Yokomo S4-002BRLA Aluminum Rear Bulk Head (Left) for YZ-4S and B-YZ4SF  [S4-002BRLA]

Yokomo S4-002BRLA Aluminum Rear Bulk Head (Left) for YZ-4S
Price:
NZD$32.00
Brand:
Yokomo
Model:
S4-002BRLA
GTIN:
0639342187522
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Spares / Hop-ups - Yokomo - YZ-4 category
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Left Rear Bulkhead Designed for YZ-4S Chassis

Supplied as model S4-002BRLA, this left-side aluminium rear bulkhead is made for Yokomo's YZ-4S family. It swaps in for the original left rear bulk head to provide a stiffer mounting point while keeping the factory attachment layout intact.

Fitment targets YZ-4S variants and identifies the listed B-YZ4SF chassis codes as compatible; always double-check your chassis designation prior to fitting. Machined from aluminium, the component improves structural stiffness and offers greater wear resistance than the stock plastic piece.

In tuning terms, an aluminium left rear bulkhead changes load transfer into the chassis and can sharpen rear response. Install S4-002BRLA when you want a more consistent rear traction profile and a firmer foundation for mid to high grip track tuning.

Specifications

  • Item Aluminum Rear Bulk Head (Left)
  • Material Aluminum
  • Model Number S4-002BRLA
  • Compatibility YZ-4S, B-YZ4SF

This aluminium left bulkhead is aimed at racers seeking a rigid rear mount on YZ-4S based platforms and fits using the chassis' original mounting points.
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.

What is S4-002BRLA intended for?

S4-002BRLA is an aluminium left rear bulk head for the Yokomo YZ-4S range, made to replace the original plastic part for increased rigidity.

Any special installation tips?

Clean the mounting faces, use the original fasteners, and torque to the chassis manufacturer's recommended values to avoid overstressing threads.

How does aluminium affect part longevity?

Aluminium resists abrasion better than plastic and holds its shape after repeated loads, giving longer service life under race conditions.

Will this change ride height or mounting alignment?

No — the part is manufactured to match the original geometry so ride height and attachment points remain the same when fitted correctly.

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