HPI Racing Differential Locker Spool Differential Hub (2pcs) Wheely King (Opt) (ONLINE ORDER ONLY)

Overview

The HPI Racing Spool Differential Locker Hub (2-Pack) is an optional upgrade for the HPI Wheely King that converts the standard differential into a fully-locked spool. With a spool, both axles spin together at all times, delivering maximum traction in straight-line driving and rock crawling.

Spool conversions are popular for monster truck and crawler-style use where positive traction matters more than smooth cornering.

Key Features

• Genuine HPI Racing optional upgrade part
• Locks both axles together (spool)
• Replaces internal differential gears
• Sold as a 2-piece set
• Designed for Wheely King

Performance Benefits

• Maximum straight-line traction
• Eliminates differential slip on uneven terrain
• Ideal for crawling and bashing
• Reduces drivetrain wear in spool applications

Usage Notes

• Spool eliminates differential action — expect tire scrub on tight turns
• Best suited for monster-truck and crawler-style driving
• Pair with appropriate tire compound for your terrain

Technical Specs

• Type: Spool Differential Locker Hub
• Quantity: 2 pieces
• Application: Differential Lock Conversion
• Manufacturer: HPI Racing

What's Included

• (2) HPI Racing Spool Differential Locker Hubs

Fitment

• HPI Wheely King 1/12 scale RC monster truck (optional upgrade)

Summary

Lock down maximum traction on your Wheely King with this optional HPI spool differential conversion.