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
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
The SirenA F35 represents a new chapter for our 3.5" lineup. While the original Siren F35 earned its place in the sky, we heard a distinct call from the community: you wanted something that could survive the impossible. You asked for a frame that pushed the limits of durability without losing its soul. SirenA series is our answer.
We reimagined the entire structure, constructed from QUADMULA’s signature high-grade carbon fiber. Known for its exceptional stiffness and durability, this premium material forms the backbone of the frame. Furthermore, the chassis geometry has been meticulously reshaped to act as physical bumpers, safeguarding your electronics when things go wrong.
For the electronics, we introduced an unprecedented Triple Capacitor Matrix for the 3.5" class. By designing a custom PCB, we’ve taken the hassle out of installation, ensuring your stack receives the cleanest possible power. It’s a complex design choice we made so your build experience could be simple.
We also took a fresh approach to protection. Instead of a rigid aluminum cage, we developed a new TPU philosophy with Dedicated Cam Shells. We believe this offers superior impact absorption for your lens while giving you the creative freedom to swap colors and customize your rig—something metal simply can't offer.
Countless hours of design, testing, and refinement went into this frame. We fought for every gram to ensure that while the strength increased, the flight performance remained uncompromised.
This is a true Bando frame that retains the agility of a lightweight build.
Experience absolute durability without the compromise.
Choose options
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.