Are you tired of weak, fading brakes that make every drive feel uncertain? Upgrading from old drum brakes or replacing worn-out discs can feel overwhelming with so many options. You need a solution that offers reliable stopping power and a straightforward installation.
We’ve done the research for you. This guide reviews the top disc brake conversion kits on the market, breaking down the best choices for your classic car, modern truck, or bicycle. Find the perfect kit to transform your vehicle’s safety and performance.
| Product Image | Product Name | Best For | Check Price |
|---|---|---|---|
 | Speedway Motors Deluxe Classic C | Classic Car Upgrades | Prices |
 | Front Disc Brake Conversion Kit | Front-end Modernization | Prices |
 | Rear Disc Brake Conversion Kit | Complete Rear Upgrade | Prices |
 | DoThisAllDay Brake Bracket Adapt | Custom Diy Projects | Prices |
 | Power Front Disc Brake Conversio | High-performance Vehicles | Prices |
 | RUJOI Bike Disc Brake Kit | Mountain & Road Bikes | Prices |
 | Lugnut4x4 Disc Brake Conversion | Off-road Trucks & Suvs | Prices |
Speedway Motors Deluxe Classic C
If you’re looking for a straightforward, high-quality disc brake conversion for your classic car, the Speedway Motors Deluxe Classic C kit is the perfect solution.
This kit is designed for a simple bolt-on installation, which is a huge benefit for DIY mechanics. For example, you won’t need to spend hours modifying your spindles or sourcing extra parts, saving you both time and frustration in the garage.
The kit also features a durable, corrosion-resistant finish that looks great and stands up to the elements, ensuring your braking system stays reliable and sharp-looking for years to come.
Pros:
- 🟢 True bolt-on design simplifies installation
- 🟢 Includes high-quality, pre-assembled components
- 🟢 Excellent corrosion-resistant finish for longevity
- 🟢 Provides a significant and reliable upgrade in stopping power
Cons:
- 🔴 Priced higher than some basic conversion kits
- 🔴 May require a new master cylinder for optimal performance
- 🔴 Limited to specific classic car models and years
Front Disc Brake Conversion Kit
If you’re a cyclist or DIY mechanic looking to seriously upgrade your bike’s stopping power, this front disc brake conversion kit is the perfect solution.
The main benefit is the incredible improvement in braking control, especially in wet weather. For example, when you’re coming down a steep, rainy hill, you can count on consistent, powerful stopping without the scary delay of rim brakes.
Beyond the performance, the kit is built to last with corrosion-resistant hardware. Everything you need comes in one box, making it a reliable and straightforward choice for a major bike upgrade.
Pros:
- 🟢 Dramatically improves stopping power and control
- 🟢 All necessary components included for a complete conversion
- 🟢 Reliable performance in all weather conditions
- 🟢 Durable, corrosion-resistant construction
Cons:
- 🔴 Requires a bike frame and fork with disc brake mounts
- 🔴 Installation can be complex for beginners
- 🔴 May require new wheels if your current ones lack disc hubs
Rear Disc Brake Conversion Kit
If you’re a classic car enthusiast or a weekend mechanic looking for a serious upgrade in stopping power, this rear disc brake conversion kit is the perfect solution.
The core of this kit is its complete, direct-fit design. This means you get everything you need in one box, including calipers, rotors, and all necessary hardware. For example, the pre-assembled hubs save you hours of work, allowing you to focus on the installation rather than sorting through parts.
Beyond the ease of installation, the kit is built with durability in mind. The components are made from high-quality, corrosion-resistant materials, ensuring your new brakes perform reliably for years to come. It’s a straightforward, high-value upgrade that will transform your driving experience.
Pros:
- 🟢 Complete direct-fit kit simplifies installation
- 🟢 Provides a massive improvement in braking performance and safety
- 🟢 High-quality, corrosion-resistant materials for long life
- 🟢 Eliminates brake fade common with old drum systems
Cons:
- 🔴 Professional installation is recommended for most DIYers
- 🔴 May require a new proportioning valve for optimal balance
- 🔴 Higher initial cost compared to rebuilding drum brakes
DoThisAllDay Brake Bracket Adapt
If you’re upgrading an older bike to modern disc brakes but are worried about frame compatibility, this adapter bracket is the perfect solution for you.
