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.
