TRX9845X

Overview

The Traxxas Ball bearing set for portal drive housings (TRX9845X) is an essential upgrade component for serious RC crawler enthusiasts across the UK who demand reliability and smooth performance from their vehicles. These precision-engineered blue-seal ball bearings are specifically designed to fit Traxxas portal drive housings, making them the perfect choice for owners of TRX-4, TRX-6 and other compatible models seeking to maintain peak performance. Whether you're tackling challenging terrain at your local RC car club or competing in organised events, quality bearings are fundamental to ensuring your RC crawler delivers consistent handling and minimal maintenance requirements.

Ball bearings are critical components in any RC vehicle, and the portal drive housings on modern crawlers like the Traxxas TRX-4 and TRX-6 demand premium-quality replacements to keep your model running smoothly. The TRX9845X bearing set features genuine Traxxas engineering with blue-seal construction, designed specifically to exclude dust and grime that would otherwise degrade performance over time. By choosing authentic Traxxas replacement bearings, you're investing in the longevity and reliability of your RC crawler, ensuring that every run delivers the responsive handling and smooth operation that makes RC crawling so rewarding.

These bearings represent genuine OEM Traxxas components, not generic replacements. Whether you're a weekend basher exploring local trails or an experienced crawler pilot preparing for competition, maintaining your vehicle with quality spare parts from RC Model Shop ensures your TRX-4 or TRX-6 continues performing at its best for years to come.

Key Features

• Blue-seal construction — The precision rubber seals on these bearings keep dust, dirt and grime out of the ball races, which significantly reduces maintenance requirements and ensures your portal drive housings maintain smooth operation even after extended use in challenging conditions.
• Precise 12x18x4mm dimensions — These bearings are engineered to the exact specifications required for Traxxas portal drive housings, ensuring perfect fit and optimal load distribution across the critical pivot points that support your crawler's weight and articulation.
• Reduced friction operation — The sealed ball bearings roll with minimal resistance, which translates directly into smoother steering response, more predictable handling characteristics and reduced power consumption from your crawler's motor and servo systems.
• Genuine Traxxas part — As an official Traxxas replacement component, these bearings are manufactured to strict quality standards and are guaranteed to be compatible with all portal drive housings designed for use with TRX9845X specification bearings.
• Low-maintenance design — The sealed design dramatically reduces the frequency of cleaning and re-greasing compared to unsealed bearings, meaning you spend more time running your RC crawler and less time on maintenance.
• Extended component lifespan — By protecting the ball races from contamination, these quality sealed bearings help extend the overall service life of your portal drive housings and related drivetrain components.

Technical Performance

These blue-seal ball bearings represent precision engineering at its finest, manufactured to the demanding tolerances required for use in high-performance RC crawlers. Each bearing measures precisely 12x18x4 millimetres, with the outer diameter of 18mm designed to fit snugly into Traxxas portal drive housings while the 12mm inner diameter accommodates the shaft that transfers driving force through the system. The blue rubber seals are engineered from durable elastomer compounds that maintain their flexibility across the temperature ranges experienced during both summer outdoor RC sessions and cooler weather operation. The sealed design prevents water, sand, mud and dust from entering the races where the ball bearings roll, which is absolutely critical for RC vehicles used in outdoor terrain where these contaminants are inevitable. The quality of these seals directly impacts how often you need to service your drivetrain—sealed bearings can run substantially longer before requiring maintenance compared to open designs. A pair of these bearings is included, allowing you to service both portals if required or maintain a spare set for competition use. The smooth rolling action provided by quality ball bearings is noticeable in how your crawler responds to steering inputs and maintains traction through complex terrain, as reduced friction means more efficient power transfer and more responsive handling characteristics.

What's in the Box

• Blue-seal ball bearings 12x18x4mm x2

Frequently Asked Questions

• What are blue-seal ball bearings and why do they matter for my RC crawler? — Blue-seal ball bearings are precision-engineered components with protective rubber seals that keep dirt and moisture out of the bearing races. They matter significantly because the portal drive housings on crawlers like the TRX-4 and TRX-6 are exposed to dust, mud and sand during operation. Sealed bearings dramatically reduce maintenance requirements, maintain smoother operation, and extend the lifespan of your drivetrain components compared to unsealed alternatives.
• Are these bearings compatible with Traxxas TRX-4 and TRX-6 crawlers? — Yes, these TRX9845X bearings are genuine Traxxas components engineered specifically for use with portal drive housings on compatible models. If your RC crawler uses Traxxas portal axles with compatible housing designs, these bearings will fit perfectly and perform reliably.
• How often do I need to replace sealed ball bearings? — Quality sealed ball bearings like these typically last substantially longer than unsealed varieties because the seals prevent contamination from degrading the ball races. Under normal use, you may go an entire season or more between replacements. However, if you notice grinding noises, resistance to rotation, or visible seal damage, replacement is recommended.
• What's the difference between sealed and unsealed bearings for RC vehicles? — Unsealed bearings are cheaper but require frequent cleaning and re-greasing, especially after muddy or sandy conditions. Sealed bearings cost more initially but save enormous time on maintenance and provide more consistent performance. For serious crawlers operating in outdoor terrain, sealed bearings are the sensible choice.
• Can I fit these bearings myself? — Yes, fitting replacement bearings into portal drive housings is a straightforward task for anyone with basic RC maintenance experience. You'll need to carefully remove the old bearings, clean the housings, and press or seat the new bearings. Many RC enthusiasts perform this maintenance at home using simple tools, though some prefer to have a hobby shop handle bearing replacement if they're uncertain about the procedure.

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 bearing set, portal drive housings TRX9845X 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.