Overview
The HPI Racing 9 x 15mm Cup Joint Set is a genuine OEM replacement for the center gearbox on the Mini King platform. Precision-machined to factory specifications, these cup joints deliver reliable power transfer between the gearbox and driveshaft assemblies.
Sold as a 2-piece set, this kit lets you refresh both center gearbox cups in a single service – ideal for restoring smooth, slop-free drivetrain operation after extended use.
Key Features
- Genuine HPI Racing OEM cup joints
- 9mm x 15mm dimensions
- Designed for the Mini King center gearbox
- Sold as a 2-piece set
- Direct factory fit
Performance Benefits
- Restores smooth, even power transfer through the center gearbox
- Eliminates clunks and slop from worn cup joints
- Maintains consistent throttle and steering feel
- Long-lasting performance under demanding use
Usage Notes
- Refer to the Mini King manual for proper installation orientation
- Apply CV grease to driveshaft pin contact surfaces
- Inspect driveshaft pins and bones for related wear
- Replace as a pair for best results
Technical Specs
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Type: Cup Joint (Center Gearbox)
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Size: 9mm x 15mm
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Quantity: 2 pieces
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Vehicle Application: HPI Mini King
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Manufacturer: HPI Racing
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Part Number: 161218
Fitment
- HPI Mini King (1/18 scale crawler/trail platform)
- Designed specifically for the Mini King center gearbox
- Verify part number against your vehicle's manual prior to ordering
What's Included
- (2) HPI Racing 9 x 15mm Cup Joints
Summary
Keep your Mini King's center drivetrain running smooth with this genuine HPI 9 x 15mm Cup Joint Set – the right OEM replacement for slop-free, reliable power transfer.
