Five33 65mm HDZero Race Whoop RTF

Five33 builds each unit by hand in Evan Turner's Maryville, Tennessee shop, on a BetaFPV Air65 II frame around the HDZero AIO5 board and HDZero Eco camera, with HQProp 31mm props, 0702 30000KV motors, and BT2.0 batteries. Everything is standard, off-the-shelf hardware, so spares are cheap and easy to source. Orders come with a choice of four camera angles (30/35/37/40 degrees) and a black or white frame — those variants are camera angles, not motor KV.

"RTF" here means fully built, race-tuned, and test-flown before shipping — it flies well out of the box without DIY tuning — but no battery, radio, or goggles are included. At 18.6g bare it sits at the light end of the digital-whoop class, with 1S race-class agility and low crash energy, and it's aimed at indoor and whoop-track racing rather than outdoor cruising.

Native HDZero video makes it a direct match for HDZero goggles like the BoxPro+: a 720p-class image with the low, fixed latency HDZero is known for, a clear step up from analog whoop video. The Eco is the budget composite-signal camera in the HDZero lineup, so image quality sits below the Lux/nano-class HDZero cameras, and the VTX tops out at 200mW through a linear antenna — fine for indoor racing, with limited range and penetration outdoors.

The built-in ELRS 2.4GHz receiver binds to any ELRS 2.4GHz radio (bind phrase or button via Betaflight, on ELRS v3), but it is SPI-based: its firmware is baked into Betaflight, cannot be updated independently, and there is no blackbox on the F411 MCU. With Betaflight and ELRS developers phasing out SPI+F411 targets, long-term firmware headroom depends on HDZero/HappyModel. The AIO5 board does have a community reputation as one of the tougher 5-in-1 AIOs in a crash.