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  • Amped Custom Poppet Shims (Fusion Engine)

These poppet shims are used to fine tune your stock or low flow poppet.
(If you are purchasing a poppet, you can receive a shim kit at a discounted rate on the Low Flow Poppet item page)

Each shim kit comes with the four following sizes:

  • 1x Pink .015
  • 1x Yellow .020
  • 1x White .025
  • 1x Coral .030
Each gun will require fine tuning to find the correct size to be the most efficient for your setup. Most PolarStars in our experience are most efficient/accurate/reliable between the 70-90 PSI range, however we have customers who have been known to go lower by adjusting their settings. Each setup may need to be tuned differently. We have also found that running larger bore nozzles such as black, silver, and red allow for a wider range of PSI adjustment and performance/efficiency benefits when coupled with our low flow poppets and/or shim kits.

Basic Instructions:
  1. Before adding a shim to your poppet, setup your PolarStar and tune it to your liking. Set it so that you are at your desired FPS and PSI. Record these numbers.
  2. Insert the lowest shim (Pink .015), record your results. Then continue to the next shim. Continue this till you notice a drop in your velocity. If the shim thickness is too large, you will notice a significant drop off in velocity and should go back to the previous shim.
  3. Typically most setups work with the middle ground shim (White .025), this will give you a benefit without all the tuning, however, if you want the most efficient setup, you will need to experiment with the other size shims.
  4. Once you pick your final shim size, double check your settings and finish fine tuning your psi and fcu to accommodate the new shim installation.
It is recommended to not go above .035 in combined thickness due to the Poppet valve traveling no more than close to .040.

Enjoy your new shim kit and don't be afraid to experiment!

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Amped Custom Poppet Shims (Fusion Engine)

  • Product Code: 5048a
  • Availability: 4

  • $22.00

These poppet shims are used to fine tune your stock or low flow poppet.
(If you are purchasing a poppet, you can receive a shim kit at a discounted rate on the Low Flow Poppet item page)

Each shim kit comes with the four following sizes:

  • 1x Pink .015
  • 1x Yellow .020
  • 1x White .025
  • 1x Coral .030
Each gun will require fine tuning to find the correct size to be the most efficient for your setup. Most PolarStars in our experience are most efficient/accurate/reliable between the 70-90 PSI range, however we have customers who have been known to go lower by adjusting their settings. Each setup may need to be tuned differently. We have also found that running larger bore nozzles such as black, silver, and red allow for a wider range of PSI adjustment and performance/efficiency benefits when coupled with our low flow poppets and/or shim kits.

Basic Instructions:
  1. Before adding a shim to your poppet, setup your PolarStar and tune it to your liking. Set it so that you are at your desired FPS and PSI. Record these numbers.
  2. Insert the lowest shim (Pink .015), record your results. Then continue to the next shim. Continue this till you notice a drop in your velocity. If the shim thickness is too large, you will notice a significant drop off in velocity and should go back to the previous shim.
  3. Typically most setups work with the middle ground shim (White .025), this will give you a benefit without all the tuning, however, if you want the most efficient setup, you will need to experiment with the other size shims.
  4. Once you pick your final shim size, double check your settings and finish fine tuning your psi and fcu to accommodate the new shim installation.
It is recommended to not go above .035 in combined thickness due to the Poppet valve traveling no more than close to .040.

Enjoy your new shim kit and don't be afraid to experiment!

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Tags: Amped Airsoft, HPA, Parts, Polarstar Parts amped, custom, poppet, shims, (fusion, engine), hpa, accessories