Starter SRS Upgrade Kit 2.0–2.5 Joule (Piston, Cylinder, Spring)
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 8 - Jul 13

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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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Verified Purchase
Jan
Birmingham, US
★★★★★ 5
Definitely Worth It
Quick and easy process. Coffee maker died and I had the insurance. Refunded and only ended up paying the price of insurance. Would do it again!
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Reviewed in the United States on January 24, 2026
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Verified Purchase
Chris
Lexington, US
★★★★★ 5
Claim was easy, speedy, and Amazon gift card was applied almost immediately.
I had to make a claim for a Ninja blender that was emitting an odor of burning or melting wires. I called a service representative thinking I might encounter a problem and was surprised. The agent was helpful and made the entire process so easy I applaud her! The Amazon gift card was posted to my account almost immediately after UPS picked the product up. I have decided that for products with a large number of parts and electronics that can fail I will purchase Asurion protection.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026
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Verified Purchase
Sharon A. Hall
Chelsea, US
★★★★★ 1
Asurion "Assures" nothing!
Asurion has terrible Customer Support. All machine based. They give you no phone # for human interaction. Their online Support process is very close-ended. It is a checklist designed to frustrate purchasers whose issue lies outside only the very issue. My issue: I bought "Cuisinart TOB-40FR Custom Classic Toaster Oven Broiler, Silver (Renewed)" on May 26, 2024. It stated it had a 90 day warranty. So I bought an Asurion Protection Plan also to cover it for 3 years. The toaster started flaking off metal finish inside the oven over the cooking area. I tried to file a claim with Asurion and they told me the Manufacturers warranty was still in effect and I should contact Cuisinart. This despite the oven was sold with a Amazon Renewed verbiage stating a 90 day warranty. And they have nothing on their "Machine Checklist" to cover this eventuality. And I would assume I am not the only one who takes the "Renewed" route and backs it up with a "Protection Plan". They will frustrate you no end. I suspect, like many insurances, they seek to deny, deny, deny, in hopes the purchaser will give up.
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Reviewed in the United States on January 4, 2026
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Verified Purchase
Darla
Cuba, US
★★★★★ 4
GIFT CARD AS REPLACEMENT, NO CHOICE OF CHECK OR REPLACEMENT. GOOD COMPANY
PROS: * A decent company, responsive and fair. * Allows you to buy items from anywhere you want, and buy the warranty at Amazon. * Provides better coverage than other warranties, and covers more, including breakage! CON: They don't send you a check in order to buy wherever you want, send a replacement, or give you a choice. Instead, they send you an Amazon Gift Card. That's OK if you're a big Amazon shopper, but sometimes, you can get a better price elsewhere.
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Reviewed in the United States on December 10, 2025
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Luis Ortiz
West Palm Beach, US
★★★★★ 5
Asurion has been outstanding. Their customer service is quick, reliable, and efficient.
Every time I’ve had a problem, Asurion has been outstanding. Their customer service is quick, reliable, and efficient, and they handle claims with minimal hassle. It’s reassuring to know they actually follow through and resolve issues promptly.
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Reviewed in the United States on April 16, 2026

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