Yokomo S4-01077A 77mm Front Universal Shaft for YZ-4S - Heavy Duty Dogbones  [S4-01077A]

Yokomo S4-01077A Front Universal Shaft (77mm bone) for YZ-4S
Price:
CAD$42.84
Brand:
Yokomo
Model:
S4-01077A
GTIN:
0639342209811
Condition:
Brand New
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Yokomo S4-01077A 77mm Front Dogbone Upgrade for YZ-4S

Give your YZ-4S a reliable drivetrain boost with the Yokomo S4-01077A Front Universal Shaft. The precision 77mm dogbone is built to resist wear and deliver cleaner power delivery under race conditions. Made for the YZ-4S chassis, this shaft fits directly to reduce drivetrain lash and improve consistency.

Specifications

  • Length: 77mm
  • Compatibility: YZ-4S Chassis
  • Included: 2 pieces
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.

Which other Yokomo kits share the same front shaft fitment?

The S4-01077A fits YZ-4S and is also compatible with B-YZ4SF, B-YZ4SF2-1, MOR-010 and MOR-020 variants that use the same front shaft geometry.

How should I maintain the 77mm dogbones to avoid premature wear?

Inspect the dogbones for burrs and surface wear after heavy sessions, keep the joints free of dirt, and apply a light synthetic grease to the cups for smoother operation.

Will swapping to these shafts affect handling or wheel hop?

Upgrading to stronger dogbones can improve power transmission and reduce drivetrain flex, which often helps consistency; final handling still depends on setup and suspension tuning.

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