01/10/2020
When it comes to motorcycle brake pads, the internet is awash with opinions, and often, negative reviews can deter even the most adventurous rider. Yet, sometimes, taking a leap of faith can yield astonishing results. Such was the case with a recent acquisition of Goldfren S33 sintered brake pads for a Kawasaki ZRX, a decision made despite an overwhelmingly negative consensus online.

The journey began with the meticulous preparation essential for any brake component installation. The calipers were thoroughly cleaned, and the brake discs were prepped with care, ensuring an optimal surface for the new pads to bed into. Once installed, the initial bedding-in process commenced with a modest 20-mile ride. This crucial phase allows the pad material to conform to the disc surface, creating an even contact patch for maximum braking efficiency. Advice from Mark at Brakecrafters suggested that the pads would continue to improve up to around 100 miles before reaching their full potential, a testament to the importance of patience and proper procedure.
Initial Impressions and Performance Dynamics
Contrary to the bleak picture painted by online forums, the immediate performance of the Goldfren S33 pads was nothing short of impressive. The rider's experience diverged sharply from the perceived wisdom, leading to genuine enthusiasm. While they may not offer the aggressive, immediate 'bite' often associated with pads like the EBC HH, their performance is far from lacklustre. In fact, this characteristic absence of an overly strong initial bite proved to be a significant advantage.
The most striking improvement was the complete eradication of the 'wooden' feeling that plagued the OEM pads, particularly noticeable with the ZRX's six-pot calipers. This wooden sensation, common with some stock setups, translates to a lack of feedback and a vague sense of control at the lever. With the Goldfren S33s, this feeling vanished entirely. Instead, the pads delivered powerful braking performance coupled with a wonderfully progressive feel. This progressive nature means that the braking force builds smoothly and predictably as more pressure is applied to the lever, allowing for incredibly precise modulation. Riders can truly 'feel' what the front brakes are doing, enabling fine adjustments and enhancing confidence, especially in challenging riding conditions.
Mark's insights further corroborated this experience. He noted that while EBC HH pads offer a formidable initial bite, their modulation can be more challenging. This aligns perfectly with the Goldfren S33's strength: their superior controllability. The ability to precisely meter braking force is paramount for both safety and performance, allowing for smoother stops and better handling through corners.
Comparing Brake Pad Characteristics
Understanding the nuances between different brake pad types is crucial for making an informed choice. Here's a quick comparison based on the rider's experience:
| Characteristic | Goldfren S33 (Sintered) | EBC HH (Sintered) | OEM (Organic/Semi-metallic) |
|---|---|---|---|
| Initial Bite | Good, but progressive | Strong, immediate | Mild to moderate |
| Modulation | Excellent, very controllable | Can be challenging | Moderate, sometimes vague |
| Feel | Progressive, communicative | Direct, sometimes abrupt | Often 'wooden' or numb |
| Power | Powerful | Very powerful | Adequate for street use |
| Durability | Expected high (sintered) | High (sintered) | Varies, generally good |
Sintered brake pads, like the Goldfren S33 and EBC HH, are manufactured by fusing metallic particles under high heat and pressure. This process creates a dense material that offers excellent friction characteristics, high temperature resistance, and superior durability compared to organic or semi-metallic pads. Their performance is less affected by water, making them a popular choice for all-weather riding and performance applications.
The Integrity of a True Professional
Perhaps the most remarkable aspect of this entire experience wasn't just the surprising quality of the brake pads, but the unparalleled honesty and integrity of Mark from Brakecrafters. After the positive review, when the rider called back, ready to order a set of Goldfren S33s for a Kawasaki Z900, Mark's response was unexpected: 'not just yet'.
The Z900 in question had only accrued about 5,000 miles, meaning its OEM pads were still relatively new. Instead of capitalising on an eager customer, Mark advised putting the front end up, thoroughly cleaning the existing discs, and giving them a light sanding. His rationale was to see if the OEM pads would feel any different after this simple maintenance. This level of customer care is exceptionally rare in any industry, let alone the automotive aftermarket where sales targets often dictate recommendations. It speaks volumes about Mark's character and his commitment to genuine service, solidifying his reputation as a truly honest man.
This candid advice, urging a customer to potentially save money and evaluate existing components before purchasing new ones, is precisely why building relationships with trusted suppliers and mechanics is invaluable. It’s a stark reminder that true professionals prioritise their clients' best interests over immediate profit.

The Verdict and Future Considerations
Following Mark's advice, the plan is to perform the suggested maintenance on the Z900's OEM setup and assess the difference. However, based on the profound positive experience with the ZRX, the Goldfren S33 pads unequivocally receive a resounding thumb up. They have defied expectations, proving that sometimes, real-world performance can contradict widespread online sentiment.
This experience underscores several critical points for any motorcycle enthusiast: the importance of proper installation and bedding-in, the value of understanding brake pad characteristics beyond mere initial bite, and the undeniable benefit of dealing with reputable, honest suppliers. While the internet offers a wealth of information, it's personal experience and trusted professional advice that often lead to the best outcomes.
Frequently Asked Questions About Brake Pads
Q: Are Goldfren S33 pads good for everyday riding?
A: Based on this review, yes. They offer powerful, controllable, and progressive braking, which is excellent for both spirited riding and daily commutes, enhancing rider confidence.
Q: How do sintered brake pads differ from organic pads?
A: Sintered pads are made by compressing metallic particles under high heat, resulting in a very dense and durable pad that offers superior friction and heat resistance. Organic pads use a mix of fibres and resins, are generally quieter, but may not offer the same high-temperature performance or longevity.
Q: What is 'brake pad modulation' and why is it important?
A: Modulation refers to the ability to precisely control the braking force applied by varying pressure on the brake lever. Good modulation allows for smooth, controlled stops and fine adjustments to speed, crucial for maintaining balance and traction, especially in corners or emergency situations.
Q: How do you properly bed-in new brake pads?
A: Bedding-in typically involves a series of progressively harder stops from moderate speeds (e.g., 30-40 mph), allowing the pads and discs to heat up and cool down. Avoid locking the brakes or coming to a complete stop during the initial runs. This process creates an even transfer layer of pad material onto the disc, optimising performance and preventing judder.
Q: Should I always replace my brake pads with the same type as OEM?
A: Not necessarily. While OEM pads are designed to work well with your bike, aftermarket options like sintered pads can offer improved performance, feel, or durability. Always ensure any replacement pads are compatible with your caliper and disc type, and consider your riding style and preferences.
Q: How often should I clean my brake calipers and discs?
A: Regular cleaning of calipers helps prevent piston sticking and ensures smooth operation. Discs should be cleaned during pad changes or if contaminated. A light sanding of discs (as advised by Mark) can help remove embedded material and improve pad-to-disc contact, especially when changing pad compounds or if performance has degraded.
If you want to read more articles similar to Goldfren S33 Sintered Pads: A Surprising Verdict, you can visit the Brakes category.
