Hobbywing XeRun V10 G5 vs V10 G4R comparison: What's Changed?

Last Updated: June 2026 | Reading Time: 6 minutes | Difficulty: Beginner | Author: Dannyi Chen

Dannyi Chen — RC Enthusiast & Technical Writer at SoarSky. Specializes in brushless motor systems, ESC tuning, and competitive stock class racing performance analysis.

Table of Contents

• I. Overview
• II. What Are the Key Differences?
  • 1. Maximum Output Power
  • 2. Heavy-Load Efficiency
  • 3. Heat Dissipation
  • 4. Center of Gravity
  • 5. Motor Weight
  • 6. Rotor Special Coating
  • 7. Hall Timing Accuracy
  • 8. Hall Sensing Distance
  • 9. KV Rating
• III. Full Spec Comparison Table
• IV. Should You Upgrade from G4R to G5?
• V. Where to Buy
• VI. FAQ
• VII. Further Reading

I. Overview: XeRun V10 G5 vs V10 G4R

The V10 series has long been a staple in competitive RC racing. The G5 builds on the G4R's foundation with meaningful engineering improvements across power, thermal management, and tunability — all while shaving weight off the package.

II. What Are the Key Differences Between G5 and G4R?

1. Maximum Output Power — +3.9%

The G5 delivers 3.9% more maximum output power than the G4R. In a class where milliseconds matter, this translates directly to faster lap times and stronger acceleration out of corners.

2. Heavy-Load Efficiency — +4% Improvement

Under sustained heavy-load conditions, the G5 is more than 4% more efficient than the G4R. Better efficiency means less heat generated, longer run times, and more consistent performance across a full race.

3. Heat Dissipation Hole Area — 15% Larger

Thermal management is critical in competition motors. The G5 features a 15% larger heat dissipation hole area, allowing heat to escape faster and keeping the motor cooler under race conditions.

4. Motor Center of Gravity — Shifted Forward 1.4mm

The G5's center of gravity is shifted 1.4mm forward compared to the G4R. This subtle but deliberate change improves chassis balance and handling feel — a detail that serious racers will appreciate.

5. Motor Weight — G5 is 14g Lighter

The G5 weighs in at 138g, compared to the G4R's 152g. That's a 14g reduction — meaningful for weight-sensitive builds and class regulations.

6. Rotor Special Coating — G5 Only

The G5 features a special rotor coating that the G4R lacks. This coating improves rotor durability and contributes to the motor's efficiency gains.

7. Hall Timing Accuracy — Now Adjustable on G5

One of the most significant upgrades for tuners: the G5 offers adjustable Hall timing accuracy, while the G4R is fixed. This gives racers fine-grained control over power delivery characteristics.

8. Hall Sensing Distance — Also Adjustable on G5

Hall sensing distance is adjustable on the G5 (fixed on the G4R), opening up additional tuning possibilities for different track conditions and driving styles.

9. KV Rating — G5: 4050KV vs G4R: 4100KV

The G5 runs at 4050KV versus the G4R's 4100KV. The slightly lower KV on the G5 is consistent with its efficiency-first design philosophy — more torque, less wasted energy.

III. Full Spec Comparison Table

IV. Should You Upgrade from G4R to G5?

If you're racing competitively and looking for every legal advantage, the G5 is a compelling upgrade. The combination of more power, better efficiency, improved cooling, adjustable Hall timing, and lower weight makes it a well-rounded improvement over the G4R in virtually every measurable category.

If you're a casual racer or club-level driver, the G4R remains an excellent motor — but the G5 sets a new benchmark for what a stock-class competition motor can deliver.

V. Where to Buy

Both motors are available at SoarSky RC:

• → Hobbywing XeRun V10 G5 13.5T — Shop Now
• → Hobbywing XeRun V10 G4R 13.5T — Shop Now

VI. Frequently Asked Questions

Q: Is the V10 G5 backward compatible with G4R ESC setups?
A: Yes. The G5 uses the same connector and mounting dimensions, so it works with existing XeRun ESC setups including the XR10 PRO G3/G3X.

Q: Is the 14g weight difference noticeable on track?
A: In weight-sensitive classes or tight spec regulations, yes. It also slightly shifts chassis balance, which some drivers find beneficial.

Q: Do I need the Hobbywing Tunalyzer to use the G5?
A: No, the G5 works out of the box. The Tunalyzer is only needed if you want to adjust Hall timing — which is optional but recommended for competitive tuning.

Q: Is the G5 legal for IFMAR/ROAR stock class?
A: The G5 13.5T is designed for stock class compliance. Always verify with your specific event organizer before racing.

Q: What is the price difference between G5 and G4R?
A: Check current pricing at SoarSky RC — prices may vary. The G5 typically carries a small premium over the G4R reflecting its engineering upgrades.

VII. Further Reading

• Hobbywing XeRun V10 G5 13.5T Full Review
• Flysky AFHDS3 Receiver Buying Guide 2026
• Power HD Servo Buying Guide 2026
• SoarSky Technology Sharing Blog

About SoarSky — A team of RC model and drone enthusiasts dedicated to providing premium transmitter accessories, FPV components, and RC hobby gear. We test every product hands-on and share honest, technical content to help the RC community make better decisions. Learn more at soarskyrc.com/pages/soarsky-about-us.

Copyright: This article is original content by SoarSky. Unauthorized reproduction is prohibited. | Disclosure: This is an independent review. No sponsorship was received. All opinions are based on hands-on experience and objective spec analysis. | Last Updated: June 2026