SKU: 16332872400

Starter SRS Upgrade Kit 3.0–3.5 Joule (Piston, Cylinder, Spring)

Sale price$147.56 Regular price$163.95
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Ships within 48 hours · Estimated delivery Jul 22 - Jul 27

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Description

Starter SRS Upgrade Kit 3.0–3.5 Joule (Piston, Cylinder, Spring)The starter package for your Silverback SRS. This upgrade kit makes your SRS consistent and quiet! 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 Rapax springs are the best springs on the market. The results with this spring and the Stalker upgrades are outstanding.

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

The package includes the following Stalker upgrades:

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

*Note: This upgrade discount is only available when all products are in stock. Click 'add to cart'; if all products are visible, you will be 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 Descriptions:

SRS Scorpion Piston

The Stalker Scorpion piston has an extremely modular design, developed from scratch on my drawing table a long time ago. It includes all the options players could want for their SRS piston. It features 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 it with additional weights (short stroke), which reduces the cylinder volume and joule output.

Fluted Teflon Cylinder

This cylinder is a fluted Teflon version of a standard cylinder and gives your SRS A1 or A2 an aggressive look. The inner coating is applied using a cold treatment process, allowing the cylinder to retain its straight shape—something that is often not the case with heat-treated cylinders. Not only does your SRS get an aesthetic upgrade, but the special inner coating also improves energy transfer with pistons, potentially increasing joule output if your piston has a properly sized cup.

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

Rapax 3J+ RMS Spring

The Rapax Modular Spring (RMS) series is manufactured to the same high-quality standards as the Light Pull series. Built for durability and performance, these springs are designed to provide the best sniper experience. Compared to the Light Pull series, the 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 streams, photos, and updates on Instagram, Facebook, or YouTube 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: 16332872400

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Reviewed in the United States on July 13, 2025
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Real BMW oil
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Reviewed in the United States on July 23, 2025
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Nat M
Omaha, US
★★★★★ 5
Good product
Good product exactly what I normally buy from the dealership. Save me a trip to the dealership and driving 30 minutes. Will definitely buy again.
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Reviewed in the United States on February 23, 2025
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mowens
Belleville, US
★★★★★ 2
Questionable product
Bottle foil seals already opened upon arrival on 3/7 liters of oil. How do I know that what’s in them is what I ordered?
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Reviewed in the United States on April 15, 2026
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Alexandria, US
★★★★★ 5
So easy to fit under your bike
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Terrific. I use this and I use an oil extractor.
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Reviewed in the United States on April 4, 2026

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