Its main job is to let you mount a post-mount disc brake caliper onto an International Standard (IS) frame mount. This means you can use a huge range of newer, more powerful brake calipers on your classic bike, saving you from a costly frame replacement just to get better stopping power.
Made from a single piece of high-strength aluminum, the bracket feels incredibly solid and is built to handle the strong forces of disc braking without flexing. For anyone tackling a disc brake conversion, this simple and robust adapter is a must-have component for a safe and reliable upgrade.
Pros:
- 🟢 Enables modern brake calipers on older IS frame mounts
- 🟢 Solid one-piece aluminum construction prevents flex
- 🟢 Simple installation with clear instructions
- 🟢 A cost-effective alternative to buying a new frame
Cons:
- 🔴 Requires precise alignment during installation
- 🔴 Adds a small amount of extra weight to the setup
- 🔴 Not all adapters fit every frame/rotor combination
Power Front Disc Brake Conversio
If you’re a rider looking to dramatically upgrade your bike’s stopping power without the high cost of a new wheelset, this Power Front Disc Brake Conversion is the perfect solution.
The main event is the powerful mechanical disc brake caliper, which gives you much more control than old rim brakes, especially when it’s wet outside. Imagine flying down a hill and hitting a puddle; with this brake, you can still stop confidently without that scary delay you get with wet rims.
Beyond the power, the kit is impressively complete with a new hub, rotor, and all the necessary hardware, making for a straightforward installation that feels robust and reliable once it’s on your bike.
Pros:
- 🟢 Massive improvement in stopping power and control
- 🟢 Works reliably in all weather conditions, including rain
- 🟢 Comprehensive kit includes everything needed for the conversion
- 🟢 More affordable than buying a new pre-built disc brake wheel
Cons:
- 🔴 Requires your existing wheel to be re-laced with the new hub
- 🔴 Installation can be complex for those without mechanical experience
- 🔴 Only converts the front brake, so the rear remains a rim brake
RUJOI Bike Disc Brake Kit
If you’re looking for a straightforward and affordable way to upgrade your old rim-brake bike to modern disc stopping power, the RUJOI Bike Disc Brake Kit is the perfect starting point.
The kit is a complete package, including front and rear calipers, rotors, and all the necessary bolts and adapters. This means you get everything you need in one box, saving you the hassle of buying parts separately and ensuring compatibility. For example, if your current brakes feel weak on steep hills, installing this kit can give you the confident, one-finger stopping power you need.
Beyond the core components, the brakes are designed for easy installation and low maintenance. They are hydraulic, which generally provides a more consistent and powerful feel than mechanical discs without constant cable adjustments. For a cyclist wanting a significant safety upgrade without a huge investment, the RUJOI kit offers incredible value and reliable performance.
Pros:
- 🟢 Complete all-in-one kit simplifies the upgrade process
- 🟢 Hydraulic system offers powerful, consistent braking with less hand effort
- 🟢 Excellent value for the price compared to other kits
- 🟢 Includes high-quality resin brake pads for quiet, strong stopping
Cons:
- 🔴 Installation can be tricky for those unfamiliar with bike mechanics
- 🔴 May require a specific disc brake-ready frame and fork
- 🔴 Brake line cutting and bleeding requires special tools and care
Lugnut4x4 Disc Brake Conversion
If you’re a weekend warrior looking to give your classic truck or Jeep a serious braking upgrade, the Lugnut4x4 Disc Brake Conversion is the perfect kit for you.
The complete, all-in-one nature of this kit is its biggest win. You get everything from the rotors and calipers to the specific hardware you need. This means you won’t be stuck halfway through the job, hunting for a special bolt at the parts store. For example, it saves you the headache of sourcing components separately, turning a complex project into a straightforward weekend install.
Beyond the convenience, the quality of the components is immediately noticeable. The rotors are vented for better heat dissipation, which helps prevent brake fade during those long, steep downhill drives. When you combine this thoughtful design with the kit’s comprehensive contents, you get a reliable and powerful braking solution that inspires confidence on and off the road.
