HPI Racing 77-Tooth Spur Gear (48 Pitch) for Blitz/E-Firestorm

Overview

The HPI Racing 77-Tooth Spur Gear (48 Pitch) is a precision-cut drivetrain gear designed for the HPI Blitz and E-Firestorm 1/10-scale short-course and stadium trucks. With 77 teeth and 48 pitch, this spur gear delivers a faster gear ratio for higher top speed compared to the stock spur.

Whether replacing a worn spur or fine-tuning your gear ratio for more punch and speed, this OEM-quality gear delivers smooth, accurate mesh and reliable performance.

Key Features

• 77-tooth count, 48 pitch
• Precision-cut teeth for clean mesh
• OEM HPI Racing replacement
• Durable composite construction

Performance Benefits

• Higher top speed compared to stock spur
• Smooth power transfer between motor and drivetrain
• Reduces drivetrain noise and wear
• Long-lasting durability

Usage Notes

Replace whenever the spur shows worn or chipped teeth, or use as a tuning option for higher top speed. Verify proper mesh with the paper-test method during installation. Apply gear grease before reassembly.

Technical Specs

• Type: Spur Gear
• Tooth Count: 77T
• Pitch: 48
• Quantity: 1 piece

Fitment

• HPI Blitz
• HPI E-Firestorm
• HPI Firestorm 10T

What's Included

• (1) HPI Racing 77T 48-Pitch Spur Gear

Summary

Dial in more top-end speed on your Blitz or E-Firestorm with this precision 77T 48-pitch spur gear — a genuine OEM replacement and tuning option.