In competitive karting, where every turn, brake, and millisecond counts, the braking system can make the difference between winning and falling behind. At SDT Brakes, we've spent years developing high-performance compounds tailored specifically for karting, and today we present a key comparison: RK01 vs RK11, two lines of karting brake pads designed for different styles, conditions, and levels of demanding use.

Both ranges share a common philosophy: providing immediate response, progressiveness, and thermal stability. However, each has nuances that make them unique on the track. In this article, we review their technical differences, test results, and when to choose one or the other.

Technical Differences Between Standard and Soft

The RK01 (Standard) and RK11 (Soft) ranges have been developed to adapt to different track conditions, temperatures, and driving levels. Although both are compatible with the main kart brake systems — CRG, Tony Kart, Maranello, OTK, VEN05, DD2, etc. — their technical characteristics respond to different behaviors.

RK01: The Standard Balance

The RK01 pads are formulated to deliver stable performance in both cold and hot conditions, with a consistent level of friction and controlled wear. It is the most versatile compound in our Racing line.

• Average coefficient of friction: ideal for technical tracks where control is sought.
• Recommended for long sessions or drivers who prioritize consistency lap after lap.
• Lower disc wear: making them perfect for maintaining the system in good condition throughout the season.

RK11: Control in Extreme Situations

The RK11 Soft version takes sensitivity and response a step further. Designed to provide higher bite at low temperatures, it’s perfect for low grip conditions or drivers seeking a more aggressive entry into braking.

• Higher initial coefficient of friction: offers a more direct braking sensation.
• Recommended for wet conditions, low-adhesion circuits, or indoor karting.
• Slightly higher wear, but balanced by its immediate response capabilities and smooth transition.

The RK11 compound is intended for experienced drivers who know how to take full advantage of every millimeter of braking.

Test Results on Track and Bench

The evolution from RK01 to RK11 is not based solely on formulation adjustments. At SDT Brakes, we have developed these compounds through multiple testing in braking benches and on the track, working alongside racing teams and specialized mechanics.

In real conditions:

The RK01 stands out for its thermal stability. During prolonged sessions, it maintains a progressive braking, without loss of effectiveness or fade.

RK11 exhibits greater immediate braking power, especially in the first laps or at medium temperatures. Its performance shines on technical tracks with short, intense braking zones.

Both lines meet high-level demands in national and international championships, and their references are available in packs for intensive use—ideal for teams or drivers who compete regularly.

When to Use Each Compound

Choosing between RK01 and RK11 depends on several key factors: circuit type, environmental conditions, driving style, and the level of exigency of the race.

• RK01 is ideal if:
• You seek stable braking over long runs.
• You compete on mixed or variable grip tracks.
• You prioritize durability and progressive control.
• You use the kart for frequent training or mixed use.

• RK11 is ideal if:
• You need immediate response from the first lap.
• The circuit has low-adhesion zones or slippery surfaces.
• Your driving style is more aggressive, relying on braking.
• You race in events where low-temperature control makes the difference.

Both models are available in versions for front or rear brakes and are compatible with the main chassis on the market (CRG, OTK, Maranello, Birel, etc.).

The Future of Karting with SDT

At SDT Brakes, we remain committed to the evolution of braking in karting. Our RK compounds not only meet the current demands of drivers and teams but also anticipate upcoming trends: greater thermal efficiency, lower wear, and even more control in extreme conditions.

We work with environmentally friendly materials (copper and heavy metals free), manufacture 100% in Spain under racing standards, and test each formula on circuit before market release.

The difference lies in the details. In karting, where the margin for error is minimal, having brake pads developed for competition can be the difference between gaining an advantage or falling behind.

Looking for the best karting brake pads? Explore the full range of RK01 and RK11 in our online store and take your kart to the next level with the precision and technology of SDT Brakes.