CP4S4 – 1973-1987 GM C10 Lowering Spindle, 2.5″ drop
$379.99
⚠ See fitment note
PRODUCT DESCRIPTION
Upgrade your GM C10 with these heavy-duty 2.5" drop spindles featuring a UMI satin black powder coat for ultimate durability and an enhanced aesthetic appeal. These robust spindles are engineered to be a direct bolt-in replacement, seamlessly accepting factory GM C10 bearings and brakes, making installation straightforward and hassle-free. However, it's important to note that if your brake rotors are 1", some hot rodding will be required as detailed below.
Designed specifically for the 1973-1980 GM C10 trucks, these spindles fit perfectly with 1-1/4" brake rotors. If you own a 1981-1987 model, you might find that it comes with 1" brake rotors. In such cases, you'll need to upgrade to the 1-1/4" rotors used on the earlier models to ensure compatibility and optimal performance.
For your convenience, we have provided a list of GM-compatible part numbers below (parts not included) to facilitate this upgrade:
- 18A2A AC Delco: Qty 2 Brake Hub/Rotor – 1.25” wide
- 18FR640 AC Delco: Qty 1 Brake Caliper – Left Front 1.25” rotor
- 18FR639 AC Delco: Qty 1 Brake Caliper – Right Front 1.25” rotor
- Set 5 Timken: Qty 2 Inner Wheel Bearing – 1.375” I.D.
- Set 3 Timken: Qty 2 Outer Wheel Bearing - 0.850” I.D.
- 8871 Timken: Qty 2 Inner Bearing Seal
Fitment Note: Drop spindles require a 1.25" thick brake disc compared to the base 1"
PRODUCT FEATURES
- Heavy-duty construction
- Satin black powder coat finish
- Direct bolt-in replacement
- Compatibility with factory bearings and brakes
- Designed for 1973-1980 GM C10 trucks
- Fits 1-1/4" brake rotors
- Adaptability for 1981-1987 models (with rotor upgrade)
| Fitment | |
|---|---|
| Platform | |
| Manufacturer | |
| Finish |
Powder Coat |
Why Choose
UMI Performance
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North American Raw Materials
Proudly partnering with leading USA steel suppliers, we source the finest North American mined and milled steel
Precision Bent DOM Tubing
Machine-guided DOM tubing bends maintain correct geometry while maintaining material strength.
Laser Cut Plating
We take North-American sourced plating and precision-cut each component with the latest laser-cutting technology.
Durable Powder Coating
Each finished part is properly prepped and coated with high quality Tiger Dry Lac powder coat, providing a tough long-lasting finish.
Consistent Welds
Our highly-skilled welders and robotic-welders provide consistent welds and ultimate part penetration.
100% USA Made
We take pride in providing 100% USA-Manufactured suspension components.
Shipping Guidelines
Flat Rate Shipping ($12.95) is only offered on Retail orders over $149 shipped via Ground in the Continental United States.
All International customers are responsible for any applicable duties and/or taxes incurred on your shipment upon delivery.
Return Information
All returns are subject to the authorization of UMI Performance, Inc. Please email [email protected] for a Returned Merchandise Authorization (RMA) number. Our Sales team will either authorize or deny the request for return at its discretion. Any product returned without an issued RMA number will not be credited. All returns must be made within 30 days of delivery, be in new condition, be in original sealed packaging and include the RMA number on the outside of the packaging. No exceptions. All products and their packaging must be in new and unopened condition. Products that have been altered, installed, or modified are not returnable. All shipping costs for returns are the responsibility of the customer. All returns are subject to a 20% restocking fee as well as the original shipping charges that UMI Performance may have incurred while shipping your order.
Due to the majority of Viking products being drop shipped, we can not offer returns on any Viking products. If you purchase a Viking product be sure it fits your application. If you need technical assistance prior to placing order please contact [email protected]
This 'CP4S4 - 1973-1987 GM C10 Lowering Spindle, 2.5" drop' fits the following platforms:
Fitment Note: Drop spindles require a 1.25" thick brake disc compared to the base 1"
1973-1987 GM C10/C15
- 1973 1974 Chevrolet C10 Pickup
- 1975 1986 Chevrolet C10
- 1987 1987 Chevrolet R10
- 1973 1974 GMC C15/C1500 Pickup
- 1979 1986 GMC C1500
- 1975 1978 GMC C15
- 1987 GMC R1500
This CP4S4 - 1973-1987 GM C10 Lowering Spindle, 2.5" drop fits the following vehicles:
1974
Chevrolet C10 Pickup
- 1973 1974 Chevrolet C10 Pickup
GMC C15/C1500 Pickup
- 1973 1974 GMC C15/C1500 Pickup
1986
Chevrolet C10
- 1975 1986 Chevrolet C10
GMC C1500
- 1979 1986 GMC C1500
1987
Chevrolet R10
- 1987 1987 Chevrolet R10
1978
GMC C15
- 1975 1978 GMC C15
GMC
R1500
- 1987 GMC R1500
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