The HW38020455 COMBO-XR10 Pro G3X & V10-G4R-17.5T is a Hobbywing brushless motor and ESC combo designed specifically for competitive 1/10th scale RC racing, often used in stock class racing due to the 17.5T motor specification. Here’s a detailed breakdown:

1. XR10 Pro G3X ESC:

   • The XR10 Pro G3X is an advanced Electronic Speed Controller (ESC) optimized for stock class racing, known for its smooth control and high efficiency.
   • It supports up to 2S LiPo batteries, delivering excellent throttle response and fine-tuned control for high-precision driving.
   • Key features include an adjustable BEC voltage, fully programmable parameters (throttle and brake), and enhanced protection features, including overheat and overload protection.
   • The G3X model specifically provides enhanced firmware options tailored for stock racing, allowing precise timing adjustment and other features that improve performance within stock motor rules.

2. V10 G4R 17.5T Motor:

   • The V10 G4R 17.5T is a brushless, sensored motor designed for smooth performance, optimized for racing within the limitations of stock motor specifications.
   • With a "17.5T" wind count, this motor is ideal for classes that require limited motor windings to ensure fair competition and focus on driver skill.
   • The motor shaft diameter is 3.17 mm (approximately 1/8 inch), a standard size for 1/10th scale motors, compatible with most pinion gears used in this scale.

The HW38020455 Combo is a top choice for RC racers who compete in stock classes, offering a balance of control, precision, and reliable performance. The combination of the XR10 Pro G3X ESC and V10 G4R 17.5T motor provides powerful features tailored to enhance stock racing setups while staying within class regulations.