SKU: 58669174851

Starter SRS Upgrade Kit 2.0–2.5 Joule (Piston, Cylinder, Spring)

Sale price$121.95 Regular price$135.50
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Ships within 48 hours · Estimated delivery Jul 19 - Jul 24

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Description

Starter SRS Upgrade Kit 2.0–2.5 Joule (Piston, Cylinder, Spring)The Starter package for your Silverback SRS. This upgrade kit makes your SRS consistent and silent! The package includes the following Stalker upgrades! The package includes the following Stalker upgrades. Stalker SRS Scorpion Ultimate Edition Stalker SRS Fluted Teflon Cylinder Stalker Official Logo Patch We strongly believe that the Rapax springs are the best springs on the market. The results with this spring and the Stalker upgrades are perfect.

The Starter package for your Silverback SRS. This upgrade kit makes your SRS consistent and silent! The package includes the following Stalker upgrades!

The package includes the following Stalker upgrades.

We strongly believe that the Rapax springs are the best springs on the market. The results with this spring and the Stalker upgrades are perfect.

*Note: This upgrade discount is only available when all products are in stock. Click 'Add to cart'; if all products are visible, you are able to purchase this kit with the mentioned discount. If the products are not in your shopping cart, you will see a blank page, meaning one of these products is not available.

Product Description:

SRS Scorpion Piston

The Stalker Scorpion piston features an extremely modular design that was created from scratch on my drawing table a long time ago. It includes all the options players could want for their SRS piston. It is a unique concept where six weights form the body itself. As the piston is made up of these weights, it is also possible to extend the piston with additional weights (short stroke), which in turn reduces the volume of your cylinder and joule output.

Fluted Teflon Cylinder

This cylinder is a Teflon fluted version of a standard cylinder and makes your SRS A1 or A2 look outstanding. The inner coating treatment is a cold process, so the cylinder retains its straight shape, which is often not the case with heat-treated cylinders. Your SRS not only gets an aesthetic upgrade, but the cylinder also features a special inner coating that provides better energy transfer with pistons and may increase your joule output if your piston has a correctly sized cup.

  • This cylinder is fully compatible with both Silverback SRS A1 and A2 receivers.
  • This cylinder thread works with both the A1 and A2 bolt handles.
  • This cylinder works with aftermarket pistons.

Rapax 2J+ RMS Spring

The Rapax Modular Spring (RMS) series is manufactured to the same quality standards as the Light Pull series springs. Built for durability and performance, they are designed to provide the best sniper experience. Compared to the Light Pull series, RMS springs are considerably shorter, have a slightly heavier pull, and offer quieter shots. Additionally, RMS springs are electrically coated to prevent rust, ensuring smoother operation on the spring guide.

If you have any issues or questions about this or other Stalker products, please visit our Stalker Owners Group on Facebook here: https://www.facebook.com/groups/329589544772075/

You can follow all my live feeds, photos, and updates on my Instagram, Facebook, or YouTube channels here:

Facebook: https://www.facebook.com/StalkerAirsoftDesigns/
Instagram: https://www.instagram.com/stalkerairsoftdesigns/
YouTube: https://www.youtube.com/channel/UCWsBiSHlu-lbcnGQWAkeJWQ

For more information about Stalker products, tech & crafting guides, please visit: www.stalkerairsoft.com

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 58669174851

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Normand H. P.
Omaha, US
★★★★★ 5
Good value ...
Size: Large, Color: Green
Top quality, well made shirt, lightweight great for summer use and to fold up sleeves, like I do .
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Reviewed in the United States on May 11, 2026
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Angela
Dallas, US
★★★★★ 1
NOT SLIM FIT.
Size: Large, Color: White
NOT A SLIM FIT. Misleading. White is off-white, cream. Not neutral, bright white. Decent material. Ok quality. Textured, thin but not too thin. Dressy, not very casual.
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Reviewed in the United States on June 4, 2026
K
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Karl L Packer
Phoenix, US
★★★★★ 5
Classy and Stylish, Very comfortable.
Size: XX-Large, Color: Blue
Comfortable, Great Value, Quality feel. Love it!
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Reviewed in the United States on April 30, 2026
S
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Sierra & Matt
Charlottesville, US
★★★★★ 5
Comfortable & Dad-Bod Approved!
Size: X-Large, Color: White, Size: X-Large, Color: White
I purchased this shirt in advance of our 10th Anniversary Cruise, and I'll say it was a success! I had never worn a shirt like this before, but I am now a fan. Cool, breathable, comfortable, and my wife loved it! Definitely Dad-Bod Approved. Quality was nice and I think was priced fairly well (might have bought on a sale). The size was perfect. I'm 6'2", 275lbs in these photos, and the XL was a great fit.
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Reviewed in the United States on December 4, 2024
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RaymondFRevalee
Bozeman, US
★★★★★ 4
Not bad so far
Size: Small, Color: Light Yellow
mixed feelings about the quality... only worn/washed once and there are some dangling threads which I had to cut off which might lead to further degradation of longevity etc. The fit is a bit snug between S and M, I chose small regarding the closest fit to my chest size but it's ok. The fabric is thin so if you are a guy that doesn't mind showing off your form and fitness this shirt is flattering. The fabric is texture, light and thin so there is comfort regarding the lightness of wearing it. One could go a size larger for looser fit and more comfort but I actually like the tighter fit.
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Reviewed in the United States on June 9, 2025

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