Serpent 401980 21T Midshaft Pulley Spare for Medius X20 Mini EP [SER401980]

Serpent SER401980 Midshaft Pully 21T X20M

Price:

£4.66

Brand:

Serpent

Model:

SER401980

Condition:

Brand New

Quantity:

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Description
FAQ

Refine drivetrain behaviour with Serpent 401980

The Serpent 401980 Midshaft Pulley 21T is an exact-fit spare for the Medius X20 Mini EP that helps even out power flow through the drivetrain. It is intended to lower mechanical losses and keep components performing longer between services.

Notable points about the midshaft pulley

Compatibility: Specifically made for the Medius X20 Mini EP, delivering a consistent fit and correct alignment.
Durability: Built from materials chosen to resist wear from frequent track use and spirited driving.
Performance: The 21T tooth arrangement tunes the balance between acceleration and top end for reliable on-track performance.

Can I reuse the bearings when swapping pulleys?

If the bearings are clean and spin freely without play they can be reused. Replace bearings showing roughness or play to avoid cutting short the life of the new pulley.

Will a 21T pulley suit tight circuits?

A 21T unit provides a balanced response useful on tighter tracks where acceleration and control are key, though final gearing choice depends on motor and pinion selection.

How do I check for correct gear mesh?

With the car on stands gently apply power and observe contact pattern, then set a small, even gap or slight tooth overlap as recommended by your chassis setup guide.