Product Details
Most long-range pilots default to 7-inch or jump straight to 10-inch. The MARK4 V2 8 inch FPV carbon fiber frame sits in a sweet spot that a lot of people overlook — more prop efficiency and payload room than 7-inch, but without the weight and bulk penalty of 10-inch. If your typical flight is 3–8km out and you’re carrying a camera plus GPS, 8-inch props give you the best thrust-per-watt in the MARK4 lineup. The 368mm wheelbase isn’t just a stretched 7-inch. The arm length and stack spacing were designed around 8-inch prop clearance from the start.
6mm arms on an 8-inch frame might raise eyebrows when you see the 10-inch version gets 7mm. Here’s why 6mm is the right call: 8-inch props generate less torque than 10-inch, so the arm doesn’t need the extra millimeter to stay rigid. Going 7mm here would add roughly 25g for no measurable improvement in flight performance — that’s weight you could spend on a bigger battery instead. The 6mm 3K T300 arms are cut from our own carbon fiber sheet in-house, so the material consistency is the same on every batch. No trading-company lottery where the laminate quality changes depending on which supplier was cheapest that week.
The plate stack mirrors the proven 7-inch layout: 3.0mm bottom and middle plates handle the structural loads, 2.0mm top plate saves weight where you don’t need maximum stiffness, and the 2.5mm camera side plates keep your camera mount locked down. On 8-inch builds with 2806 or 2807 motors, even a tiny amount of camera mount flex shows up as micro-jello in your footage. Those 2.5mm side plates are the difference between clean clips and footage you have to stabilize in post.
210g total frame weight. Arm soft mounts come included to eat motor vibration before it reaches your FC. Battery pads, straps, aluminum standoffs, and full stainless steel hardware are in the box. Motor holes fit 16×16mm and 19×19mm, FC mounting works with 20×20mm and 30.5×30.5mm. You can go from unboxing to a flight-ready build in one session.
Specifications
| Property | Value |
|---|---|
| Model | MARK4 V2 8 Inch |
| Wheelbase | 368mm |
| Dimensions | 270 × 325 × 49.2mm |
| Frame Weight | 210g (frame only) |
| Frame Design | H-Type |
| Arm Material | 6mm 3K T300 carbon fiber |
| Bottom / Middle Plate | 3.0mm 3K carbon fiber |
| Top Plate / Brace | 2.0mm 3K carbon fiber |
| Side Plate | 2.0mm 3K carbon fiber |
| Camera Side Plate | 2.5mm 3K carbon fiber |
| Prop Size | 8 inch |
| Motor Mount | 16×16mm / 19×19mm |
| FC Mounting | 20×20mm / 30.5×30.5mm |
| Camera Mount | 19mm micro FPV camera |
Package Includes
- Full set of 3K carbon fiber plates (arms, bottom/middle/top plates, side plates, camera plates)
- Aluminum standoffs
- Stainless steel screws and hardware
- Arm soft mounts (vibration damping)
- Battery pads
- Battery straps
Applications
- Efficiency-first long range — 8-inch props spin slower and move more air per revolution than 7-inch, which means more meters per watt. If your flights are 3–8km out, this 8 inch long range frame gives you the range without the 10-inch weight penalty
- Cinematic camera platform — 2.5mm camera side plates plus a rigid H-type structure mean your footage comes out clean without post-stabilization. Mount your GoPro, focus on the flying, and let the frame handle the vibration
- Aerial mapping — Stable flight characteristics and enough payload room for GPS modules, barometers, and companion computers. The stack has space for complex builds that 7-inch frames can’t accommodate
- Medium-payload missions — Not heavy-lift, but not featherweight either. 6mm arms carry larger batteries and extra electronics without flexing, making this frame a solid choice for sensor-carrying and lightweight delivery prototypes
Why Choose YTCarbon
- Source from the factory, not a middleman. We press our own 3K carbon fiber sheet from raw T300 fiber and CNC cut every arm and plate in the same facility. When you buy this 8 inch carbon fiber frame, you’re dealing with the manufacturer — not a trading company that swaps material suppliers every quarter
- Every hole, every edge, checked. CNC machined with tight tolerances. Internal corners are chamfered because that’s where cracks start on cheap frames. Deburred edges, accurate hole spacing — no stress risers that turn into broken arms after a season of flying
- No MOQ. One frame for your personal build or five hundred for your product line. Same material, same process, same quality control on every unit
- ISO 9001 audited. Our quality system is independently certified. Material Test Reports available on request for your compliance documentation
- Sample before you commit. Buy one frame at cost. Build it, fly it, push it hard. Then place a real order based on experience, not marketing claims
Certifications
Every frame we ship is backed by documented quality credentials. We hold ISO 9001 certification for our quality management system, and our carbon fiber materials carry RoHS and CE compliance — which matters if you’re reselling into the EU or supplying customers who need traceable documentation. Need a copy for your records? Just ask and we’ll send the PDF.
How We Manufacture Your Frame
A lot of frame sellers can’t tell you how their product gets made because they don’t make it — they buy it from a supplier who buys it from another supplier. We’re different. The process below shows what actually happens inside our facility: raw 3K T300 carbon fiber comes in, we lay it up and press it into sheet, then our CNC machines cut every plate and arm to spec. After machining, each part gets a visual and dimensional inspection before it goes into the package.
Frequently Asked Questions
+ What battery setup works best on the MARK4 V2 8 inch FPV carbon fiber frame?
+ Why would I pick 8-inch over 7-inch or 10-inch?
+ Are 6mm arms enough for an 8-inch frame? The 10-inch gets 7mm.
+ How fast can I get a sample order shipped?
+ Do you support OEM branding and custom frame modifications?
Need a Custom 8 Inch Carbon Fiber Frame?
We offer custom arm thickness, laser engraving, colored hardware, and OEM branding. Our engineering team can accommodate any structural change — contact us with your requirements.