



SirenA F35
Weight 74g* Wheel Base 167mm Frame Type Sqaushed X Stack Mounting 20x20mm (M2/M3) Cam Support DJI / Walksnail Motor Mounting 12x12mm (M2) Vtx Mounting 20x20(M2)/ 25.5x25.5(M2) Support Prop Max 3.6inch Standoff Height 20/26mm
*The theoretical value may deviate slightly from the actual value
Carbon Fiber
- Top Plate 2mm x1
- Front Plate 2mm x1
- Rear Plate 2mm x1
- Lock Plate 2mm x1
- Arm 4mm x4
Hardware
- M2x6 Button Head -16/pcs
- M2x23 Countersunk -4/pcs
- M3x6 Flat Head -2/pcs
- M3x6 Button Head -10/pcs
- M3x10 Countersunk -4/pcs
- M3x13 Countersunk -6/pcs
- M3x14 Countersunk -4/pcs
- M3x20 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 M2 Nut x4
- TPU Action Cam Mount x1
- Rubycon 35v390uF ZLH x3
- ParaCap PCB x1
- HSA Tube x1
- M2 Rubber Spacer x20
- Battery Pad x1
- Battery Strap x2
- Backup Screw Pack x1
* 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.
Flight Controller 20x20 M2/M3 Mounting Hole ESC At least 30A 4-6S Motor 4S: 3500-4000kv
6S: 2400-3000kv
with 12x12mm mount base Prop 3.5" - 3.6" Battery 4S 850-1200mah
6S 750-1050mah
United States & Canada
- ePacket: $10
- DHL: $30
Europe
Germany, France, UK, Norway, Sweden, Denmark, Netherlands, Spain
- ePacket: $10
- DHL: $30
Australia & New Zealand
- ePacket: $10
- DHL: $30
Other Countries
- ePacket: $15
- DHL: $30
Notes
- Select DHL Express for the fastest delivery and a free extra spare arm per frame included.
- In some regions, DHL may not be available. We will automatically switch to EMS instead.
For more detailed information click here
Die SirenA F35 schlägt ein neues Kapitel in unserer 3,5"-Produktpalette auf. Die ursprüngliche Siren F35 hat sich bereits einen festen Platz am Himmel erobert, doch wir haben einen klaren Wunsch aus der Community vernommen: Ihr wolltet ein Modell, das selbst extremste Bedingungen übersteht. Ihr habt nach einem Rahmen gefragt, der die Grenzen der Haltbarkeit neu definiert, ohne dabei seine Charakteristik zu verlieren. Die SirenA-Serie ist unsere Antwort.
Wir haben die gesamte Struktur neu konzipiert und sie aus QUADMULAs charakteristischer, hochwertiger Kohlefaser gefertigt. Dieses Premium-Material, bekannt für seine außergewöhnliche Steifigkeit und Langlebigkeit, bildet das Rückgrat des Rahmens. Darüber hinaus wurde die Chassis-Geometrie sorgfältig überarbeitet, um als physische Stoßdämpfer zu fungieren und Ihre Elektronik im Schadensfall zu schützen.
Für die Elektronik haben wir eine neuartige Dreifach-Kondensatormatrix für die 3,5"-Klasse entwickelt. Durch die Entwicklung einer speziell angefertigten Leiterplatte haben wir die Installation vereinfacht und gewährleisten eine optimale Stromversorgung Ihres Systems. Diese komplexe Designentscheidung haben wir getroffen, um Ihnen den Aufbau so einfach wie möglich zu gestalten.
Auch beim Schutz haben wir einen neuen Ansatz gewählt. Anstelle eines starren Aluminiumkäfigs haben wir eine neue TPU-Philosophie mit speziellen Kameraschalen entwickelt. Wir sind überzeugt, dass dies eine hervorragende Stoßdämpfung für Ihr Objektiv bietet und Ihnen gleichzeitig die kreative Freiheit gibt, Farben auszutauschen und Ihr Rig individuell anzupassen – etwas, das Metall einfach nicht bieten kann.
Unzählige Stunden an Design, Tests und Optimierung flossen in diesen Rahmen. Wir kämpften um jedes Gramm, um sicherzustellen, dass trotz erhöhter Stabilität die Flugleistung nicht beeinträchtigt wird.
Dies ist ein echter Bando-Rahmen, der die Wendigkeit einer leichten Konstruktion beibehält.
Erleben Sie absolute Langlebigkeit ohne Kompromisse.

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Uncompromising Durability
Built for Abuse: The Heavy-Duty 3.5”
Engineered for pilots who exist at the ragged edge of control. Featuring rigid 4mm arms and a heavily reinforced chassis, the SirenA prioritizes survival above all else. The calculated structural weight adds a sense of inertia and confidence to every maneuver, ensuring you keep flying while others are walking home.

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.

Steel & 7075 Aluminum Backbone
Full M3 Architecture
We took a zero-compromise approach to the primary chassis. By utilizing substantial M3 hardware and robust 7075 standoffs for the main structure, we achieved a level of torsional rigidity and impact resistance rarely seen in this class. It’s calculated overkill, ensuring your frame remains rock-solid flight after flight.

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.

HSA Lightweight System
Introducing our proprietary Hybrid Screw Assembly (HSA). By pairing custom YFS M2 hardware with a specialized vibration-damping sleeve, this system offers full M2 and M3 stack compatibility. This smart design slashes weight by 60% compared to standard M3 bolts without sacrificing structural security.

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.
3D Print Ready Official STL Support
We designed a comprehensive protection suite for this frame. Pick up the official TPU kit from our store, or access the free file library to print replacements on demand.


F A Q
We chose to exclude the 9x9mm pattern for two critical reasons:
- Durability First: Supporting dual mounting patterns requires removing excessive material from the arm ends, creating stress risers that weaken the carbon. The single 12x12mm layout keeps the arm tip solid and robust.
- Performance Consistency: 9x9mm motors (commonly 1404 size) are generally underpowered for the SirenA's reinforced chassis. We designed this frame to be flown with high-torque motors that utilize the 12x12mm standard, ensuring you get the locked-in flight experience we intended.
The SirenA 3.5” was engineered with a singular focus: Bando and Aggressive Freestyle. To achieve the structural integrity required for this level of abuse, we prioritized absolute durability over ultralight metrics.
While we have optimized the weight as much as possible, the reinforced nature of the SirenA makes a sub-250g AUW virtually impossible without severely compromising component selection. Forcing a sub-250g build on this frame would result in an unbalanced setup and a poor flight experience.
Choose the right tool for the job:
- If a strict Sub-250g limit is your priority, please choose our standard Siren Series.
- If you demand a tank that survives the hardest hits, the SirenA is for you.