Yokomo MS-503GP 38T Aluminium Pulley for BD11 BD12 MS1.0  [MS-503GP]

Yokomo MS-503GP Machine cut 38T pulley for BD11/12/MS1.0 aluminum gear differential case
Price:
£14.14
Brand:
Yokomo
Model:
MS-503GP
GTIN:
639342229048
Condition:
Brand New
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Fine-Tuned Pulley for Yokomo Gearboxes

The MS-503GP 38T pulley from Yokomo is crafted from machined aluminium to improve the service life and meshing of BD11, BD12 and MS1.0 gear differentials. It is intended to be a direct-fit, durable replacement for stock components.

Why the MS-503GP Stands Out

Precision cutting of the teeth reduces irregular motion in the gear train and helps maintain consistent drive delivery, which benefits lap time repeatability and part longevity.

Suitable for Track Use and Practice

The lightweight alloy construction strikes a balance between strength and low mass, helping with throttle response while standing up to the demands of regular track running.

Specifications

  • Material: Aluminum
  • Teeth: 38T
  • Compatibility: BD11, BD12, MS1.0
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.

Is the MS-503GP a direct swap for stock pulleys?

In most cases it is a direct replacement for the factory pulley on BD11, BD12 and MS1.0 diffs, but check screw length and clearance during installation.

Should I change diff oil after fitting this pulley?

It is good practice to inspect and refresh diff oil when performing upgrades to ensure consistent performance and to confirm no contamination enters the unit.

How long can I expect it to last?

Longevity depends on conditions and maintenance, but aluminium pulleys typically outlast plastic originals when kept clean and correctly installed.

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