JR Servo Specifications
| Size mm | Weight gm | Torque (kg.cm) | Speed (S/60o) | Gears | Ballrace | |
| .@ 4.8V | .@ 4.8V | |||||
| ES306 super micro servo 6g | 19.5x11.5x21 | 6 | 0.5 | 0.1 | plastic | no |
| NES-371 Sub Micro Servo, 9g | 21.5x11.5x22 | 9 | 1.3 | 0.23 | plastic | no |
| NES-331 Micro Servo 3.2kg.cm | 30x13x28.5 | 18 | 3.2 | 0.24 | plastic | no |
| E381 ballrace servo | 26x15x33 | 22 | 4.2 | 0.23 | plastic | one |
| NES-577 standard servo | 32.5x19x38.5 | 44 | 3.3 | 0.23 | plastic | no |
| NES -537 Ballrace standard servo | 32.5x19x38.5 | 45 | 3.3 | 0.23 | plastic | one |
| ES539 Ballrace Servo | 32.5x19x38.5 | 38 | 4.8 | 0.23 | plastic | one |
| ES539MG Ballrace Servo w/ metal gears | 32.5x19x38.5 | 41 | 4.8 | 0.23 | metal | one |
| ES579 Ballrace servo w/metal gears | 32.5x19x38.6 | 41 | 8.3 | 0.23 | metal | one |
| E711 Low profile Ballrace servo | 23.5x22.5x44 | 35 | 4.5 | 0.19 | plastic | one |
| E615 Jumbo servo | 53.5x32x63.5 | 145 | 13 | 0.2 | plastic | two |
| NES-810G Hi Speed B/R Tail Rotor servo | 34.5x19x39 | 47 | 2.4 | 0.1 | plastic | one |
| DS361 Digital Micro servo Metal Gears | 30x13x28.5 | 22 | 3.8 | 0.24 | metal | no |
| DS3301 Digital Hi Power wing mount servo | 33x15x33 | 30 | 4 | 0.22 | plastic | two |
| DS3401 Mini servo M/Gear | 26.5x15x33 | 30 | 4.3 | 0.19 | metal | two |
| DS9411 Mid size digital, MG servo | 26.5x19x36 | 49 | 4.3 | 0.21 | metal | two |
| DS811 digital servo | 34.5x19x39 | 44 | 4 | 0.21 | plastic | one |
| DS559 digital servo,metal gears | 32.5x19x38.5 | 47 | 4.8 | 0.23 | metal | one |
| DS8231 Std size, coreless | 34.5x19x39 | 49 | 6.5 | 0.19 | plastic | two |
| DS8425 Std size, Very Hi Power, coreless MG | 34.5x19x39 | 60 | 11 | 0.19 | metal | two |
| DS8455 Std size, Hi Speed, coreless MG | 34.5x19x39 | 60 | 6.5 | 0.1 | metal | two |
| DS8511 Std size, Extreme Hi Power,coreless MG | 34.5x19x39 | 60 | 15 | 0.19 | metal | two |
| NES-8700G Very Hi Speed tail rotor servo | 34.5x19x39 | 60 | 3.5 | 0.1 | metal | two |
| NES-7100 Low Profile wing servo | 26x22.5x4 | 43 | 4.8 | 0.14 | metal | two |
| NES-513 Standard Retract Servo | 33.5x19x39 | 45 | 4.8 | 1.15/160o | plastic | one |
| NES-703 Ballrace retract servo w/metal gears | 23.5x22.5x44 | 38 | 6.7 | 1.36/160o | metal | two |
| NES-713 Ballrace retract servo w/metal gears | 23.5x22.5x45 | 39 | 8 | 1.55/160o | metal | two |