How to Upgrade Your Bike’s Brake Pads From Resin to Sintered Compound

Changing from resin brake pads to sintered pads can give a bicycle stronger braking performance, longer pad life and better resistance to heat. The trade-off is extra noise, a different feel at the lever and a greater chance of rotor wear. Choosing the right compound therefore involves more than buying the hardest-looking pad on the shelf.

Sintered, or metallic, brake pads contain metal particles bonded under heat and pressure. Resin pads use organic materials such as fibres, rubber and binding agents. Semi-metallic pads sit between the two, offering a compromise for riders who want improved durability without the full noise and bite of a metallic compound.

The upgrade is especially useful for mountain bikes, cargo bikes, commuter e-bikes and bicycles ridden in wet or gritty conditions. A long descent in the Victorian High Country, a muddy trail around Mount Stromlo or repeated stops on a loaded Sydney commute can expose the limits of organic pads quickly.

Before fitting anything, confirm that your calliper and rotor are designed for the new compound. Pad shape, backing plate size and brand-specific compatibility matter more than the general label on the packet. A careful installation and proper bedding-in process are essential for safe, predictable braking.

Check Compatibility Before Buying

Start by identifying the exact brake calliper and pad shape. Shimano, SRAM, Tektro, Magura and other manufacturers use different profiles, even when two pads appear similar. Remove the existing pad only after checking its shape, retaining pin, spring clip and backing plate. The model code may be printed on the pad, calliper or original packaging.

Your rotor also needs attention. Many disc rotors are marked “resin pad only” or “organic pad only”. These rotors may lack the thickness, surface treatment or heat tolerance required for metallic compounds. If the rotor does not clearly support sintered pads, replace it with a compatible rotor rather than taking a chance.

Inspect the rotor for deep grooves, a blue or purple heat tint, a sharp outer lip or contamination from chain lubricant. A worn rotor can undermine the benefit of new pads. Measure its thickness with a calliper if the manufacturer provides a wear limit, and check that the replacement rotor matches the calliper’s minimum diameter and mounting standard.

Understand How Each Compound Behaves

Resin pads are generally quiet and offer smooth modulation. They reach useful braking power quickly, making them popular for road bikes, light trail riding and everyday commuting. They also tend to be gentler on rotors, though they can wear rapidly in rain, mud or prolonged braking.

Sintered pads maintain performance at higher temperatures and usually last longer in abrasive conditions. Their strong initial bite can suit steep trails, heavier riders and e-bikes, where repeated stops create substantial heat. Metallic material can remain effective after water and grit have affected a resin pad.

The disadvantages are increased squeal, a harsher lever feel and faster rotor wear. Some riders describe the braking as more “grabby”, particularly during the first few rides. Noise is more likely in wet weather, and a metallic pad may transmit more vibration through a lightweight fork or frame.

A semi-metallic compound can be a sensible middle ground. It provides better heat tolerance and durability than a basic organic pad, while remaining quieter and more progressive than a fully sintered model. For many Australian commuters, this balance works well across dry summer roads and wet winter rides.

Gather the Right Parts and Tools

Replacing pads is a small job, but clean tools and correct parts make a major difference. Keep grease, chain oil and aerosol lubricant well away from the rotor and friction material. Even a small amount of contamination can cause squealing and weak braking.

You will commonly need:

Work on a stable stand or place the bike securely with the wheel supported. If the brake uses hydraulic fluid, do not squeeze the lever while the wheel or pads are removed. Keep the old pads separate from the new ones so dust or residue cannot transfer.

For a first replacement, photograph the original pad arrangement before removal. The spring often sits between the pads, and some systems use a split pin, threaded bolt or magnetic retaining system. Losing or misplacing a small spring can allow pad movement, rattling or uneven wear.

Fit the Sintered Pads Correctly

Remove the wheel if it gives better access, then take out the retaining pin or bolt. Slide the old pads and spring from the calliper. If the pads are held tightly, use a pad spreader or a clean plastic lever rather than a sharp tool that could damage the calliper seal or scratch the piston.

Before installing the thicker new pads, gently push the pistons back into the calliper. Use a dedicated spreader or a broad, clean plastic tool. Do this slowly and evenly. On hydraulic brakes, pushing fluid back into the reservoir can raise the fluid level, so inspect the reservoir and avoid forcing the pistons if the system is already overfilled.

