Disc Brake Conversion Kit Cost, Fitment & Safety: Your Questions Answered

Question: How Much Does a Disc Brake Conversion Kit Cost?

(Answer) Price depends on your vehicle, the brand, and how much of the car you're converting.

Front or rear only conversion kits
Front or rear kits start around $450 to $650. Most include rotors, calipers, brackets, and hardware sized for popular platforms like early Ford Mustangs, Chevy C10 trucks, or classic Mopar A-bodies.

Four-wheel disc brake conversion kits run more. Budget $900 to $1,200 for a solid complete kit, and up to $1,500 or more if you're going with a premium brand or want drilled rotors, slotted rotors, powder-coated calipers, or an upgraded master cylinder bundled in.

Question: What's Included in a Disc Brake Conversion Kit?

(Answer) It varies by kit, but a complete four-wheel setup typically includes:

• Rotors (plain or drilled & slotted)
• Calipers (loaded with pads in most kits)
• Caliper brackets or spindle adapters
• Wheel bearings
• Hardware and mounting bolts
• Master cylinder and booster (power kits)

Question: Will a Disc Brake Conversion Kit Fit My Vehicle?

(Answer) Fitment matters more than anything else on this purchase. These kits are built for specific applications, so search by year, make, and model before you buy anything. On older cars especially, things like wheel size, bolt pattern, rear end configuration, and shock placement can all affect whether a kit goes in clean. If you're not sure, call us at 877-797-1969 and we'll help you figure it out.

Question: Is a Disc Brake Conversion Worth It for Safety?

(Answer) Yes. Drum brakes work fine under normal driving conditions, but they have a heat problem. The drum traps heat during repeated hard stops, and once the shoes get hot enough, your stopping distances climb. They also pull if one side gets wet or if the shoes wear unevenly, and they need periodic adjustment that most people never do. Disc brakes don't have those issues.

Question: Do I Need to Upgrade the Master Cylinder?

(Answer) Usually yes. Drum systems run at higher hydraulic pressure than disc setups, and a master cylinder spec'd for drums won't give you the right pressure balance or fluid volume after a conversion. The result is a spongy pedal, inconsistent modulation, or a pedal that needs more effort than it should. Most quality kits already spec the right master cylinder for the application. If your car doesn't have a power booster yet, now is a good time to add one.

Question: Can I Install a Disc Brake Conversion Kit Myself?

(Answer) A front spindle-swap or bracket kit on a popular platform is a reasonable weekend job if you've done brake work before and have a floor jack, jack stands, and basic hand tools. The instructions in most kits are straightforward.

Don't skip the post-install checklist. Bleed the system completely, check for leaks, confirm the pedal is firm and pulls evenly, and do a slow test in a controlled area before you take it on the road. If anything feels off, get a shop involved before driving it at speed. Brakes aren't the place to find out later.

Question: What Brands Make Quality Disc Brake Conversion Kits?

(Answer) We carry The Right Stuff because they build kits for a wide range of applications and stand behind the product. Whatever brand you're looking at, check for a warranty, zinc-plated or coated hardware, and a manufacturer with a real track record in the brake industry. Loaded caliper kits that include pads are worth the small premium since it removes a variable and ensures the pad compound is matched to the caliper from the start.

Looking for disc brake conversion kits for your vehicle? Your search stops here!