pSaito FG-90R3 90cc 4-stroke 3-cyl Star engine PetrolbrThe 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.brbrThis 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.brbrAs 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.brbrKey Features:brIncreased-displacement version of the FG-84R3Dbr2S Li-Po battery compatible ignition provides easy starts and reliable performancebrEngine heat sink for improved cooling and performancebrAmazing 4-stroke sound Saito™ engine soundbrUpdated intake designbrComplete with electronic ignition, mufflers and engine standoffsbrbrSpecs:brDisplacement: 89.99 ccbrApplications: Gasoline 60-70 cc classbrBore: 37.2mm (x3)brStroke: 27.6 mm (x3)brMotor weight: 3161 gbrMuffler weight: 157 gbrIgnition system weight: 258 gbrPractical RPM: 1300-7000brMax RPM on Ground (stationary): 6000-6500brPropeller: 24x10 - 25x12brFuel: Regular gasoline e oil 15-20:1 (volume ratio)brBattery for ignition system: 6-12V with more than 1Ah is recommended (2-3S LiPo or 5S NiMH)brPlug: CM-6/p