XRAY 338281 Rear Progressive Spring Set C=3.7-4.7 - Precision Matched  [XR-338281]

XRAY 338281 Progressive Spring Set C=3.7-4.7 - Rear (2)
Price:
£10.80
Brand:
XRAY
Model:
XR-338281
Condition:
Brand New
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Refined Rear Performance with XRAY Springs

The XRAY 338281 Progressive Spring Set is engineered to refine rear chassis response by offering a compression range from 3.7 to 4.7. The progressive curve delivers compliant initial movement and increases support as the spring compresses, aiding stability under heavier loads.

Strict Matching for Repeatable Handling

Each spring undergoes measurement and matching to ensure identical characteristics across pairs. XRAYs quality control emphasises consistency so adjustments translate reliably into on-track behaviour.

Marked Finish for Quick Selection

The pearl-grey finish and laser-engraved identifiers allow fast recognition of spring rates during setup work. Clear markings reduce the chance of fitting the wrong rate when making quick changes between sessions.
Remark :
Due to limited stock availability, please notice that some XRAY 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 the main advantage of a progressive spring in the rear?

Progressive springs give a softer initial response for grip while stiffening with deeper travel to control roll and squat, providing a wider usable tuning window than a linear spring.

Do I need to match spring rates left to right?

Yes, matching is important for consistent left-right behaviour. XRAYs matching process reduces imbalance and helps maintain predictable handling when cornering at speed.

Are the laser markings durable?

The laser engraving is designed for clear identification and should remain legible under normal use, but inspect markings regularly and replace springs if corrosion or wear obscures the ID.

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