One of the easiest and most fun builds yet!
SirenA F5
MSRP $130.00
Direct orders from our website are $95
Once the product is available through regional distributors, the retail price will be standardized at $130
Once the product is available through regional distributors, the retail price will be standardized at $130
Weight 114.9g* Wheel Base 225mm Frame Type Sqaushed X Stack Mounting 30x30mm (M3) Cam Support DJI / Walksnail / HDZero Motor Mounting 16x16mm (M3) Vtx Mounting 20x20(M2)/ 25.5x25.5(M2) Support Prop Max 5.1inch Standoff Height 23/26mm
*The theoretical value may deviate slightly from the actual value
Carbon Fiber
- Top Plate 2mm x1
- Front Plate 2.5mm x1
- Rear Plate 2mm x1
- Reinforcement Plate 2mm x2
- Lock Plate 4mm x1
- Arm 5mm x4
Hardware
- M3x26 Countersunk -4/pcs
- M3x6 Flat Head -2/pcs
- M3x6 Button Head -6/pcs
- M3x8 Button Head -20/pcs
- M3x12 Countersunk -4/pcs
- M3x14 Countersunk -4/pcs
- M3x16 Countersunk -4/pcs
- M3x23 7075 Standoff - 6/pcs
- M3x26 7075 Standoff - 2/pcs
- Profiled Spacer 3 - 6/pcs
Accessories
- TPU Cam Shell x1
- TPU Front Bumper x1
- TPU Capacitor Mount x1
- TPU Antenna Mount x1
- TPU Action Cam Mount x1
- Rubycon 35v680uF ZLH x3
- ParaCap PCB x1
- M3 Metal Nylock Nut x4
- M3 Rubber Spacer x10
- Battery Pad x1
- Battery Strap x2
* The TPU antenna mount is configured based on the selected VTX system. The default setup supports antennas using a plastic tube mount. A fully enclosed antenna mount is sold separately.
United States & Canada
- ePacket : $10
- DHL Express : $30
Europe
- ePacket : $10
- DHL Express : $30
Australia & New Zealand
- ePacket : $10
- DHL Express : $30
Other Countries
- ePacket : $15
- DHL Express : $30
Shipping Methods
- ePacket — Economy tracked shipping.
- DHL Express — Fast express delivery with full tracking.
Notes
- Select DHL Express for the fastest delivery. One free extra spare arm is included with each frame.
- Shipping methods available may vary by destination.
- If DHL Express is unavailable for your destination, we may use EMS instead.
- All packages are shipped from Taiwan.
For full shipping terms and details, please see our Shipping Policy .
Note: The TPU color has been updated from dark green to light green.
SirenA Series — Not Just for Pros.
Built for Your Next Step into FPV.
SirenA F5 is not a compromise between beginner and professional. It is the configuration most pilots arrive at after removing everything unnecessary.
While the SirenA F35 serves a specific purpose, the SirenA F5 defines the core of FPV. A true 5-inch platform — refined, efficient, and structurally intentional, built to support progression without forcing adaptation.
Every detail is engineered to reduce friction. Clean layout. Logical spacing. Direct assembly. No excess, no workaround, no tolerance for inefficiency. You build it once, and it works as expected.
For those entering FPV, this is not a shortcut, it is the correct starting point.
For experienced pilots, nothing here needs to be justified. The response, the consistency, the durability, they speak for themselves.
SirenA F5
Sale price$95.00 USD
Choose options
SirenA F5
Sale price$95.00 USD
Uncompromising Durability
The 5" Frame You’ve Actually Been Looking For
The SirenA F5 is a high-performance platform engineered for total structural integrity and precision. Its calculated mass provides a solid, "locked-in" momentum that translates into absolute confidence behind the sticks. Built for the hit and refined for the flow, this is the frame that keeps you flying when it matters most.
Pure Power Delivery
Low-ESR Triple Capacitor Matrix
We’ve moved beyond standard filtering. By utilizing a custom QUADMULA parallel PCB, our innovative 3-capacitor array dramatically lowers ESR compared to traditional single-cap setups. This delivers cleaner power to your ESC, guaranteeing maximum stability and silky-smooth flight performance, even under the heaviest throttle loads.
Based on the principle of ESR (Total) ≈ ESR (Single) / 3, distributing the equivalent capacity across three units achieves significantly lower resistance than a single large one.
Reinforced Nose Architecture
SirenA F5 features a reinforced nose section utilizing 2.5mm bottom plate and additional bracing for maximum impact resistance. This design ensures your frame survives those high-speed crashes that would normally snap a bottom plate. Since replacing it is the most time-consuming repair in FPV, we’ve built the head to take the hit so your main chassis doesn't have to.
Complex Engineering, Simple Form
C-Lock T2 Rigid System
At the heart of the SirenA lies our C-Lock T2 technology, a mechanical interlocking system designed to eradicate arm slop and vibration. It ensures the frame remains stiff and responsive, creating a direct, telepathic connection between your stick inputs and the quad’s movement.
Maximize your time in the air
Single-Bolt Quick Swap
Our smart design allows for rapid arm replacement by removing just a single bolt. No need to disassemble your stack or disturb your electronics—get back to flying in seconds, not minutes.
M3 Stack Screw
We prioritize structural rigidity and ease of maintenance over shaving every gram. The SirenA F5 utilizes dedicated M3 stack screws that are completely decoupled from the arm assembly. This independent design allows for rapid arm replacements in the field without ever disturbing your electronics or loosening your stack.
