S664 Standard Waterproof Metal Gear Servo 25T

The Spektrum S664 Standard Waterproof Metal Gear Servo 25T (SPMS664) is a digital, standard-size servo built for dependable control. It combines a 25-tooth output spline with durable metal gears and operates across a high-voltage 6.0–7.4V range. Delivering up to 260 oz-in of torque, the S664 offers strong, precise performance in a compact footprint, with a water-resistant design for added confidence in challenging conditions.

Key Specifications

• Servo type: Digital, standard size
• Output spline: 25-tooth (25T)
• Operating voltage: 6.0–7.4V (HV)
• Torque: 226 oz-in @ 6.0V; 260 oz-in @ 7.4V
• Gears: Metal
• Dimensions (L × W × H): 40 × 20 × 41 mm (1.58" × 0.79" × 1.62")
• Water-resistant: Yes
• Programmable: No

With its robust metal gear train and HV capability, the Spektrum S664 is a strong option when you need a standard-size, digital 25T servo that balances torque, durability, and compact dimensions.