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Established 2006. Kent's Only Authorised 5.11 Tactical Retailer

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The unsung heroes of a smooth gearbox

Bushings do a quiet but critical job: they support the gear axles as they spin. If they are worn, cheap or out of true, the whole gear set suffers, and you feel it in rough cycling, lost efficiency and premature wear. These ZCI 8mm bushings are a solid, no-drama upgrade to put that right.

Built to take a beating

Machined from stainless steel, these bushings are made to cope with the loads that high-torque and high-speed builds put through a gearbox. Unlike ball bearings, solid bushings are more forgiving of hard springs and hard use, which is exactly why many experienced techs choose them for reliability first builds.

Keep everything aligned

Well-made bushings hold the gears in proper alignment, and alignment is what keeps a gearbox running smoothly shot after shot. Getting this foundation right pays off across the whole rebuild.

Check your fitment first

These are 8mm bushings, so they only suit gearboxes designed to accept 8mm bushings or bearings. Measure or check your gearbox before ordering. Browse more airsoft parts, or let our Kent repair workshop fit them for you.

General
BrandZCI
Other
TypeGearbox bushings
Size8mm
MaterialStainless steel
QuantitySet of bushings
CompatibilityGearboxes built for 8mm bushings/bearings
ApplicationAirsoft AEG gearbox rebuilds and upgrades
Fitment NoteConfirm your gearbox is 8mm before ordering

Frequently asked questions

Will these fit my gearbox?

They fit gearboxes designed to take 8mm bushings or bearings. Some gearboxes use 6mm, 7mm or 9mm, so measure or check your gearbox spec before ordering.

What is the difference between bushings and bearings?

Bushings are solid, one-piece supports for the gear axles. They are more durable and forgiving of hard springs and abuse than ball bearings, which is why many techs favour them for high-torque builds.

Are these better than my factory bushings?

Stainless steel bushings from a known brand like ZCI are a reliable upgrade over worn or generic factory parts, helping keep the gears aligned for smoother cycling.

Do I need any special tools to fit these?

Fitting bushings means opening the gearbox, so it is a job for someone comfortable with internal work. If you are not, our workshop can handle it for you.

Is there an age restriction on this part?

No. It is an internal spare part with no age restriction and no UKARA requirement.