Modify S90+ Spring

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XTB Modify Irregular-Pitch Spring (S90+)

      • It is finely manufactured from A class piano wire.
      • Very durable and strong. 
      • Irregular pitch coiling for enhanced performance.
      • Very Consistent FPS
      • Easy to install.
      • Every spring has gone through vigorous and Sophisticated quality tests from the moment a new design leaves the software drawing through to final mass production.

The XTB Modify S90+ coil spring with irregular-pitch is designed for enhanced performance. Precision manufactured of the high-grade piano wire with high durability and strength, the XTB Modify S90+ is easy to install.