beiter DC Power Extended Run Time 28% Longer Running Time Upgrade your Razor With High Performance Batteries + New Wiring Harness Razor Dirt Quad, Razor Dune Buggy,Razor Ground Force Drifter Go Kart, Razor Ground Force Go Kart, Razor MX350 Dirt Rocket, Razor MX400 Dirt Rocket, Razor Pocket Mod, Razor Pocket Rocket, Razor Sport Mod

These batteries do indeed provide a very nice boost of power when compared to the OEM.However, the updated wiring harness was not shipped with the batteries.Neither was the flashlight.The wiring harness not being shipped was the reason for not getting 5 stars here.Shipping was fast fast. Apparently there is a distribution point within 20 miles so I got the batteries in 2 days.Quick update.The wiring harness and freebie flashlight came in a seperate shipment a few days later.SO ... with super saver shipping, I received this item within 5 business days.Upgraded this to 5 star.

I opened up the battery cover to start replacing the standard battery with the new one and found that I was shipped with a 4 pin battery connector, but the bike uses a 2 pin connector... sort of sucks - now need to figure out where to find this new connector!!! Disappointed...

I bought it as an alternative to pay full price at the quad official website and is working fine with the kid's quad bike so far.

Wont hold a charge if u go more than 3 weeks without charging z

The battery works great, the wiring harness looks a little less professional than the one in the bike, but it works great.

First, it took a while to receive it!Once it finally arrived - Battery dud not work and now I can't return it!It did look new, but it's useless!!!

I ordered batteries for my son's dirt quad from Rhino on amazon for his Christmas present. I got them and installed them and the batteries are no good, they won't hold a charge. Dissatisfied with this product