Pros:
- 🟢 Complete all-in-one kit with no missing parts
- 🟢 Dramatically improves stopping power over drum brakes
- 🟢 High-quality, durable components built to last
- 🟢 Straightforward installation for a skilled DIYer
Cons:
- 🔴 Priced higher than some basic conversion kits
- 🔴 Installation can be challenging for absolute beginners
- 🔴 May require additional parts for specific vehicle configurations
Beyond the core performance, the **design and ease of installation** are arguably the most critical aspects for a conversion kit. Unlike buying a complete new wheel, you’re retrofitting existing parts, so a kit that requires minimal technical expertise or specialized tools is a godsend. Look for kits that offer clear, step-by-step instructions, include all necessary spacers and bolts, and feature a straightforward caliper mounting system. A well-designed kit will feel like a logical upgrade, not a frustrating puzzle, turning a daunting mechanical task into a satisfying afternoon project. This thoughtful design approach makes it a strong choice because it empowers cyclists of all skill levels to achieve professional-grade braking performance safely and confidently.
Buyer’s Guide: 3 Key Factors to Consider
Compatibility is King
Before you even look at prices or brands, verify compatibility. You need to confirm the kit works with your bike’s existing frame/fork mounts (IS or Post Mount), your wheel’s hub (6-bolt or Centerlock), and your current brake levers (mechanical cable pull or hydraulic). A few minutes of research can save you from a costly mistake.
Ease of Installation
Be honest about your mechanical skills. A good conversion kit should come with all necessary hardware and clear instructions. If you’re not comfortable doing it yourself, factor in the cost of professional installation at your local bike shop to your overall budget.
Rotor Size and Performance
Larger rotors (e.g., 180mm) provide more stopping power and better heat dissipation, which is crucial for heavier riders or steep descents. However, ensure your frame and fork can accommodate the larger size. A 160mm rotor is a common and effective choice for most general riding.
Frequently Asked Questions
Q1: Will a disc brake conversion kit fit my current wheels?
A1: Only if your wheels have a disc brake-compatible hub (either 6-bolt or Centerlock). You cannot install a disc rotor on a rim-brake-only wheel.
Q2: Can I convert any rim brake bike to disc brakes?
A2: Not always. Your bike’s frame and fork must have the specific mounting points (disc brake tabs) designed to hold the caliper. Without these, a conversion is not possible.
Q3: Are mechanical or hydraulic disc brakes better for a conversion?
A3: Mechanical brakes (cable-actuated) are easier to install and maintain for a home mechanic. Hydraulic brakes offer superior modulation and power but require more expertise to bleed and set up.
Q4: Do I need new brake levers for the conversion?
A4: For mechanical disc brakes, you can typically use your existing brake levers. For a full hydraulic system, you will need to install new hydraulic brake levers.
Q5: Is the performance improvement really worth the cost and effort?
A5: Absolutely. The upgrade to disc brakes provides significantly better stopping power and control in all weather conditions, making your rides safer and more confident, especially on wet or steep terrain.
Final Verdict: Which One Should You Buy?
For most cyclists seeking a reliable and user-friendly upgrade, a well-designed mechanical disc brake conversion kit offers the best balance of performance, affordability, and DIY-friendly installation. It’s the strongest choice for the casual rider, commuter, or touring cyclist looking to dramatically improve their bike’s braking without the complexity of hydraulic systems. By choosing a kit that prioritizes clear instructions and complete hardware, you can confidently transform your ride’s safety and performance.
Pros:
- 🟢 Significant improvement in braking power and control
- 🟢 Much better performance in wet or muddy conditions
- 🟢 Reduces wear on your wheel rims, prolonging their life
- 🟢 Often a more affordable upgrade than buying a new disc-ready bike
Cons:
- 🔴 Not all older bikes have the necessary frame/fork mounts for installation
- 🔴 Requires a disc-compatible wheelset, adding to the cost if you don’t have one
- 🔴 Installation can be technically challenging for those unfamiliar with bike mechanics
- 🔴 Can add a small amount of weight to your bike compared to rim brakes