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5 out of 5 Customer Rating

Theory XL HD 5" FPV Kit

Item No. BLH9430
Brand Logo
5 out of 5 Customer Rating

Theory XL HD 5" FPV Kit

Item No. BLH9430
This Item is No Longer Available
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Product Details

Key Features

  • Dedicated mounting dimensions and cutouts for all Connex™ ProSight electronics
  • Lightweight frame that does not sacrifice electronic protection or durability
  • Stretched X Design for better flight stability
  • Durable 4mm Carbon Fiber
  • 16mm & 19mm motor mounts
  • 30.5mm PDB & Flight controller mounting dimensions
  • 30mm standoffs offering ample room for electronics
  • Carbon fiber camera mount for Connex™ ProSight camera
  • Main frame cutouts for under-quad battery strap
  • Top plate designed for lightweight durability
  • Frame designed for motor protection
Needed to Complete
  • (1) Flight Controller
  • (4) ESCs
  • (4) Motors
  • (1) Battery
  • (1) Power Distribution Board
  • (4) Propellers
  • (1) 1.5mm Hex Wrench
  • (1) 2mm Hex Wrench
  • (1) Thread lock
  • (1) XT60 or EC3 connector
What's in the box?
  • (1) Blade® Theory™ XL HD Frame Kit
  • (1) Hardware Set (screws & standoffs)


The Blade® Theory™ XL HD Frame Kit builds on the vastly improved Theory™ XL frame kit by being specially designed to host the Connex™ ProSight HD FPV System*. Designated mounting holes for the video transmitter make for an easy and clean installation. The base plate also has screw mounting holes for the Connex™ antenna, giving it a lower profile and improved durability without sacrificing antenna performance. This "stretched X" design delivers flight characteristics that are perfect for FPV racing, increased stability while pitching and flying fast forward. The durable 4mm carbon fiber main plate offers the lightweight durability that every FPV Racer desires. The bottom plate features designated cutouts to run the battery strap below the quad, reinforced arm tips to protect the motors in a crash, and industry standard 30.5mm standoff cutouts to mount nearly any power distribution board or flight controller. The 30mm standoffs that separate the bottom plate from the top also offer plenty of room to mount electronics. Two vertical pieces of carbon fiber create a versatile and durable camera mount that offers impressive tilt for the wide angle Connex™ camera. Motor mounting holes can host a variety of dimensions, from 16mm to 19mm motors. The Theory™ XL HD is the perfect FPV racing frame for those wanting to dive into High Definition racing with the Connex™ ProSight.

Designed for Connex™ Prosight

Designated cutouts and mounting points for the uniquely-dimensioned camera, video transmitter, and antenna, make this frame perfect for anyone looking for a clean, durable and competitive solution for the new Connex™ ProSight FPV system.

Stretched X Design:

Very popular among serious racers, this frame profile is skinnier and longer than a true X frame, making it much more stable in fast forward flight. Additionally, the longer midsection allows you to move the camera lower, while offering more room to mount all components.


Carbon fiber airframe featuring a solid 4mm main plate provides exceptional durability while custom cutouts protect electronics.

Freely Adjustable Camera Tilt

The simple FPV camera mount allows you to choose just how fast you want to go.


Extreme simplicity in design not only keeps the airframe lightweight overall, it makes building a breeze.


Multiple motor mounting holes to fit a variety of motors, 16-19mm motor mount support. The top stack includes convenient cut outs for a variety of video transmitters and cameras.

Please note: Gallery photos show a completed kit for visual purposes. The electronics and accessories are not included.

Product Specs

Main Frame Material
Carbon Fiber
Completion Level
Skill Level
Level 2