Yokomo BM-S143A 1.4X3 Precision Shock Pistons  [BM-S143A]

Yokomo BM-S143A 1.4X3 12 shock piston (Black)
Price:
CAD$8.52
Brand:
Yokomo
Model:
BM-S143A
GTIN:
0639342205981
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Dial in Smoother Damping with Yokomo BM-S143A

Made for the B-MAX line, the Yokomo BM-S143A 1.4X3 shock piston uses three precision-drilled 1.4mm holes to soften the initial shock movement compared to a two-hole piston. That extra metering gives a more controlled feel at turn in and makes the car easier to place on varied surfaces. It is a useful upgrade for hobbyists tuning ride quality across multiple Yokomo chassis.

Supported Models

  • B-YZ2CA
  • B-YZ2DT
  • B-YZ2DTM
  • B-YZ4SF
  • B-YZ2DTMW
  • B-YZ2DTM2
  • B-YZ2CAL2
  • B-YZ2T
  • B-YZ2DTM2S
  • B-YZ2DTM3
  • B-YZ2CAL3
  • B-YZ2DTM31-1
  • B-YZ2CAL31-1
  • SOR-010
  • ROR-010
  • ROR-010RTR
  • ROR-010RTR-1
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 the 1.4X3 piston alter shock response?

The triple hole layout smooths the initial movement of the damper, producing a gentler onset and more predictable transition into mid stroke. Drivers notice easier turn entry and steadier traction when swapping from a two-hole piston.

Will BM-S143A fit my B-MAX variant?

This piston is specified for a wide range of B-MAX models shown above. Confirm part compatibility with your chassis parts list before fitting, but it is intended to be broadly interchangeable within the B-MAX family.

Any setup tips after installing 1.4X3 pistons?

After installation, check your shock oil and spring rate as the piston alters damping feel. Start with small oil changes or tire pressure tweaks and test laps to refine rebound and compression settings.

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