Maximum protection tailored to your lens
Dedicated Cam Shell
We provide dedicated Cam Shells for each supported lens, ensuring a precision fit and superior protection. Anchored by our proprietary PS-2 system, the camera is locked mechanically without compressing the TPU. This prevents material deformation, resulting in a fixation significantly more rigid and reliable than direct screw mounting.
Rock-Solid Mounting & Lens Defense
Integrated Action Base
We expanded the mounting geometry to maximize stability and eliminate camera wobble. This robust base integrates a protective design that directly shields your FPV lens from impacts.
Ample Build Space
We utilized 23mm standoffs to provide a more versatile building experience. This extra clearance comfortably accommodates heatsink-equipped ESCs while making the overall assembly much smoother.
Official STL Files & 3D Print Support
Pick up the official TPU kit from our store, or download the free STL files and print your own protection on demand.
Use the left and right arrow keys to navigate between before and after photos.
F A Q
The SirenA F5 supports DJI O3, DJI O4 Pro, HDZero, Walksnail, and analog video systems.
Select your intended VTX system when ordering. Each option includes the matching Cam Shell, VTX mounting hardware, and a basic tube-style antenna mount.
Switching to a different video system later is simple, only the TPU accessories need to be changed. The carbon frame is identical across all VTX options.
The standard frame kit includes:
- A TPU Cam Shell for the camera, with the matching PS-2 and screws
- A basic TPU antenna mount
- A Front Bumper, with the matching PS-3 and screws
- An Action Camera Mount Base, with the matching PS-3 and screws
Arm Guards are not included in the standard frame kit and must be purchased separately if needed.
PS-2 and PS-3 are QUADMULA’s spacer system, designed to secure TPU accessories more reliably.
They create a proper mounting stop for the screws, preventing the TPU from being crushed or the screws from being left loose due to inconsistent tightening. This ensures that TPU accessories are securely mounted while allowing the screws to be tightened properly.
The standard frame kit includes the PS-2 and PS-3 hardware required for the Cam Shell, Action Camera Mount Base, and Front Bumper.
PS-3 hardware for Arm Guards is not included. If you plan to 3D print and install Arm Guards later, please purchase an additional PS-3 hardware set separately.
Customer Reviews
Overall rating: 4.9 / 5 from 19 reviews.
Build feels amazing, flight characteristics are top notch frame is durable. Please don’t be upset but I have to suggest either making the frame a little more expensive and including the spacers for the tpu feet mounts, or provide a stl of said mounts that do not require the spacers in order to work properly. Thanks again I really do love the frame!
Absolutely the best flying freestyle frame in game. The care and love that goes into the design of these frames is incredible. Not only that, but the quadmula crew is the epitome of fpv is life. I've not dealt with another company that cares anywhere near as much as they do. They helped me design custom tpu to accommodate long range sma antennas on both the A35 and A5. Quadmula till the day I die!!!!
This is the battle tank version of my favourite F5 S2!
QUADMULA MAKES THE BEST FRAMES 100%. The quality and fitment of the parts are perfect. The red one is 8S i got it up to 112mph today. AOS motors with Sequre stack it cruzes At 60% throttle 70mph. The green one is 6S with sequre stack, T-motor F60 pro v 2020KV motors. It is fast. I like the triple capacitor with Tpu mount it makes a good clean capacitor. Thank you QUADMULA! Mike M.
Great camera protection and liking the 3 caps. Flew great on default rates but dialing in the tune a bit now. I wish I could find the stl for the 04 antenna mounts in the promo pics! But this honey-comb-thruster is pretty cool too.
Love it!
Mounting in progress!!! Everything seems so solid! It’s amazing, every little détails have been thought about. It’s my second build and I already love this one, much better. I’ll be back after First flights to tell my impression but I sure it will be great! Love from France 🇫🇷 !!
Absolutely the best frame I’ve had yet
What a wonderful evolution to the Siren series! The SirenA F5 reinforced construction and taller standoffs are a welcome upgrade to an already amazing product. Been flying this quad around and have been loving it. Tuning it has been a pleasure since the frame is so rigid that means minimal filtering is needed. Great quality hardware and the new capacitor array is a thing of beauty for a clean build!
The quality was definitely stepped up with this Siren A F5. M3 stack screws optimized frame components and top quality carbon fiber is going to make for an awesome flight experience. Still waiting on some custom prints but that’s in transit. Thank you Quafmula for this incredible evolution from an already amazing platform. Siren A F5 for the win.
Been flying quadmula for several years now and ive always loved the thought and care in the design of them and the new Af5 is the best yet love the triple cap setup and the little extra weight doesn't change the way it flies or tunes!
Top notch quality. I mean TOP NOTCH! The only improvement would be to include a short set of assembly instructions.
This is my 6th Quadmula SirenA F5 build, and it still delivers every time. Clean design, super durable, and flies smooth with a locked-in feel. Minimal tuning—just arm and rip. Definitely my go-to freestyle frame.
I've built a few Siren F5 S2s before as bando bashers so I was curious to see what the new SirenA F5 brings to the table. The new design has brought extra strength to the overall structure - new front lower plate for added protection, upgraded M3 screws to the stack mounting, and a taller 23mm stack height making it much comfier to fit components without having to squeezer everything in. What was already my favourite frame has become event better!
Made a nice 5 inch build. I am impressed.
Amazing build quality. You guys never disappoint. Thank you.
Frame and spare parts came in fast. Nice quality and beautifully engineered. Worth every penny.
First build and no regrets. Roomy enough for comfortable build and to open back up and solder in gps. Loving the performance.