HPI Racing 15-Tooth Pinion Gear (1.0 Mod, 5mm Shaft)

Overview

The HPI Racing 15-Tooth Pinion Gear is a precision-cut 1.0 module motor pinion designed for use with 5mm motor shafts. With 15 teeth, this pinion offers slightly more torque-biased gearing compared to a 16T option — ideal for high-grip tracks or aggressive acceleration.

This OEM-quality gear delivers smooth mesh and reliable performance, perfect for fine-tuning your drivetrain ratio.

Key Features

• 15-tooth count
• 1.0 module (1M) pitch
• 5mm motor shaft bore
• Precision-cut teeth for clean mesh
• Genuine HPI Racing OEM

Performance Benefits

• Slightly more torque, slightly less top speed than 16T
• Smooth power transfer
• Long-lasting durability
• Tunable gear ratio option

Usage Notes

Verify proper mesh with the paper-test method during installation. Apply thread-locker to the pinion grub screw and gear grease to the gear teeth.

Technical Specs

• Type: Motor Pinion Gear
• Tooth Count: 15T
• Module: 1.0 (1M)
• Shaft Bore: 5mm
• Quantity: 1 piece

Fitment

• 1/8 scale RC vehicles using 1M pinions on 5mm motor shafts
• HPI Vorza Flux, Trophy Flux Series, Savage Flux compatible motors

What's Included

• (1) HPI Racing 15T 1M Pinion Gear with 5mm bore

Summary

A precision-cut 15T 1.0M pinion gear for 1/8 scale brushless setups — slightly more torque-biased gearing for fine-tuning.