Tamiya TRF421 Pro Tourer Bearing Kits – All Options

Description

Complete Bearing Kits to suit the Tamiya TRF421 Pro Tourer. Multiple options are available on this listing, the drop down box above will give you all available options.
This car has the following Bearings:

3x6x2.5mm Bearings X 5 (4 Sway bars, 1 Upper deck)
3x7x3mm Bearings X 2 (Belt Tensioner)
4x8x3mm Bearing X 1 (Centre Pulley)
5x8x2.5mm Bearings X 2 (Diff internal)
5x9x3mm Flanged Bearing X 1 (Centre Pulley)
5x10x4mm Bearings X 8 (Wheel hubs)
10x15x4mm Bearings X 4 (2 Rear Diff, 2 Front Axle)

What comes with each kit option?

Standard Kit – Complete Standard Rubber Sealed Bearing Kit
V2 Premium Kit – Complete V2 Premium Metal Shielded Bearing Kit
Pro Racers V2C Kit – Complete Metal Shielded Bearing Kit with V2 Premium Wheel Bearings, Ceramic Drivetrain Bearings

V2 Premium Bearings vs Standard

Our Standard Bearings are ABEC 3 and designed specifically for RC Cars, they are better than the original factory bearings of most RC manufacturers. Our V2 Premiums are ABEC 7 which means they are more precise with closer tolerances, the individual components such as the balls are manufactured to a higher standard, the races are within .001mm. From our testing, we have found that the V2 Premiums remain smoother for longer, outlasting any standard bearing with less chance of a failure, they are made to the highest standard that our manufacturer can produce. The V2 Premium range of bearings are used by our racing team which consists of several current and past Australian Champions including Kyle McBride, Ryan Maker & Chris Sturdy, these guys rely on our product when travelling to compete internationally at the highest level.

Pro Racers V2C Kit

This kit was developed with the assistance of our Team Drivers. We found that Ceramic wheel bearings do not last as long as steel bearings, due to the hardness of ceramic balls and the conditions that wheel bearings endure, premature wear of the steel rings was found to be common in comparison to our V2 Premium Steel Bearings. Another factor is that wheel bearings generally spin 4 times slower than the driveline (dependant on gear ratio’s), Ceramic bearings are most advantageous at higher speeds, therefore there is less advantage to using them in the wheels. This was the result for both onroad and offroad cars across different platforms, offroad cars are more harsh on wheel bearings in terms of the impacts they face when landing jumps and riding through rough surfaces, onroad cars endure less bumps but more high speed cornering which places high loads on the balls and races, in all cases we found that ceramic bearings would prematurely wear compared to V2 Premium steel bearings when used in the wheels. Ceramic Bearings perform very well in spur gears and diffs with no performance or longevity issues. Another advantage, the V2C Kit is cheaper than a full ceramic kit.

Ceramic Bearings

Ceramic Bearings can run faster than all steel bearings due to the lower centrifugal force generated by the ceramic balls, ceramic balls are lighter and harder than steel, the speed increase for Ceramic Bearings is 30 – 40% with adequate lubrication. Ceramic Bearings are less subjected to ball skidding under initial acceleration / torque. This allows the bearing to last longer and be far more reliable. Low heat expansion allows the bearing retainers to last longer.

Plaig Bearings are a stronger, more reliable bearing with greater heat resistance and superior life to the standard factory bearings. We stock all other sizes of bearings for RC Cars and also sell Complete Bearing Kits for many popular brands of vehicles. If you can’t find the correct bearing by size or part number please Contact Us.
Click here for Detailed Bearing Specifications