SKU: 27173033871

CISON FL4-175 Flathead Inline 4 Cylinder Four Stroke 9,000rpm RC Water-cooled Gasoline Engine 17.5cc

Sale price$450.00 Regular price$500.00
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Description

CISON FL4-175 Flathead Inline 4 Cylinder Four Stroke 9,000rpm RC Water-cooled Gasoline Engine 17.5ccCISON FL4 175 Flathead Inline 4 Cylinder Four Stroke 9,000 rpm RC Water cooled Gasoline Engine 17. 5cc Shipping update on 2022 10 14: this engine is in stock now, 6pcs for kit version, and 2pcs finished version. hurry up or it will have no stock. any problems please contact service@stirlingkit. com Miniature Engineering Models that Run on Fuel This small silver engine, called FL4 175, is a 17. 5cc water cooled flathead side valved engine that burns

CISON FL4-175 Flathead Inline 4 Cylinder Four Stroke 9,000 rpm RC Water-cooled Gasoline Engine 17.5cc

Shipping update on 2022/10/14:  this engine is in stock now, 6pcs for kit version, and 2pcs finished version. hurry up or it will have no stock. any problems please contact [email protected]

 

 

Miniature Engineering Models that Run on Fuel


This small silver engine, called FL4-175, is a 17.5cc water-cooled flathead side-valved engine that burns gasoline on CDI ignition. A small amount of oil is added to the crankcase for internal lubrication and caster oil is added to the fuel for upper end lubrication. Aluminum CNC precision machining is used to make the main body of the engine. It features bi-metal piston rings made out of cast iron, high-performance hardened cylinder liner, one-piece crankshaft. Sandblasting oxidation on the engine surface makes a good metal texture and sense of mechanical engineering.

As we all know, a flathead engine is also called as a sidevalve engine or valve-in-block engine that is an internal combustion engine with its poppet valves contained within the engine block, instead of in the cylinder head, as in an overhead valve engine. In the past, Sidevalves were widely used internationally by automobile manufactures from the late 1890s until the mid-1950s but were replaced by more efficient overhead valve and overhead camshaft engines. 

To provide an impressive performance, this unique FL4-175 engine features a simple and reliable construction, a compact small size but with large displacement. It's a good combination of retro and modern machinery. 


Long stroke and high torque

the engine is designed with a side valve structure for lower gravity and lighter weight and offers higher torque output based on the long stroke. Having higher torque allows for greater horsepower at lower rpms.


Responsive and powerful

the engine boasts metal stainless steel integrated printing inlet pipes and exhaust pipes and independent single carburetor for easy calibration, more sensitive throttle response, deep and powerful sound.  


Effective and lasting work

the external oil pump is utilized for crankshaft supplement and superior independent lubrication when matched with mini oil filters. The engine is cooled with water cycle for longer operation and lifespan.  


Convenient ignition

the self-developed four-cylinder electronic igniter with a compact size and strong anti-interference makes the engine ignition more stable and more friendly to remote control electronic device users.  


Upgrade

the oil bottom shell is reserved for observation window which is modifiable into a transparent window for real-time crankshaft operation observation. The flywheel end is reserved for the installation of simulated automobile mechanical manual clutch for users to upgrade.  


RC compatibility

the lightweight engine is compatible with RC models and is an incredible "heart" for low torque demanding 1/8 and 1/10 scale model crawlers.

 


Collection and gift

the engine makes a perfect addition for machine enthusiasts, engine model aficionados and collectors, an excellent choice for RC oil models and a high-end personalized gift for family and friends.


.Note:

base, CDI igniter, spark plugs, battery and oil filter are not included. buy it here.

i recommend you use the 2S-3S lithium battery (7.4-12V battery). Please use the engine in line with the instructions to avoid damage by improper operation. Please feel free to contact us if you have any questions.  
Buy other accessories here.

Specifications:

.Material: Metal
.Brand: CISON
.Model: FL4-175
.Form: assembly version
.Cylinder Dimensions: 96 x 43mm
.Weight: 1100g
.Displacement: 17.5cc
.Bore: 16.7mm
.Stroke: 20.0mm
.Torque: 1600-9000RPM (or adjusted to lower idle speed)
.Power: 2.5PS
.Lubrication Method: splash lubrication/independent lubrication
.Cooling Method: water cooling
.Ignition Method: self-developed four-cylinder CDI electronic ignition
.Start Method: electric
.Power Supply/Battery: 6-12V / 2-3S lithium battery
.Fuel: gasoline
.Suitable Age: 14+  
.Product Dimensions: 13.5 x 4.3 x 9cm
.Product Weight: 1500g
.Package Dimensions: 20 x 15 x 15cm
.Package Weight: 1700g
.Packing: Graphic Carton

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 27173033871

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Casey
Natrona Heights, US
★★★★★ 4
Great organizer for your kitchen sink
Color: Black
Wonderful for our kitchen sink. It holds exactly what we need. Just wish it was a little bigger. Other than that, it looks fantastic and keeps what we need close by.
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Reviewed in the United States on December 17, 2025
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Amazon Customer
Louisville, US
★★★★★ 5
Very happy with this!
Color: Black
Good solid quality, fits well in the space I have available and is well thought out for it's purpose. Good value.
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Reviewed in the United States on March 18, 2026
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suzannef
West Palm Beach, US
★★★★★ 5
Ease & attraction on counter.
Color: Black
The best thing I have bought in a while. The stability & the ease of allowing items to dry make it worth the cost.
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Reviewed in the United States on April 19, 2026
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Stephanie Roberts
Omaha, US
★★★★★ 5
Sturdy and practical
Color: Black, Color: Black
Doesn’t take up a lot of space. The basket to hold your brushes can come out. So if you have a shorter brush you can use it without the taller basket. Holds my hand soap and dish soap with extra room if needed. Has a little shelf on the front that I put my straw cleaning brush. The bottom dish comes out for easy cleaning and catching water drips. It’s sturdy and pretty cute.
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Reviewed in the United States on June 19, 2025
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Cgreen
Phoenix, US
★★★★★ 5
Best organizer with a water spout to keep them counter dry!
Color: Black - 9.25″, Color: Black - 9.25″
I am thoroughly impressed with this product. I tried a product that goes over the middle of the sink and it blocked everything off and would always fall off in a funny ways. I had no room for my pots and pans and started getting irritated with it. This is up and out of the way has a little spicket to drain off the water and as you can see I got all of my sponge and soaps in the same spot which is wonderful cleaned off my counter beautifully. I chose the color black to blend in with my black countertop and also to look nice and clean on the counter. One of the best organizers I have ever found for a countertop. It's sturdy metal so far seems rust resistant, but I haven't had it long enough to know for sure. Mobilize easily to clean. Fabulous little sink caddy. I highly recommend to those of you that like to be organized and keep your counter nice and dry, and still arrange things so that it can be out of the way.
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Reviewed in the United States on April 13, 2026

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