Yokomo BD9 HVF 19.1mm Shock Shaft - B9-S5SHVFA  [B9-S5SHVFA]

Yokomo B9-S5SHVFA HVF Shock shaft (19.1mm/Heavy fluorine coat) for BD9
Price:
CAD$29.54
Brand:
Yokomo
Model:
B9-S5SHVFA
GTIN:
0639342182824
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Spares / Hop-ups - Yokomo - MRTC-BD919S category
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HVF shock shaft optimised for BD9

The Yokomo B9-S5SHVFA HVF shock shaft is a 19.1mm RC shock shaft finished with a heavy fluorine surface treatment to lower friction and extend service life. Developed in collaboration with AXON, the component targets minimal bearing and seal resistance to deliver a smoother damper action on BD9 series touring car chassis.

On track this shaft reduces stick-slip at the sliding interface so the shock assembly responds to small inputs with greater consistency, helping traction while you fine tune damping. Long-term testing by the development team showed improved durability compared with prior surface finishes.

Packing includes

  • Shock shafts - 4 pcs

Specifications

  • Item Shock shaft (19.1mm)
  • Material Heavy fluorine coat
  • Model Number B9-S5SHVFA
  • Compatibility BD9, MRTC-BD919, MRTC-BD919S

Compatible Models

  • MRTC-BD919
  • MRTC-BD919S

For 1/10 BD9 platforms this HVF shaft suits drivers and tuners seeking reduced damping friction and reliable, repeatable shock action in competition-style suspension setups.
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 do I install these shafts into BD9 dampers?

Installation follows standard BD9 shock rebuild steps: remove the damper body, extract the old shaft and piston, fit the new B9-S5SHVFA shaft with correct seals and rebuild in the original order. No special proprietary tools are required beyond common hobby tools.

What comes in the box with the shaft?

The pack includes four heavy fluorine coated shock shafts, ready to replace the shafts in a standard BD9 shock set.

Will the heavy fluorine finish improve longevity?

Yes, the heavy fluorine surface reduces wear from seals and sliding parts, which the development team observed as better longevity versus older coatings during endurance trials.

Any special setup tips when fitting these shafts?

After fitting, check piston movement for free travel and confirm seal seating. Because friction is lower, you may need to slightly adjust damping or oil grade to retain your preferred rebound and bump feel.

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