Yukon Gear & Axle
Yukon Gear 11-12 RAM 1500/2500 Upper & Lower Ball Joint Kit for AAM 9.25in Front Differential
SKU: Y001 YSPBJ-004HDK2
Description
Part #: YSPBJ-004HDK2
Superior materials lead to superior performance. When you replace and upgrade your failing OE ball joints with a heavy-duty Yukon unit you get a ball joint built to the highest standards of quality and durability. Its housing is CNC-machined from forged SAE 1045 carbon alloy steel and the ball stud is made from induction heat-treated, hot-forged 4140 chromoly. The upper joint's bearing features a carbon steel design that is superior to the OE joint. The lower joint uses military-grade acetal bearings because of their advanced anti-friction properties and dimensional stability. Ball joints are only as durable as the protection provided by their rubber boots. These Yukon ball joints feature a two-staged approach with a synthetic Neoprene/CR outer boot and an inner seal/pancake boot that safeguard the spherical joint and bucket against gritty road grime, oil, gas, and engine fluids, and extreme temperatures. This kit replaces the upper and lower front ball joints on both sides and includes Grade 8 hardware, castle nuts, c-clips, cotter pins, and zerk fittings.
Features:
- Fits AAM 9.25" front differential
- Greaseable, pre-threaded zerk housing makes lubrication maintenance quick and easy
- Kit includes 2 upper and 2 lower ball joints and associated small parts
- CNC-machined forged SAE 1045 carbon alloy steel housing ensures longer joint life
- Hot-forged, induction heat-treated 4140 chromoly ball stud produces unrivaled durability
- Features extrusion rolled threads which are significantly stronger than cut-thread construction
- Note: You may experience memory steer during a 300- to 500-mile performance break-in period
- Neoprene-enhanced CR rubber boot and internal seal/pancake boot provide superior sealing against contaminants
- Military-grade acetal lower bearing polishes smooth as steel delivering outstanding anti-friction properties and dimensional stability
- Improved upper bearing design eliminates dreaded Death Wobble
- Lifetime warranty against manufacturing defects
Replace and upgrade your failing OE ball joints with Yukon s precision-built units constructed from strong high-tech materials. This kit replaces the upper and lower front ball joints on both sides and includes all the required small parts.
This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
Fitment
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Specifications
| Brand | Yukon Gear & Axle |
| Part Number | Y001 YSPBJ-004HDK2 |
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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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