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Releasing March 26, 2025
4-Site 3D FF (Flat Foamy) 800mm PNP
Item No.
E-flite -
EFL02975
$239.99
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This product may require additional items in order to work out of the box. See below for required items that may be needed to complete.
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EFL02975
11.1V 850mAh 3S 30C Smart G2 LiPo Battery: IC2
SPMX8503S30
In Stock
$26.99
Price reduced from
$29.99
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EFL02975
11.1V 600mAh 3S 50C LiPo Battery: IC2
SPMX6003SIC2
In Stock
$25.99
EFL02975
3S 11.1V 800mAh 50C Li-Po; JST-RCY
SPMX8003SJ50
In Stock
$24.99
EFL02975
14.8V 2200mAh 4S 50C Smart G2 LiPo Battery: IC3
SPMX224S50
In Stock
$44.99
Price reduced from
$49.99
to
EFL02975
14.8V 3200mAh 4S 30C Smart LiPo Battery: IC3
SPMX32004S30
In Stock
$65.99
EFL02975
14.8V 3200mAh 4S 50C Smart G2 LiPo Battery: IC3
SPMX324S50
In Stock
$71.99
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EFL02975
S155 55W AC G2 Smart Charger
SPMXC2050
In Stock
$65.99
EFL02975
S1100 G2 1x100W AC Smart Charger
SPMXC2080
Next Shipment April 2025
$109.99
EFL02975
S250 AC 2x50W Smart Charger
SPMXC2060
Next Shipment Date Unknown
$129.99
EFL02975
S1200 G2 AC 1x200W Smart Charger
SPMXC2020
In Stock
$164.99
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EFL02975
NX7e+ 14-Channel DSMX Transmitter Only
SPMR7110
In Stock
$329.99
EFL02975
NX8+ 20-Channel DSMX Transmitter Only
SPMR8210
In Stock
$429.99
EFL02975
NX10+ 20-Channel DSMX Transmitter Only
SPMR10120
In Stock
$579.99
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EFL02975
AR630+ DSMX 6-Channel AS3X+ & SAFE Receiver
SPM-1030
In Stock
$87.99
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EFL02975
Adapter: IC3 Battery / IC2 Device
SPMXCA320
Next Shipment April 2025
$8.99
EFL02975
Adapter: JST-RCY Battery / IC2 Device
SPMXCA323
In Stock
$8.99
EFL02975
One-Piece Battery Adapter: IC3 Device / IC2 Battery (2)
SPMXCA520
Next Shipment April 2025
$7.99
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$239.99
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E-flite 4-Site 3D FF RC Airplane Introduction
In the early 2000s, "flat foamy" models were extremely popular because they could be scratch-built from foam sheets you could buy in many stores. Today, most foam models are fully molded sport and scale aircraft – and few can match the unique capabilities and performance of flat foam models, especially those designed and built for aerobatic plus 3D flying! The E-flite® 4-Site 3D FF (Flat Foamy) 800mm is based on the original F3P and UMX models and is a biplane alternative to the popular Eratix 3D FF that's taken the market by storm. It's perfect for experienced pilots who already build and fly flat foam models, intermediate pilots who are interested in them but don't want to undertake a complicated build, and less experienced pilots who have always wanted to try but were intimidated by the extra effort and skills required to buy, build and fly such a model. The 4-Site 3D FF is the easiest to fly, most convenient, and best value in a biplane flat foamy model yet!
E-flite 4-Site 3D FF RC Airplane Overview
The E-flite® 4-Site 3D FF (Flat Foamy) 800mm offers the aggressive aerobatic plus smooth sport and slow-flying performance of similar class models – without all the hassles of buying components for and building one! It bolts and snaps together so it can be ready to fly in less time than it takes to charge a battery compared to the glue, tape, and many hours it usually takes to assemble other "flat foamy" aircraft. It's a biplane alternative to the best-selling Eratix 3D FF with a shorter wingspan but more wing area for lower wing loading overall. Its lightweight yet extremely durable EPP airframe is mostly factory-assembled and includes three durable and precise metal-geared servos on all the control surfaces. The factory-installed power system features a 3S-compatible brushless motor matched to a Spektrum Avian Smart ESC compatible with Smart and non-Smart 850–1000mAh batteries. The BNF Basic version is also equipped with an AR630+ receiver to deliver real-time telemetry data, enhanced AS3X+, and optional-use SAFE Select technologies. It's small enough and light enough to be flown indoors in gymnasiums and other similar spaces or outdoors in yards, parks, and sports fields, making it a versatile addition to the hangar for a wide range of pilots!
