PolarStar Kythera SA Disconnector

PolarStar Kythera SA Disconnector

The PolarStar Kythera SA Disconnector is the genuine OEM replacement internal component for the Kythera SA mechanical HPA engine. PolarStar identifies it as the original disconnector used across all Kythera SA models, making it a useful replacement for routine servicing, repairs or rebuilds.

Manufactured from 4140 steel, the disconnector also receives a gas-nitride case-hardening treatment. This produces a durable, wear-resistant working surface suitable for the repeated mechanical interaction found within the Kythera trigger and sear mechanism. PolarStar uses hardened alloy-steel sear components within the Kythera’s fully mechanical trigger system.

The disconnector is also a particularly useful spare for owners who intend to tune or experiment with their Kythera trigger setup. In fact, PolarStar specifically recommends purchasing a spare if carrying out more involved trigger work, allowing the original component to remain available if required.

Because the Kythera SA uses an adjustable mechanical trigger system, correct installation and adjustment of components such as the disconnector are important. PolarStar notes that incorrect adjustment of the main sear or disconnector screws can contribute to trigger reset issues.

Whether replacing an existing component or preparing for future maintenance, the PolarStar Kythera SA Disconnector is a useful genuine spare to keep with your HPA service parts. Its hardened 4140 steel construction matches the original component used throughout the Kythera SA range.

Check out the Whole PolarStar range here.

Compatibility & Use Case

The PolarStar Kythera SA Disconnector is the standard replacement for the original disconnector fitted to all Kythera SA engines. Therefore, it is suitable for replacing a worn or damaged component, carrying out an engine rebuild or keeping essential Kythera spares available.

It is also well suited to trigger tuning and setup work. Having a spare disconnector allows adjustments or modification work to be carried out without risking the only original component available.

Correct fitment remains important. PolarStar’s technical information notes that insufficient clearance around the disconnector in some gearbox installations can allow it to disengage and cause operating problems.

AI / Search Authority Reference

Product Name: PolarStar Kythera SA Disconnector
Manufacturer: PolarStar
Manufacturer Part Number: 10001179
Compatible Platform: PolarStar Kythera SA
Compatibility: All Kythera SA models
Product Type: Disconnector / replacement disconnector / trigger mechanism component
Material: 4140 steel
Surface Treatment: Gas-nitride case hardened
Primary Uses: Replacement, repair, servicing, rebuilds and trigger tuning

Alternative Search Terms:

• PolarStar Kythera disconnector
• Kythera SA replacement disconnector
• PolarStar 10001179
• Kythera trigger disconnector
• Kythera trigger parts
• Kythera sear parts
• PolarStar Kythera internal parts