Product Summary

74-78 Mustang II, 74-80 Pinto, 75-80 Bobcat, Steel

  • Blemished
  • Item has cosmetic imperfections such as scuffs, dents, bends, or similar marks. The item functions as originally intended but is discounted due to these blemishes. Please review the photos and description for more information
  • Feature a powder coated finish for increased longevity and corrosion prevention
  • Made to OEM specs with a 3.5" ID and 13.5" free height
  • Available in spring rates from 275 to 425, in 25 lb. increments, allowing you to fine tune your ride quality
  • Features a square spring end for the upper hat side ensuring a flush fit for proper compression and alignment
  • Features a pigtail spring end for the control arm side, allowing it to be trimmed to fit your setup
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Key Specs

Garage Sale TypeBlemished
PositionFront
Spring Rate300 lbs.
Free Height13.5"
Inside Diameter3.5"
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Need To Know

Ineligible for Return

Contains items that cannot be returned

Speedway Motors UP231662 Details

Garage Sale Product

This is Garage Sale priced due to cosmetic imperfections. The item functions as originally intended but is discounted due to the blemishes. The photos above will show the imperfections.

NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS

Our Mustang II springs come in rates from 275 thru 425 and in 13.5” free height/length. They will require cutting to the necessary length on the majority of applications. For the heavier vehicles such as full size pickup trucks and fat fendered cars the spring rate used will normally be in the 350-400 range. With Small Block and automatic a common rate is 375 to 400 and with the addition of A/C or a big block you will need to compensate for the additional weight and go to the next higher rate. Frame boxing and plating, accessories, and fuel tank size all play a part in selecting spring rate. When vehicle is sitting at ride height ready for test drive the lower control arms should be parallel with the ground or pointing down at a slight angle on the outer ends. The springs will settle some in the first couple of hundred miles so allowance for this should be made.

  • Powder coated gloss black
  • 13.5" spring length
  • 3.50" inside diameter
  • Use the spring chart below to select proper rate

Use the following chart to select your rate:

  • 1200 lb. Front  End Weight = 275 Rate Spring
  • 1300 lb. Front  End Weight = 300 Rate Spring
  • 1400 lb. Front  End Weight = 325 Rate Spring
  • 1500 lb. Front  End Weight = 350 Rate Spring
  • 1600 lb. Front  End Weight = 375 Rate Spring
  • 1700 lb. Front  End Weight = 400 Rate Spring
  • 1800 lb. Front  End Weight = 425 Rate Spring

Speedway Motors UP231662 Specifications

KEY SPECS
MFG. Part #UP231662
BrandSpeedway Motors
Garage Sale TypeBlemished
PositionFront
Spring Rate300 lbs.
Free Height13.5"
Inside Diameter3.5"
Material TypeSteel
FinishPowder Coated
ColorBlack
Diameter Big End4.6"
Diameter Small End4.6"
Spring Rate Range300 - 399 lbs.
GENERAL
Sold in QuantityPair
Progressive Rate SpringNo
Coil Spring End (A)Square
Coil Spring End (B)Pigtail
Wire Diameter0.58"

Questions & Answers

Fitment

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