1S/2S Fan Booster — 6V to 8V Cooling Upgrade

The 1S/2S Fan Booster boosts your receiver's 6V output to a constant 8V, giving your fan more cooling power and helping fight motor fade late in your runs. After weeks of testing, we've dialed in this small but effective upgrade for serious racers who don't want to leave performance on the table.

Designed to run off both 1S and 2S vehicles, it plugs directly into your receiver's 6V power using a standard JR servo plug. Your fan will need a JST female connector to connect to the booster.

Compatible with a wide range of top-tier platforms, including the Axon TC10/3, Tamiya TRF421, and X12, this versatile accessory integrates seamlessly into your existing setup.

At just 3.3 grams, it adds virtually no weight to your car while delivering a real cooling boost where it counts.

Installation note: Pay close attention to the positive wire on your fan. You can trace it back from your original plug — the middle wire on the receiver plug is positive. Our booster has a small piece of red heat shrink over the fan connector to mark this. Make sure your fan is rated to handle 8V directly before installing.