Description
ERA Mini - The World Opens Up
That gap between the staircase railings? Too tight on a 5-inch. At 3.5 inches, it's your warm-up pack. FPV feels different when you're this small and this durable. Every gap becomes easier. Every line becomes possible.
Full ERA, Compressed
This isn't a stripped-down mini version. It's the complete ERA design philosophy: proven camera protection, compressed X geometry, split deck construction. Scaled to 3.5 inches with zero compromises. Everything that made ERA work, tightened up.
Camera Protection That Actually Works
Our nylon polymer camera cage absorbs impact energy instead of transferring it. While CNC aluminum looks tough, it transmits shock directly to your fpv camera. The polymer flexes, bounces back, and takes the hit so your camera doesn't. We've yet to see a single cage fail beyond usability. They get damaged over time, but they stay functional. Crash after crash after crash.
Built Like a Shrunken 5-Inch
Around 300g AUW fully built. Light enough for precision, heavy enough for momentum. The compressed X geometry that made ERA responsive feels even tighter at this scale. We describe it as a "mini 5-inch": same authority, smaller package.
Bonus: With arms this short, zero props in frame on O4 Pro. Clean footage, every flight.
Hardware You'd Spec Yourself
We build what we fly. That means T700/T800 carbon mix. 12.9 hardened YFS screws that won't strip. 7075 aluminum standoffs that won't bend. 22mm deck height (up from ERA's 20mm) for easier installation without sacrificing rigidity.
Small detail that matters: TPU strap holder locks your battery straps in place between packs. No more loose straps slipping during swaps.
Choose Your Version
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ERA 3.5" Mini Frame Kit - Analog and DJI V1/O3/O4 Pro CNC Kit
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ERA 3.5" Mini Frame Kit O4 - DJI O4 Pro with standard camera housing
Coming 2026: The 3.5-Inch Standard
We didn't just build a frame. We partnered with T-Motor and Gemfan to make 3.5-inch freestyle work the way 5-inch works.
T-Hobby × it's FPV 1604.5 Motors
Proven bell design, but with a brand new 3mm shaft. The scaled-down equivalent of proper 5-inch motors. Lighter than 1604 designs with oversized shafts, more durable than T-mount alternatives. No C-clip to swap bells, just a small M2 screw. Prop swaps feel like 5-inch again.
Gemfan Custom 3.5" Props
3mm shaft hole, a purpose-built prop for this motor standard.
Our goal: establish the new 3.5-inch standard. We hope other manufacturers adopt these specs so 3.5-inch freestyle becomes genuinely viable, not a compromise.
Before You Order
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Not included: ELRS antenna holder, action cam mounts, electronics
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International orders: Price excludes VAT/tax for customers outside the EU
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⚠️ O4 Pro 7075 CNC Conversion Kit owners: If you've converted your O4 to standard form factor with our 7075 CNC Conversion Kit, you need the standard 3.5" Frame Kit, not this one. ERA Mini O4 fits stock O4 Pro plastic housing only.
What You're Getting
A frame that won't break in normal freestyle. Camera protection that actually protects. Hardware that won't strip, bend, or fail. A build experience that doesn't fight you. A quad that flies like it should.
Developed by pilots who crash, rebuild, and fly the next day. Every detail comes from real sessions, real crashes, real frustration with how things used
Features
