The RRR is a further refinement of the very successfull RR model. The overall gear ratio has been changed to further optimize to keep the .12 engines in their powerband. The taller ratio moves the power band from low end acceleration to the mid range and top end performance. This allows the RRR to hook up off the turn and drive much easier. The center of gravity has been lowered and the weight bias has been moved forward to make the RRR pull hard off the corner and switch directions much quicker. Add to this more adjustability in the suspension and lower rotating mass and you have a winnerRevamped drive system with total focus on achieving lower rotating mass. Small pulleys front and rear allow for lower differential mounting, therefore lowering the center of gravity and rotating mass. Front one-way included. Remodeled 2 speed with .8 module gear. (finer pitch) Upper arm pivots have 4-step cam adjustment for easy roll center changes. Diff unit can be installed or removed with just four bolts for fast and easy replacement. Centered front diff enables equal length axles on left and right sides. Uses 7075S grade milled aluminum main plate and carbon upper plate for increase rigidity. Front tweak can be adjusted independent of the sway bar. The rear sway bar mounts ahead of the rear arms allowing for more rear shock positions. Lay-down mounting of the throttle servo produces a lower center of gravity. The bellcrank ratio produces a more positive throttle response. New fuel tank with battery mounted directly underneath for better weight distribution farther forward. The creates both a lower center of gravity and increased concentration of mass. Several more rear shock mounting position for better adjustability. Reduced overhang behind the rear diff further concentrates mass. New rear hubs allow for easy roll center adjustments

This ball bearing kit contains the following ceramic bearings

4 - 12x18 mm

2 - 6x10 mm

4 - 10x15 mm

10 - 6x12 mm

1 - 5x10 mm

1 - 5x8 mm

Kyosho ULTIMA RB5 Ceramic Bearing Kit

$89.99 $67.49 Save $22.50

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Featuring the latest racing specifications, the Kyosho Ultima RB5 represents the ultimate in pure 2WD racing buggies. Designed without compromise from the ground up to build the best racing buggy chassis possible. A low center of gravity, restriction of rotating moment, high agility, and ease of control while producing sharp response, are all realized at the highest level.

Chassis - The chassis plate is light and strong, featuring a specially formulated carbon fiber composite for the best balance of performance and durability. Strategic braces molded into the chassis enhance the stiffness without adding any unnecessary weight. Separate front and rear
Transmission - The new transmission features a smaller, more compact housing that keeps the motor as low and close to the transmission as possible, which reduces CG and improves bump handing. The three-gear transmission features an internal ball differential that uses standard 3/32-inch diff balls and 1/16-inch thrust balls. The differential is also externally adjustable, and a dust cover fits over the adjustment holes so the thrust bearing lasts much longer. An injection molded gear cover is included, which better fits the motor plate to minimize dust and debris for longer gear life.
Front Suspension - Longer, straighter and symmetrical suspension arms connect to a narrow front bulkhead. The bumper/skid plate, suspension block, nose plate and front bulkhead all come together to form a very rigid assembly, to which the front suspension arms mount. The standard position of the suspension mount produces 25 degrees of hinge pin angle in the front suspension arms, but simply flipping the suspension mount increases the hinge pin angle to 30 degrees. The added flexibility of having adjustable hinge pin angles means you have more options when it comes to setting up your car. Like the rear arms, a single replacement arm can be used on either side of the car.
Rear Suspension - The rear suspension arms are symmetrical so a single replacement arm can be used on either side of the car, saving money and space inside your pit box because you don't need to carry as many replacement parts. The inside of the arms are attached to the chassis using separate suspension mounts, which will allows anti-squat adjustment. The rear wheel hubs feature three lower hinge-pin holes, which allow modification of the ride height with minimal disturbance of the suspension geometry. Vertical ball studs for the both the inner and out rod ends of the upper link mean the rear suspension geometry can be fine-tuned with shims.

Our Ceramic Ball Bearing kit for the ULTIMA RB5 contains the following bearings and will also work in the ULTIMA RB5 SP

6 - 5x8 mm ball bearings

12 - 5x10 mm ball bearings

2 - 10x15 mm ball bearings