SKU: 48318798271

Ferrea 98lbs Dual Valve Spring Kit - Porsche / 911 Turbo 996TT / 3.6L Turbo

$310.50 $345.00
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USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Oct 30 - Nov 4

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Description

Ferrea 98lbs Dual Valve Spring Kit - Porsche / 911 Turbo 996TT / 3.6L TurboActual part may differ from image above. This Kit contains 24 Ferrea Dual Intake & Exhaust Valve Springs Ferrea Valve Springs are developed from high strength alloys, including premium grade chrome silicon steel. These springs are manufactured with state of the art equipment. Our springs are heat treated and stress relieved, which dramatically increases the springs life. The design and processes on these dual valve springs are optimized to reduce

Actual part may differ from image above.


This Kit contains 24 Ferrea Dual Intake & Exhaust Valve Springs


Ferrea Valve Springs are developed from high strength alloys, including premium grade chrome silicon steel. These springs are manufactured with state-of-the-art equipment. Our springs are heat-treated and stress relieved, which dramatically increases the spring’s life.

The design and processes on these dual valve springs are optimized to reduce valvetrain harmonics and provide greater stability on high horsepower applications. We use high grade premium super-clean PAC alloy materials and maintain tight tolerances for those unique aftermarket cylinder heads.

Strict quality control procedures and cycle testing ensures consistency from batch to batch. Ferrea Valve Springs provide the stability needed for high lift, high rpm racing engines, while minimizing the load loss for today’s aggressive valvetrain combinations.


- Inner Spring OD 20.8mm
- Inner Spring ID 15.88mm
- Outer Spring OD 28mm
- Outer Spring ID 20.8mm
- Open Pressure 220lbs @ 24.5mm
- Max Lift 11.2mm
- Coil Bind 20mm
- Manufacturer Ferrea
- Valve Spring Type Dual
- Seat Pressure 98lbs @ 33.5mm
- Valve Spring Rate 309lbs/inch


This spring requires Ferrea Titanium Retainer # E11094 and Ferrea Spring Seat Locator # SL1099. (Discard OEM Spring Seat Locators) NOTE: Ferrea Seat Locators must be installed before valve seal installation and Max Net Lift is limited to 11.20 mm due to spring retainer and valve seal clearance.



Replaces OEM Part #  99-61-0-509-370 / 99 61 0 509 370 / 99610509370

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: 48318798271

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4.4 ★★★★★
Based on 22 reviews
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Verified Purchase
Judith G.
West Palm Beach, US
★★★★★ 5
Absolutely Stunning Glitter with Thoughtful Packaging! | Rainy Rainbow
Color: Rainy-Rainbow, Color: Rainy-Rainbow
This glitter is breathtaking! The sparkles catch the light very beautifully — it has a mesmerizing, holographic shine that’s perfect for adding extra pizzazz to any project. When it arrived, I was pleasantly surprised at how well it was packaged. The box was securely sealed, and everything inside was perfectly intact—minor spills, no mess. A heads up on opening the entire thing: the round container’s Lid is screwed on VERY LOOSELY. Be mindful when you’re unboxing. Screw it back on very tightly. The spray nozzle on this bottle gives such a beautiful, antique perfume vibe—it really elevates the whole experience. It sprays the glitter perfectly, so it’s easy to get a flawless application every time. (Don’t forget to keep the little nozzle cover to protect it!) Honestly, I wouldn’t apply it any other way than with the bottle—it just makes everything so much smoother. 🤷🏻‍♀️ If you happen to go overboard, just grab the closest shirt and wipe off any excess. No point in wasting any of this stuff! :) Oh, & those two little gloss bottles are actually glue, which is perfect for keeping everything right where you need it to be. Here’s a little pro tip: I used the same tape that kept the box sealed to reseal the lid of the round glitter container until I’m ready to use it. Worked like a charm! 😎 It’s a small detail, but it will keep everything neat, and prevent unwanted glitter explosions in the future. If you’re a sparkle lover, you’ll adore this glitter—it’s as pretty in person as it looks online!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 16, 2024
D
Verified Purchase
Deanna
Port Orchard, US
★★★★★ 5
Beats the expensive pet store ones lasts way longer without threads breaking even with heavy play
Style: 5 KNOTS
Have a high energy large dog that does bite oractiand he adores these! We've gone through even some super expensive ropes from pet stores promising they will last yet they are destroyed in a couple uses. This is his second one and the first only had one badly worn spot with threads lose after months of heavy use! He was so excited when his new one came today and value for the price and durability I will stick to these every time now dog loves it! Very rug chew resistant great size!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
A
Verified Purchase
artzkitten
Cuba, US
★★★★★ 5
Strong toy
Style: 5 KNOTS
This has been a great activity for our dog and really sturdy for our super chewer. We don’t let her have it alone but she has been known to saw through a few ropes while playing tug.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
A
Verified Purchase
alex matteson
West Palm Beach, US
★★★★★ 5
Great rope for dogs that destroy all their toys
Style: 5 KNOTS
So this product is not dog proof but man is it higher quality than others on the market. One of them is a shredder, anything she can get her paws and teeth on she’s ripping apart with all her might, it’s impressive if a stuffed toy lasts 5 minutes. We have tried lots of different materials and toys and this thing is great. It’s not saturated in drool and does not smell after they play all day. It is a large heavy rope so would be cautious if your large dogs likes to thrash. Our big boy doesn’t and it’s too large for our medium sized dog to thrash. Might be a little pricier than others but the extra money is well worth it. 85 lbs rottie mix and 25 lbs terrier mix in the video, we were just moving in so ignore the boxes lol
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Reviewed in the United States on March 2, 2026
K
Verified Purchase
Kahlua's Mom
Charlottesville, US
★★★★★ 5
Great rope, but not for aggressive chewers
Style: 5 KNOTS
This is a great rope, but if your dog is a aggressive chewer, don't buy it. My Doberman chews everything, she destroyed this rope into many pieces, after only having it for 3 days.I swear she would chew iron into pieces. Now she has only bones to chew on....
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 7, 2026

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