Yokomo RP-102A Titanium Φ4.8 Kingpin Ball - Lightweight BD9 Upgrade  [RP-102A]

Yokomo RP-102A High precision titanium ?4.8 King pin ball
Price:
CAD$12.28
Brand:
Yokomo
Model:
RP-102A
GTIN:
0639342209255
Condition:
Brand New
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Lightweight Titanium Kingpin Ball for BD9

The Yokomo RP-102A Titanium Φ4.8 Kingpin Ball is machined to boost BD9 chassis response. Made from high-grade titanium, it cuts upper chassis and unsprung mass to deliver crisper turn-in and more predictable handling on the track. A fine surface finish helps smooth articulation and repeatable steering feel for club and competitive racers.

Benefits of Titanium in RC Steering Parts

Titanium offers an excellent strength-to-weight balance that suits performance parts. Fitting the Yokomo RP-102A Kingpin Ball can reduce rotating mass at the front end, which helps the car react faster to driver inputs without sacrificing durability.

Engineered to Match BD9 Geometry

Designed with BD9 fitment in mind, these kingpin balls install cleanly into the stock geometry and maintain alignment under load. The lighter component helps preserve chassis balance for sharper cornering and improved mid-corner control.
Remark :
Due to limited stock availability, please notice that some Yokomo items may have to order from the factory and the ready time is around 4-6 weeks. Customer purchases the item is assumed to accept the waiting time which allows us to order directly from the manufacturer if the item is out of our warehouse.

How will this affect my BD9's steering response?

Reducing upper chassis and unsprung mass with the RP-102A improves initial turn-in and steering responsiveness, making the car feel quicker to driver inputs during direction changes.

What tools or prep are needed for installation?

Basic hex drivers and a clean workspace are enough. Inspect mating parts for wear, and use a small amount of suitable grease where metal contacts polymer to ensure smooth operation.

Can I mix this with standard steel kingpin balls?

You can use titanium upper balls with steel lower balls if the dimensions match, but double-check fit and trim any interference before running. Consistent material pairing can simplify setup.

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