UMI PERFORMANCE
UMI Performance 73-87 GM C10 Lowering Spindle 2.5in drop
SKU: U01C CP4S4
Description
Part #: CP4S4
Heavy duty 2.5 drop spindles feature UMI satin black powder coat for ultimate durability. Spindles use GM C10 factory bearings and accept factory GM brake kits.
This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | UMI PERFORMANCE |
| Part Number | U01C CP4S4 |
Buy with Confidence
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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