Evolution Power Spring E120 Performance EA0103P

Power Spring E120 Performance Center

£9.95

Upgrade spring engineered for 360+ FPS AEG builds
High-torque design suited to performance and DMR setups
Precision wound for consistent shot-to-shot power
Made in Italy by Evolution International to a high standard
Fits standard AEG gearbox spring guides
A cost-effective way to raise the power of your gearbox
Part of Evolution’s Performance Center upgrade range

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Description
Specification

Serious power for your AEG

The Evolution Power Spring E120 Performance Center is a high-torque main spring engineered for builds targeting 360+ FPS. If you are chasing more range and punch from a DMR or high-power skirmish setup, this is the heart of the upgrade.

Consistency you can feel

Precision wound in Italy, the E120 delivers even, repeatable compression for consistent shot-to-shot velocity. That translates to tighter grouping and predictable range once your hop and barrel are dialled in.

Built to fit

The spring is designed for standard AEG gearboxes, dropping onto the usual spring guide during a rebuild. Because it loads the gearbox harder, we recommend pairing it with a reinforced piston, piston head and quality bushings or bearings to keep everything reliable.

Know your limits

Most UK sites chrono AEGs around 328 to 350 FPS, so a 360+ spring is best matched to DMR builds or carefully tuned to your local rules. Our in-house repair and tech team in Kent can fit and chrono it for you, and you will find more upgrade parts in our airsoft accessories range.

Product information reviewed by James Smith. Every gun is checked & serviced by our Rochester workshop before dispatch.

General
Brand	Evolution International
Other
Model	Power Spring E120 Performance Center
Product code	EA0103P
Type	AEG main upgrade spring
Power rating	360+ FPS (approx, build dependent)
Design	High-torque performance spring
Compatibility	Standard AEG gearboxes
Category	Gearbox internals
Country of origin	Italy

Recommended upgrades & accessories

Frequently asked questions

What FPS will this spring give me?

Evolution rates the E120 for setups producing 360+ FPS. Final velocity depends on your cylinder, barrel length, air seal and other components, so treat it as a guide figure.

Which gearboxes does it fit?

It is designed for standard AEG gearbox spring guides. Check your site or field FPS limits before fitting a higher-power spring.

Do I need any other parts to fit it?

The spring drops into a standard AEG gearbox, but at this power level a reinforced piston, piston head and bushings or bearings are strongly recommended to handle the extra stress.

Is this legal for skirmish use?

Most UK sites cap AEGs around 328 to 350 FPS on 0.20g BBs, so a 360+ spring may need chrono adjustment or is better suited to DMR builds. Always check your site limits first.

Where is it made?

It is manufactured in Italy by Evolution International as part of their Performance Center upgrade line.

Power Spring E120 Performance Center