Traxxas Ball Bearings Blue Rubber Sealed 12x21x5mm Pair TRX5101

Overview

The Traxxas Ball bearings, Blue rubber sealed (12x21x5mm) (2 pcs) TRX5101 are essential maintenance components for RC car enthusiasts across the UK who demand smooth, precise and long-lasting performance from their models. Whether you're running a competitive RC buggy, a weekend basher, or a high-performance brushless RC truck, these rubber-sealed ball bearings deliver the durability and smooth operation that serious RC hobbyists expect. Blue-seal ball bearings are engineered to keep dust and grime out of your RC vehicle's critical moving parts, resulting in less maintenance, smoother running and significantly reduced friction during operation.

If you're serious about maintaining your RC car in peak condition, investing in quality replacement bearings is one of the smartest decisions you can make. The blue rubber seal design sits between the basic open bearings and the premium black-seal option, offering an excellent balance of protection and performance for most RC applications. These bearings are manufactured to Traxxas's exacting standards and are the genuine OEM components used in many factory-built RC models. Whether you're replacing worn bearings after heavy bashing, upgrading from standard components, or simply keeping spare parts on hand, the TRX5101 offers proven reliability and trusted performance that RC enthusiasts have depended on for years.

Based in Walsall, RC Model Shop stocks genuine Traxxas components including bearing sets, motors, ESCs, suspension parts and complete ready-to-run RC vehicles. Whether you're building a custom RC car from scratch, performing maintenance on an existing model, or upgrading your setup for better performance, we have the quality components you need to get the best from your RC hobby.

Key Features

• Blue rubber seal design — The blue rubber seals form a protective barrier around the bearing races, effectively preventing dust, dirt, moisture and grime from entering the bearing while maintaining smooth operation, which is especially important when running your RC vehicle in outdoor conditions or dusty environments common across the UK.
• Reduced friction and smooth running — By keeping contaminants out of the bearing races, the rubber seals ensure that your bearings maintain their smooth operation for longer periods between replacements, resulting in a noticeably smoother driving experience and more predictable handling characteristics from your RC car.
• Less maintenance required — Rubber-sealed bearings significantly reduce the frequency of bearing maintenance and cleaning that would otherwise be necessary with open or unsealed bearings, saving you time and effort and allowing you to spend more time driving and less time in the workshop.
• Genuine Traxxas OEM components — These are the authentic original equipment manufacturer bearings used in Traxxas factory-built RC vehicles, ensuring perfect compatibility with your model and meeting Traxxas's strict quality control standards.
• Pair of bearings included — Each package contains two bearings (12x21x5mm), which is the standard configuration for most RC vehicle applications, allowing you to replace both bearings in a single axle location or service both front and rear positions depending on your vehicle's design.
• Precise size specification — The 12x21x5mm dimension is a common bearing size used across numerous Traxxas RC vehicles, making these bearings compatible with many models in the Traxxas range.
• Long-lasting durability — Rubber-sealed ball bearings provide extended lifespan compared to unsealed alternatives, offering superior protection and longer service life, which means better value for money over the lifetime of your RC vehicle.

Technical Performance

These Traxxas ball bearings feature precision-engineered rubber seals that provide an excellent balance between protection and performance. The 12x21x5mm dimensions represent a standard bearing size widely used across the RC industry for various suspension and drivetrain applications. Rubber-sealed bearings offer a notable step forward in bearing technology compared to completely open bearings, providing meaningful protection against the harsh conditions that RC vehicles encounter during typical use. The blue rubber seal design is engineered to maintain optimal contact with the bearing race whilst allowing smooth rotation, ensuring that your RC vehicle experiences minimal friction and maximum efficiency. Build quality is paramount with Traxxas components, and these bearings are manufactured to extremely tight tolerances to ensure reliable performance across temperature ranges and driving conditions. When used for their intended purpose in RC vehicles running in dusty or dirty environments, rubber-sealed bearings demonstrate superior longevity and require significantly less frequent maintenance than their unsealed counterparts. The engineering incorporated into these seals ensures that they remain effective throughout the bearing's operational life without causing excessive drag or resistance. Whether you're upgrading worn bearings in an existing RC vehicle or building a new model, these genuine Traxxas components provide the quality foundation necessary for dependable, smooth performance.

What's in the Box

• Pair of 12x21x5mm blue rubber seal ball bearings (2 pieces)

Frequently Asked Questions

• What is the difference between blue-seal and black-seal Traxxas ball bearings? — Blue-seal bearings offer solid protection against dust and grime with reduced maintenance requirements. Black-seal bearings step this up further, providing an even tighter seal and offering ultimate protection in particularly dirty environments. If you're running your RC car in sandy, muddy or extremely dusty conditions, black-seal bearings provide superior sealing. For general bashing and typical outdoor RC use across the UK, blue-seal bearings deliver excellent value and protection.
• How often should I replace my RC ball bearings? — The frequency of bearing replacement depends on how heavily you use your RC vehicle and the conditions in which you drive. Rubber-sealed bearings last significantly longer than unsealed bearings because the seals keep contaminants out. Signs that bearings need replacement include grinding sounds, rough rotation, or noticeable resistance when spinning the wheels by hand. Regular inspection of your bearings during maintenance routines will help you identify when replacement is needed.
• Are these bearings compatible with my Traxxas RC model? — The 12x21x5mm size is used across many Traxxas models. You should check your vehicle's manual or the Traxxas compatibility list to confirm that this bearing size matches your specific model, as different Traxxas vehicles use different bearing sizes. Commonly used in models like the Slash, Stampede, Rustler and various other Traxxas platforms.
• What is a rubber-sealed ball bearing and why does it matter? — A rubber-sealed ball bearing is a precision component with rubber seals fitted on one or both sides of the bearing race. These seals create a protective barrier that prevents dust, dirt and moisture from entering the bearing while allowing smooth rotation. For RC vehicles, this protection is crucial because running in outdoor environments exposes bearings to contamination that can cause rough operation, increased friction and premature bearing failure. Sealed bearings require less maintenance and provide smoother performance.
• Can I use these bearings on any RC vehicle or just Traxxas models? — Whilst these are genuine Traxxas bearings optimised for Traxxas vehicles, the 12x21x5mm size is a standard bearing dimension used across the RC industry. They may be compatible with other RC brands that use the same bearing size, but you should verify compatibility with your specific vehicle before purchasing. For guaranteed compatibility, use them in Traxxas models as designed.
• How do I know if my bearings need replacing? — Key indicators that bearings need replacement include grinding or squealing noises from the drivetrain or suspension, resistance when manually spinning the wheels, visible rust or damage to the bearing, or significantly rougher handling compared to when your vehicle was new. Regular bearing inspection during routine maintenance helps catch worn bearings before they cause other damage.

Why Buy from RC Model Shop?

RC Model Shop is a trusted UK RC retailer and authorised dealer for all the brands we stock, including Traxxas, ARRMA, Losi, FTX, Hobbywing, Spektrum and more. Based in Walsall, we have a physical store where customers are welcome to come in, view products and purchase in store. Whether you are a seasoned competitor, a weekend basher, or just discovering the world of RC for the first time, our team of experienced RC enthusiasts is here to help you find the perfect setup and provide ongoing support. Order the Traxxas Ball bearings, Blue rubber sealed (12x21x5mm) (2 pcs) TRX5101 today with confidence, knowing you are buying from an authorised retailer with genuine products, expert knowledge and a commitment to customer satisfaction. Shop online or visit us in Walsall — we look forward to helping you get the most out of your RC experience.