Chassis Components› Chassis Fabrication Materials
Rock Jock
***Discontinued***2.5 JJ BALL 0.640 HOLE X 2.625 OAW - EACH
SKU: R01U CE-91102-28
Easy — 1–2 hours
Description
This specific ball is intended for use only in externally greased Johnny Joint bodies, meaning those equipped with an external grease zerk fitting. It does not possess a grease passage for internal greasing. RockJock recommends using a hand pump grease gun with non-synthetic, hi-moly lube grease for maintenance.
Fitment
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Specifications
| Brand | Rock Jock |
| Part Number | R01U CE-91102-28 |
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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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