Works'91 TeamSpec Rear Shock Upgrade Longer Rear Body YZ-S4RW2 by Yokomo  [YZ-S4RW2]

Yokomo YZ-S4RW2 Aluminum rear shock body for Works\\\'91 TeamSpec
Price:
AUD$13.88
Brand:
Yokomo
Model:
YZ-S4RW2
GTIN:
3888
Condition:
Brand New
Quantity Discount
Unit Price You Save
2 $20.09 each $-12.42 or -45%
3+ $17.36 each $-10.43 or -25%
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Tuning Advantages for Rear Traction

This aluminum shock body is intended for the Works'91 TeamSpec series and gives increased rear stroke over the standard Works'91 unit. Use the added length to explore setup changes that influence traction and rear balance during cornering.

It is listed for the YZ-W91TS platform and is compatible with YZ-W91 chassis; the part is supplied as the aluminum outer body only and does not include pistons or shafts, which must be retained or sourced separately.

For hobbyists familiar with shock servicing the swap is a common upgrade; changing the body alters travel and preload characteristics and will require spring and oil adjustments to reach the desired handling behavior.

Packing includes

  • Rear shock body - 1 pcs

Specifications

  • Item Rear shock body
  • Material Aluminum
  • Model Number YZ-S4RW2
  • Compatibility YZ-W91TS, YZ-W91

Use this component to extend tuning range at the rear; trial different springs and oils and confirm shaft and seal compatibility before committing to a final setup.
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 should I change springs after fitting the longer body?

Expect to test stiffer or softer springs depending on whether you want more support or compliance; the extended stroke increases travel, so re-evaluate spring rate to match your desired ride height and damping.

What oil changes are recommended with increased stroke?

Thicker oil can slow compression and rebound if extra travel makes the rear feel too active; experiment with oil weight to control response while monitoring handling trade-offs.

Will handling improve for traction setups?

The extended body gives more adjustment range; with the right springs and oils you can increase rear traction, but results depend on overall setup balance and driving conditions.

How do I measure the new travel range?

Measure from mounting eye to cap at full compression and full extension, compare to stock values, and adjust preload to set static ride height before on-track tuning.

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