Yokomo B9-644SSA BD9 Main Gear Shaft Set Performance Kit  [B9-644SSA]

Yokomo B9-644SSA Main Gear Shaft Set
Price:
NZD$26.88
Brand:
Yokomo
Model:
B9-644SSA
GTIN:
0639342182572
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Spares / Hop-ups - Yokomo - MRTC-BD919S category
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Improve BD9 Drivetrain Precision with Yokomo B9-644SSA

The Yokomo B9-644SSA Main Gear Shaft Set is tailored for BD9 chassis use and helps keep gear trains running true. Precision machining reduces unwanted play and supports consistent torque delivery during intense sessions.

Made for MRTC-BD919 Series Chassis

This B9-644SSA set from Yokomo is compatible with MRTC-BD919 and MRTC-BD919S models and is manufactured to withstand the demands of regular race use. The materials and finish are chosen for lasting performance.

Benefits for Club and Race Days

Using the B9-644SSA can sharpen throttle response and improve straight-line roll, making setup changes more predictable. It is a practical upgrade for drivers chasing cleaner drivetrain behaviour.
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.

Can I use this with my existing BD9 gearbox bearings?

Yes, the B9-644SSA is compatible with standard BD9 gearbox bearings provided they are the correct size and in good condition. Replace worn bearings for best results.

Does this shaft require special lubrication?

Use a light gear oil or grease recommended for RC gear sets. Avoid overlubricating as excess grease can attract debris.

Will this affect gear ratios or gearing options?

The shaft itself does not change gear ratios. It improves shaft stability and power transfer while you use your chosen pinion and spur gear combination.

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