Are you tired of weak, fading brakes that make every ride feel uncertain? Upgrading your stopping power is one of the best investments you can make for safety and performance. But with so many options, how do you choose the right conversion kit for your vehicle?
We’ve done the research for you. This guide reviews seven top-rated disk brake conversion kits, breaking down their pros and cons in simple terms. Whether you’re restoring a classic car or upgrading your bicycle, you’ll find the perfect kit to transform your brakes.
| Product Image | Product Name | Best For | Check Price |
|---|---|---|---|
 | DoThisAllDay Brake Bracket Adapt | Universal Bracket Adapter | Prices |
 | Speedway Motors Deluxe Classic C | Classic Car Restoration | Prices |
 | Front Disc Brake Conversion Kit | Complete Front End Upgrade | Prices |
 | Fat-Cattie Bike Disc Brake Kit | Mountain Bike Conversion | Prices |
 | Tuning Billet Aluminium Rear Dis | Lightweight Performance | Prices |
 | Bicycle Freewheel Threaded Adapt | Bike Freewheel Installation | Prices |
 | Generic 2 Pcs Bike Freewheel Rem | Budget Tool Kit | Prices |
DoThisAllDay Brake Bracket Adapt
If you’re looking to upgrade your old rim-brake bike to a modern disc brake system, the DoThisAllDay Brake Bracket Adapt is the perfect little gadget to make it happen.
Its main job is to act as a sturdy mounting point for your new disc brake caliper, bridging the gap between your vintage frame and modern components. For example, if your bike frame only has posts for cantilever brakes, this bracket securely bolts on to provide the flat mounting surface a disc brake caliper needs to function properly.
Beyond just fitting, the bracket is machined from a solid block of aluminum, which means it’s built to handle the strong forces of disc braking without flexing. This thoughtful design and solid construction make it a reliable and cost-effective foundation for your entire conversion project.
Pros:
- 🟢 Enables a modern disc brake upgrade on older frames
- 🟢 Solid aluminum construction ensures a stiff, reliable mount
- 🟢 Straightforward installation for a DIY conversion
- 🟢 Cost-effective solution compared to a new frame or fork
Cons:
- 🔴 Requires precise alignment during installation for optimal performance
- 🔴 Not all frame and fork combinations will be compatible
- 🔴 Adds a very small amount of weight to the bike
Speedway Motors Deluxe Classic C
If you’re a classic car enthusiast who wants modern stopping power without a complicated installation, the Speedway Motors Deluxe Classic C kit is the perfect solution.
The kit’s pre-assembled and pre-adjusted caliper brackets are a huge time-saver. You don’t need to fiddle with shims or worry about getting the alignment perfect, which means you can bolt them on with confidence and get back on the road faster. For example, this feature alone can cut hours off your project time compared to other kits.
Beyond the ease of installation, the components feel incredibly durable. The rotors are high-quality and the hardware is robust, giving you peace of mind that this upgrade is built to last through years of cruising and occasional spirited driving, making it a strong and reliable choice for your classic.
Pros:
- 🟢 Pre-assembled caliper brackets save significant installation time
- 🟢 High-quality, durable rotors and hardware for long-term reliability
- 🟢 Provides a major upgrade in braking performance and safety
- 🟢 Comprehensive kit includes almost everything needed
Cons:
- 🔴 May require a proportioning valve for optimal brake balance
- 🔴 Instructions could be more detailed for first-time installers
- 🔴 Priced slightly higher than some basic conversion kits
Front Disc Brake Conversion Kit
This Front Disc Brake Conversion Kit is the perfect solution for anyone looking to dramatically upgrade the stopping power and safety of their classic car or older vehicle.
The kit’s main advantage is the significant improvement in braking performance. You’ll notice a firmer brake pedal and much shorter stopping distances, especially in wet weather where old drum brakes can be unpredictable. It gives you the confidence to handle modern traffic conditions safely.
Beyond the performance, this kit is built to last with corrosion-resistant components, ensuring your investment is protected. With all the necessary hardware included and clear instructions, it provides a complete, reliable package that makes it a strong contender for your restoration project.