- The easiest to buy, assemble and fly biplane flat foamy model yet – capable of slow cruising, sport flying, basic and all-out 3D aerobatics
- Specially tuned brushless motor that’s factory-installed and ready for use with popular 3S 850–1000mAh batteries
- 30-amp Spektrum Avian™ Smart Lite ESC provides real-time battery voltage, current, RPM and other data via compatible receivers and transmitters
- Three factory-installed metal geared and digital servos for all control surfaces
- Fast and easy assembly unlike similar class models – no glue or tape required
E-flite 4-Site 3D FF RC Airplane Features
- Extremely durable yet lightweight, high-density EPP airframe with carbon fiber and composite reinforcements
- Factory-finished in a high-contrast, high-visibility trim scheme for excellent orientation
- Landing gear snaps into place for easy installation, removal and replacement
Skill Level 3 – Experience Required
Skill Level 3 aircraft, like this one, are suitable for more experienced RC pilots with the skills to assemble, set up, and fly similar class models. This PNP version requires more experience and skills to assemble and fly than the BNF Basic version because you must install a receiver that does not already include properly tuned AS3X+ and SAFE Select technologies. It's not a suitable first-ever RC aircraft for new pilots or first-ever aerobatic/3D model for low-time RC pilots. You should have the experience and skills necessary to assemble and successfully fly models like the E-flite UMX Ultrix, UMX Timber X, T-28 Trojan 1.1m, Sportix 1.1m, Timber X 1.2m, or other similar class models before attempting to fly the 4-Site 3D FF PNP version.
Plug-N-Play® Completion Level
This Plug-N-Play (PNP) version comes out of the box with a factory-installed power system and servos that are ready to connect to the compatible receiver of your choice (sold separately), plus the transmitter and battery you provide (also sold separately). Simply install the receiver, finish any final assembly, and fly!
Smart Technology
The 4-Site 3D FF is equipped with an exclusive Spektrum Avian Smart Lite ESC that can provide a variety of real-time power system-related telemetry data including motor RPM, current, overall battery voltage, and more – with Smart and non-Smart batteries – via compatible receivers (including the AR630+) and Spektrum AirWare equipped transmitters (including the DX6e and DX8e, DX6 G2/3 and DX8 G2, the DX9, NX6 to 20, iX12 to 20 and others) while you fly.
Uniquely Capable
Like other flat foamy models, the 4-Site 3D FF is capable of slow cruising, smooth sport flying, basic aerobatics, and even aggressive 3D flying—all in the same flight! It offers a truly “mild to wild” flight experience that intermediate to experienced pilots will appreciate, whether indoors in gymnasiums or outdoors in yards, parks, sports fields, and beyond.
High Performance
The factory-installed brushless power system features a specially tuned Spektrum outrunner motor. This power system delivers plenty of thrust for unlimited vertical and 3D performance with 3S 850–1000mAh batteries!
Easy Assembly
Unlike other flat foamy models that are only available as kits without power and control components, the 4-Site 3D FF arrives mostly factory-assembled with the power system, servos, and receiver (BNF Basic version only) installed. All you need to do is finish some quick and easy final bolt/snap-together assembly—without the use of glue, tape, or special tools—and you'll be ready to fly in less time than it takes to charge a battery!
Durable Design
Three factory-installed digital servos with metal gears on all the control surfaces, plus construction with carbon fiber and composite-reinforced, high-density EPP, deliver a lightweight yet stiff and durable airframe. In the unfortunate event you damage any airframe parts or components and can't repair them, a full line of replacement/spare parts is readily available.
Product Specs
Approximate Assembly Time
Less than 1 hour
Battery
Sold Separately
CG (Center of Gravity)
87mm (80-91mm Range)
Charger
Sold Separately
Completion Level
Plug-N-Play
Connector Type
IC2
LiPo Compatibility
3S
Material
EPP
Minimum Required Radio
Full-range 4+ channel transmitter and receiver
Minimum Speed Control
30A Avian Smart Lite
Motor Size
2408-1300Kv
Motor Type
Brushless
Power Type
Electric
Product Length
36.1" (917 mm)
Product Weight
Without Battery: 15.8oz (447g) / With Recommended 3S 850mAh Flight Battery: 18.3oz (519g)
Propeller Size
9 x 4.6
Radio
Sold Separately
Receiver
Sold Separately
Recommended Motor Battery
3S 11.1V 850–1000mAh LiPo battery with IC2 connector
Servos
Included
Skill Level
Level 3
Speed Control
Included
Technology
Smart
Wingspan
31.5" (800 mm)
E-flite 4-Site 3D FF (Flat Foamy) 800mm Video
Get Info From Communities
The E-flite® 4-Site 3D FF is a biplane alternative to the extremely popular Eratix 3D FF that offers the aggressive aerobatic plus smooth sport and slow-flying performance of similar class models – without all the hassles of buying components for and building one because it bolts and snaps together in no time!
Product Details
In The Box
- (1) E-flite 4-Site 3D FF 800mm with:
- (1) Spektrum Brushless Outrunner Motor (installed)
- (1) Spektrum Avian 30-Amp Smart Lite Brushless ESC (installed)
- (3) Spektrum Sub-Micro Digital, Metal-Geared Servos (installed)
- (1) Product Manual
Needed to Complete
- (1) Full-range 4+ channel transmitter and receiver
- (1) 3S 11.1V 850–1000mAh LiPo battery with IC2 connector (or use a suitable IC2 adapter, sold separately)
- (1) Compatible LiPo charger (plus a suitable IC2 adapter/charge lead, including SPMXCA320, sold separately)
Shop Popular Accessories For The 4-Site 3D FF
Club Points Information
Horizon Hobby RC Club:
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