SKU: 3333106270

Saito FG-90r3

Sale price$1124.55 Regular price$1249.50
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Ships within 48 hours · Estimated delivery Jul 27 - Aug 1

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Description

Saito FG-90r3The Saito FG 90R3 engine is an updated version of the FG 84R3D. The displacement has been increased while the physical dimensions remain the same. This provides a modest increase in power and makes it a drop in replacement for the FG 84R3D. This engine is a scale modelers delight, delivering the incredible sound and smooth reliability that Saito has built their reputation on. Above and beyond the advantages of a 4 stroke gasoline operation, this is

The Saito™ FG-90R3 engine is an updated version of the FG-84R3D. The displacement has been increased while the physical dimensions remain the same. This provides a modest increase in power and makes it a drop-in replacement for the FG-84R3D.

This engine is a scale-modelers delight, delivering the incredible sound and smooth reliability that Saito has built their reputation on. Above and beyond the advantages of a 4-stroke gasoline operation, this is the engine for those who like to run clean and efficient engines. Accompanied by Saito power and precision craftsmanship, the distinguished look and sweet sound, this is the engine many of you have been waiting for. This engine provides easy starts and reliable performance due to the 2S Li-Po-compatible electronic ignition. The Walbro carburetor features a rotating barrel specially made for 4-stroke engines, ensuring reliable fuel feed and outstanding performance at any attitude. An engine heat sink provides better cooling and performance in demanding conditions. Supplied complete with mufflers, engine mount, and electronic ignition.

As an expert in reliable 4-stroke engines, Saito engineers spend years developing the best-built 4-stroke gasoline engines. The power-to-weight ratio of a Saito engine creates a one-of-a-kind flying experience. For serious modelers, the FG-90R3 is here with the quality, sound and precision craftsmanship Saito is known for.

Optional (and recommended!). The precision crafted Saito 90r3 Exhaust Ring is a huge improvement on the stock flexible pipes. Makes for an easy & tidy installation and superb radial exhaust note!

Recommended models - the Seagull Giant Corsair and Phoenix Giant Waco are sitters for the big Saito!

Specifications:

  • Bore: ø37.2mm x 3
  • Power: 6.0hp
  • Static Thrust: 11.8kg 
  • Stroke: 27.6mm x 3
  • Stroke Volume: 89.99cc
  • Weight (Approx): Body - 3161g | Muffler - 157g | Ignition System - 250g | Engine Mount - 64g
  • Practical Speed: Approx 1,300 ~ 7,00rpm
  • Recommended Prop: 24 x 12" or 25 x 10"
  • Fuel: Petrol/Gasoline = 20:1 (Volume Ratio)
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • 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]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 3333106270

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Rusted Junk Garage
Los Angeles, US
★★★★★ 5
Keeps the lawn equipment happy.
Size: 16 Fl Oz (Pack of 1), Style: Individual
I use this product in my lawn equipment to keep the carburetors clean.
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Reviewed in the United States on December 23, 2025
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Fred C
Draper, US
★★★★★ 5
I use it on every fill up keeps the motor running smooth
Size: 16 Fl Oz (Pack of 1), Style: Individual
Best stuff on the market and fast delivery
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Reviewed in the United States on November 6, 2025
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Amazon Customer
Carnegie, US
★★★★★ 5
Does what it says
Size: 16 Fl Oz (Pack of 1), Style: Individual
Have a JD 280 and it was not running well at all. Surging, not running good overall, where as previously it was. I used this and after a few hours of running, it cleared up very well and runs like a "Deere" now. Product line is still, one of the best out there. Bought again for my chain saw and use it in my weed wacker too.
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Reviewed in the United States on July 7, 2025
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M. Chulick
Battle Creek, US
★★★★★ 4
Delivered quickly
Size: 16 Fl Oz (Pack of 1), Style: Individual
Just trying to keep my small engines running with this awful California fuel
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Reviewed in the United States on December 4, 2025
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Shopper scott
Boise, US
★★★★★ 5
Good buy
Fit great. I have a toro 7.25 Brigs & Stratton 21 icnh rececyler. Mower started up great
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Reviewed in the United States on May 8, 2026

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