M-Parts Hub Brake Drum 12-1/4x3-3/8\" 10K GD 13G Trailer Axle 9-123 8-415 10,000# For Sale

10K General Duty Hub & Drum Assembly — Post-2009
Part Number: RP8-430-05

This listing is for a hub & drum assembly only for Dexter 10K General Duty (D100G) axles manufactured after 2009. It also fits many Lippert 10K General Duty axles manufactured after 2020.

This is a two-piece hub & drum assembly with pre-installed races. Bearings, seals, and oil cap are NOT included. These items must be purchased separately or as a bundle.

Need the complete kit with bearings, seal, and oil cap?
You can purchase the full RP8-430-05-KIT here: View Complete Hub/Drum Kit (RP8-430-05-KIT) Not Included in This Listing:

• Inner bearing — 25580
• Outer bearing — 387A
• Oil seal — 10-2875-06
• Oil cap — 21-88
• Keep nuts, shims, washers, or spindle hardware

Features

• Replacement hub & drum for Dexter post-2009 10K General Duty (D100G) axles
• Fits many Lippert (LCI) post-2020 10K General Duty axles
• Two-piece hub/drum with pre-installed races
• 5/8\" wheel studs — 8×6.5\" bolt pattern
• For 12.25\" × 3.375\" brake assemblies
• Industry-standard American-made pattern (per MAT specification)

Specifications Drum Size 12.25\" × 3.375\" Hub Component RP8-430-03 (4.75\" pilot) Drum Component RP9-123-01 Races Installed 8-430-03 & 9-123 Compatible Inner Bearing 25580 — not included Compatible Outer Bearing 387A — not included Compatible Oil Seal 10-2875-06 — not included Compatible Oil Cap 21-88 — not included Wheel Stud Size 5/8\" Bolt Pattern 8 × 6.5\" Additional Notes

Dexter revised several hub/drum and spindle dimensions in 2009–2010 for the 10K General Duty series. Older Dexter GD hubs, pre-2020 Lippert 10K hubs, and all Dexter 10K Heavy Duty (HD) drums are not interchangeable.Always verify:

• Axle serial number
• Bearing sizes currently installed
• Drum width and brake shoe size
• Pilot diameter and stud size
• Oil cap style and bolt circle

Fitment

• Typically used on post-2009 Dexter 10K General Duty axles
• Common on many 2020+ Lippert 10K General Duty axles
• Multiple variations exist — always verify your measurements

View All Brake Drums