Install the spring in the same orientation as the original, then insert both pads and secure them with the correct pin, bolt or clip. Confirm that the friction surfaces face the rotor and that the pads slide freely without excessive side-to-side movement. Refit the wheel and check that it is fully seated in the dropouts or thru-axle.

Spin the wheel and squeeze the brake lever several times until the pads contact the rotor normally. The lever should feel firm and consistent. If it comes back to the handlebar, feels spongy or fails to centre the pads, stop and inspect the installation. Hydraulic bleeding may be required if air has entered the system.

Feature Resin pads Sintered pads
Initial feel Smooth and progressive Stronger bite, sometimes sharper
Noise Usually quieter More likely to squeal
Heat resistance Moderate High
Wet and gritty conditions Can lose performance or wear quickly Generally more durable
Rotor wear Lower Higher
Best use Road riding, light commuting, quiet operation Mountains, e-bikes, heavy loads and long descents
Typical cost Often lower Often slightly higher

Bed In the New Brake Pads

New pads and a new or cleaned rotor need to mate gradually. Bedding creates an even transfer layer on the rotor and allows the pad surface to conform to it. Skipping this process can produce weak braking, vibration, glazing or permanent noise.

Find a quiet, dry stretch of road away from traffic. A gentle downhill section with clear visibility can work, but avoid public roads where repeated braking could place other people at risk. In Australia, a quiet cycle path may still have pedestrians, so choose a controlled location and obey local signage.

Accelerate to a moderate speed, then apply one brake firmly enough to reduce speed without stopping completely. Release the brake and allow the system to cool briefly. Repeat this process several times, using the front and rear brakes separately so you can feel how each one develops.

Use a series of stronger applications towards the end, still avoiding a complete stop with the lever held hard. Do not drag the brake continuously down a long hill, since constant light pressure creates heat without allowing proper transfer. The lever should become more powerful and consistent as bedding progresses.

Signs of an incomplete or poor bed-in include shiny glazed pad surfaces, pulsing at the lever, loud squealing and a rotor that looks patchy rather than evenly grey. If contamination is suspected, remove the pads and clean the rotor with isopropyl alcohol. Heavily contaminated pads usually need replacement rather than rescue.

Tune the System for Australian Riding

Australia presents a wide range of brake conditions. Coastal routes around Brisbane, Perth and Adelaide can expose components to salt air and fine sand, while wet bush trails near Melbourne and the Blue Mountains can cover pads in grit. Rinse mud from the calliper area with clean water, then dry the bike rather than leaving abrasive paste around the rotor.

For riders in alpine areas such as Falls Creek or Thredbo, heat management matters more than a single strong stop. Use both brakes, brake firmly in controlled applications and avoid resting a hand constantly on the lever. A larger compatible rotor can improve heat control, but it must match the frame, fork, calliper adapter and manufacturer’s limits.

E-bikes and cargo bikes deserve particular care because their combined mass creates more heat during each stop. Sintered pads may last longer for these uses, though they do not compensate for undersized rotors, poor calliper alignment or worn bearings. Check the system after the first few rides and look for uneven pad contact.

Replacement parts can vary in availability across the Australian market. A local independent bike shop may stock common Shimano or Tektro pad shapes, while less common compounds may require ordering. Keep a spare set in your workshop, especially before a remote trip or a weekend riding in Tasmania, where finding a specific pad locally may be difficult.

Checks After the First Few Rides

A sintered conversion should feel controlled rather than dramatic. If braking is excessively harsh, try a semi-metallic compound at the next replacement, check rotor compatibility or use a larger rotor where the manufacturer permits it. If the brakes remain weak, investigate calliper alignment, hydraulic condition and rotor contamination instead of assuming the compound is at fault.

Common Installation Mistakes to Avoid

Brake pads are consumable parts, so their condition should be part of every maintenance routine. Measure wear regularly, especially before long descents or loaded rides. Replace the pads as a pair on each calliper, and change a contaminated or overheated rotor when cleaning cannot restore a consistent braking surface.

Upgrading from resin to sintered compound can be a worthwhile improvement when your riding generates heat, mud or repeated braking. Match the pad to the calliper and rotor, install it cleanly, bed it in methodically and monitor the result. With those steps complete, your bike will be ready for longer descents, wet commutes and demanding Australian trails with dependable stopping power. Make the inspection and bedding ride part of your next workshop session before heading out.