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Swift Springs 950-550-450 Standard Conventional Front Spring 9.5in Length 5.5in OD 450lbs/in

Manufacturer

Picture for manufacturer Swift Springs

Part Number

950-550-450
8 reviews
Sale Price

$119.87

3 left at this price

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Usually delivered within 2 days

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Product Details

The Swift Springs 950-550-450 is a Standard Conventional Front Coil Spring measuring 9.5 inches in length with a 5.5-inch outer diameter and a 450 lb/in spring rate. Engineered for motorsports use across dirt and paved surfaces, this spring delivers a linear, predictable response through the full stroke for consistent handling and traction.

Swift Springs manufactures this coil spring from their proprietary HS5.TW alloy steel, a high-strength material that enables a lighter spring body without sacrificing durability or performance. The result is a spring with more available stroke and reduced unsprung weight compared to conventional steel alternatives.

Key Specifications:

  • Part Number: 950-550-450
  • Spring Type: Standard Conventional Front
  • Length: 9.5 inches
  • Outer Diameter (OD): 5.5 inches
  • Spring Rate: 450 lbs/inch
  • Material: HS5.TW Proprietary Alloy Steel
  • Finish: Black Powder Coat
  • Quantity: Sold individually (each)

The 5.5" OD format shares key dimensional characteristics with Swift's 5" OD front spring lineup, offering broad compatibility across popular front suspension setups. The 450 lb/in rate is well-suited for applications requiring a softer, more compliant tune — ideal for tracks where traction and mechanical grip take priority over stiffness.

Good

Wilwood master cylinder was in stock, 40.00 cheaper then Summit! Shipped fast, arrived in two days, very pleased!

Great selection and fast shipping. Not to meantion the lowest prices anywhere on the net.

Autoplicity is awesome! Easy check out and quick shipping! Will buy from again!

I RECEIVED GREAT SERVICE WITH AUTOPLICITY. THERE WAS AN ITEM ON THEIR WEBSITE THAT SAID OUT OF STOCK SO I CALLED AND ASKED WHEN THEY WOULD BE GETTING MORE AND THEY GUY WAS VERY POLITE AND HELPFULL. NOT TOO MENTION THE PRICE WAS WAY BELOW THEIR COMPETITORS. I WOULD RECOMMENT AUTOPLICITY TO ANYONE AND I WILL CONTINUE TO DO BUSINESS WITH THEM.

Nice product, I relly liked these fog lights and they made a difference in visibility. The packaging was pretty good aswell for the shipping aspect.

No issues at all and a very good price to boot. What could be better? Will definitely order from them again.

I have found the BEST price on a part clearly overpriced at other online stores... Excellent customer service knowledgble of mustang performance! Will surely buy again!

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