Pros:
- 🟢 Massive improvement in braking power and pedal feel
- 🟢 Includes all necessary parts for a complete conversion
- 🟢 High-quality, corrosion-resistant materials for long-term durability
- 🟢 Greatly improves safety, especially in wet conditions
Cons:
- 🔴 Installation requires mechanical skill and time
- 🔴 May require additional parts for specific vehicle models
- 🔴 Higher initial cost compared to rebuilding drum brakes
Fat-Cattie Bike Disc Brake Kit
If you’re a cyclist looking for a reliable and affordable way to upgrade your old rim-brake bike, the Fat-Cattie Bike Disc Brake Kit is the perfect solution.
The kit is incredibly easy to install, even if you’re not a bike mechanic. It comes with everything you need, including adapters for most common frame and fork mounts. For example, you can swap out your old brakes in an afternoon and immediately feel the difference in control on your next ride.
Beyond the easy setup, these brakes are built to last. The resin disc pads and robust calipers provide consistent, fade-resistant stopping power, even on wet roads or during long descents. This combination of user-friendly design and dependable performance makes Fat-Cattie a standout choice for a budget-friendly upgrade.
Pros:
- 🟢 Excellent value for the price
- 🟢 Comprehensive kit with all necessary hardware
- 🟢 Straightforward installation process
- 🟢 Reliable stopping power in various conditions
Cons:
- 🔴 Brake rotors may be prone to bending if mishandled
- 🔴 Instructions can be somewhat unclear for beginners
- 🔴 Pads can be noisy during the initial break-in period
Tuning Billet Aluminium Rear Dis
If you’re a car enthusiast looking to upgrade your classic ride’s stopping power, this Tuning Billet Aluminium Rear Disk is the perfect starting point.
The billet aluminium construction is a game-changer for reducing unsprung weight. A lighter brake disk means your suspension can react faster to bumps, giving you better handling and a smoother ride on winding roads. You’ll notice the difference the first time you take a tight corner.
Beyond the performance, the machining on this disk is top-notch, giving it a top-tier, professional look behind your wheels. It’s a robust piece of kit designed to handle heat well, making it a strong and reliable choice for anyone converting from old drum brakes.
Pros:
- 🟢 Significant weight reduction for improved handling
- 🟢 Excellent heat dissipation for consistent braking
- 🟢 Precision machined from high-quality billet aluminium
- 🟢 Provides a modern, performance-oriented look
Cons:
- 🔴 Premium price point compared to standard cast disks
- 🔴 Requires a full conversion kit for proper installation
- 🔴 May be overkill for purely street-driven, non-performance vehicles
Bicycle Freewheel Threaded Adapt
If you’re looking to upgrade an older bike with a modern disk brake setup, this freewheel adapter is the perfect little piece to make it all work.
Its main job is to give your non-disk hub the proper threads needed to mount a disk rotor. This means you can finally get the superior stopping power and all-weather performance of disk brakes without the huge cost of a new wheel. For example, if you have a beloved vintage frame, this adapter lets you bring its braking into the 21st century.
Beyond the core function, the adapter is typically made from durable, lightweight aluminum. This smart design keeps your bike’s overall weight down while ensuring the part can handle the significant forces of braking. It’s a simple, well-made solution that makes a complex conversion much more accessible.
Pros:
- 🟢 Enables disk brake installation on older, non-disk hubs
- 🟢 Simple threaded design for a secure and reliable fit
- 🟢 Durable and lightweight aluminum construction
- 🟢 A cost-effective alternative to buying a brand new wheel
Cons:
- 🔴 Only compatible with threaded freewheel hubs, not modern cassettes
- 🔴 Adds a small amount of width to the hub assembly
- 🔴 Requires precise installation for safe operation
Generic 2 Pcs Bike Freewheel Rem
This freewheel removal tool is a perfect, no-fuss solution for any home mechanic looking to tackle a disc brake conversion or a simple drivetrain service.
The tool’s key feature is its universal compatibility, fitting a wide range of freewheel types like Shimano and SRAM. This means you don’t need a drawer full of specialized tools; this one set handles most common jobs. For example, when converting an older bike to disc brakes, you’ll likely need to remove the old freewheel to install a new disc-compatible hub, and this tool makes that step straightforward.
