Tech Talk with Master Power Brakes

Do I Need a Spindle to Install My Front Disc Brake System?

Posted by Master Power Brakes Team on Oct 16, 2019 2:53:36 PM

A question that our customers occasionally ask us is, “why do some disc brake conversion kits include a replacement spindle and others don’t?” Although there isn’t a simple way to answer this question, there are important aspects of spindles that are worth discussing.When developing a disc brake conversion kit, one of Master Power Brakes’ first design criteria was to use the stock drum brake spindle. In most applications, we are dealing with cars that are 50 plus years old. You may think that over that time period a spindle or in particular, the spindle pin, would wear out and you should replace it. Fortunately, that isn’t the case. The original OE spindles are actually well-manufactured pieces. From the engineering phase all the way to the manufacturing process, they have to go through the proper heat-treating steps and have proven to withstand the wear and tear of regular life on the road. Because of that level of quality, we try to keep the parts that the OEM’s built on the vehicle. 




In addition, nobody likes to break apart the spindles from the ball joints. This means more labor and dealing with a coil spring that can act as a weapon of mass destruction.

The above thought process is very much the case when looking at our kits that fit the GM A-Body, F-Body and X-Body applications. Aside from ours, almost every kit on the market includes a spindle. In those kits, the spindle is an aftermarket piece that mimics the factory disc brake spindle used on these applications when disc brakes became the standard. Because of our design thoughts, we kept the drum spindle and wound up making a disc brake conversion kit that is much better than what GM designed in the first place. 

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In nearly everything we buy, the cost is a common concern that must be considered. It specifically comes into play when a customer is considering something like the Chevrolet C-10 Legend Series Disc brake kits. 



Here at Master Power Brakes, we along with most every other company that does a similar kit, include a spindle. In this instance, we use a spindle that is manufactured to be a direct bolt-on to the factory ball joints and tie rod ends but will accept the rotors and calipers from a later model C-10 application. In this instance, the spindles are largely well made and don’t come with any of the concerns you normally have when dealing with aftermarket spindles. In this instance, it makes the most sense to include a spindle. In this instance, the most cost effective option is also the best option.

Although it’s easy to choose a less expensive system, it doesn’t mean it’s the right choice. Choosing the brake kit that provides the best approach and function possible for the customer is the right thing to do. Your brake company should be looking out for your best interest at all times. 

MPB_CTA_GotQuestionsThe bottom line is that if there isn’t a way to make a factory drum brake spindle work, we will move over to replacing with an aftermarket spindle. However, we have to have reached a conclusion that exhausts all other possibilities. If you have any questions about spindles or a specific system, don’t hesitate to leave us a comment, shoot us an email or give us a call.


Give us a call at 1-888-249-9425 and we’ll  be glad to answer any questions you might have.  The call is on us, so what are you waiting for?


Topics: Tips and Info, Brake System Upgrades

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