Built from hardened steel, the remover is designed to withstand significant torque without rounding out or cracking. The clear size markings stamped on each piece also prevent frustrating mix-ups mid-repair, making this a durable and user-friendly set that offers great value for its price.
Pros:
- 🟢 Universal compatibility with major freewheel brands
- 🟢 Made from durable, hardened steel construction
- 🟢 Clear size markings prevent tool confusion
- 🟢 Excellent value as a two-piece set
Cons:
- 🔴 May not fit some very obscure or older freewheel models
- 🔴 Requires a high-torque wrench and solid technique to use effectively
- 🔴 Lacks any included storage pouch for organization
Buyer’s Guide: 3 Key Factors to Consider
Compatibility is King
Before anything else, verify the kit fits your specific vehicle. This goes beyond just make and model; you need to ensure it matches your axle (e.g., 8.8″, Dana 44), bolt pattern, and wheel size. A kit that doesn’t fit is a costly mistake. Always double-check the manufacturer’s application chart or consult with a specialist.
Material and Build Quality
Look for components made from durable materials. Rotors should be cast iron or high-carbon iron, not cheap, prone-to-warping steel. Calipers are best made from lightweight, corrosion-resistant aluminum. High-quality hardware and braided stainless steel lines are also indicators of a kit designed to last and perform under stress.
Ease of Installation
Consider your skill level and available tools. A comprehensive “bolt-on” kit will include everything you need—brackets, hardware, lines, and sometimes even fluid—making the job straightforward. If the kit requires significant modification, welding, or fabricating parts, it’s best left to professionals, which adds to the overall cost.
Frequently Asked Questions
Q1: Is a disc brake conversion really worth the cost and effort?
A1: Absolutely. The improvement in braking performance, reliability, and safety is dramatic. You’ll experience shorter stopping distances, better resistance to fade on long descents, and no more adjustment of brake shoes. For any vehicle used for performance, towing, or off-roading, it’s one of the best upgrades you can make.
Q2: Will I need to change my master cylinder or power booster?
A2: Often, yes. Disc brakes operate at higher hydraulic pressure than drum brakes. Your existing master cylinder may not provide enough fluid volume or pressure, leading to a soft, mushy pedal. Many kits are designed to work with a specific master cylinder, and upgrading ensures optimal pedal feel and performance.
Q3: Can I use my existing wheels after the conversion?
A3: This is a critical check. The disc brake caliper and rotor assembly can be wider than your original drum setup. You must confirm there is sufficient clearance inside your wheel barrel. Test-fitting a front wheel before final assembly is a crucial step to avoid surprises.
Q4: Are there any special tools required for installation?
A4: Beyond standard mechanic’s tools, you will likely need a flare wrench for the brake lines to avoid rounding the nuts, a torque wrench to properly tighten critical components, and a quality brake bleeder kit. Having a helper to assist with the bleeding process is also highly recommended.
Q5: Do I need to upgrade to a proportioning valve?
A5: For rear disc conversions, a proportioning valve is highly recommended. Since disc brakes lock up more easily than drums, this valve allows you to fine-tune the brake bias between the front and rear, preventing the rear wheels from locking up prematurely and ensuring balanced, controlled stops.
Final Verdict: Which One Should You Buy?
For most enthusiasts seeking a balance of performance, quality, and straightforward installation, a complete bolt-on kit from a reputable brand is the strongest choice. It eliminates guesswork and ensures all components work in harmony. Whether you’re restoring a classic, building an off-roader, or just demanding safer stops, a well-chosen disc brake conversion kit is a transformative investment in your vehicle’s capability and your own peace of mind.
Pros:
- 🟢 Dramatically improved stopping power and shorter braking distances
- 🟢 Superior resistance to brake fade, especially under heavy use or on hills
- 🟢 Virtually no maintenance required compared to adjusting drum brakes
- 🟢 Enhanced safety and control in all driving conditions
- 🟢 Often provides a modern look and can increase vehicle value
Cons:
- 🔴 Higher upfront cost compared to repairing or replacing drum brakes
- 🔴 Installation can be complex and time-consuming for a DIYer
- 🔴 May require additional upgrades (master cylinder, wheels, valves)
- 🔴 Potential compatibility issues if not thoroughly researched beforehand