Product Summary

Modified, Stock Car, 5.00" Flange Diameter, Zinc Plated

  • Maximize your spring tuning capabilities with this adjustable spring shim
  • Extended style for shorter springs and is adjustable from 3 1/8" to 5 1/4"
  • Use with 5 or 5 1/2" OD springs and can be used in the front or rear of the vehicle
  • 2 7/8" ID center hole allows for use with GM front suspensions and stock mount style small body shocks
  • Zinc plated for corrosion resistance

Key Specs

MFG. Part #91645552
BrandSpeedway Motors

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Speedway Motors 91645552 Details

Maximize your spring tuning capabilities with these adjustable spring shims. Extended-style for use with shorter springs. Threaded steel two-piece design. Adjust the shim to where you want and then spot weld it.

Features a 2-7/8" center hole to allow use with stock style shocks. Can be used with either 5" or 5-1/2" diameter springs.

Item Details

Extends 3-1/8" to 5-1/4"

Speedway Motors 91645552 Specifications

MFG. Part #91645552
BrandSpeedway Motors
Speedway Motors Catalog Part #916-45552
Flange Diameter5.00"
Flange Width.279"
Outside Diameter4.46"
Inside Diameter4.238"
Hole Diameter2.925"
Overall Length5.15"
Thread Length2.55"
Thread Pitch
FinishZinc Plated
Sold in QuantityEach
NotesHas 2-1/2" of cut-to-length material.
Material TypeSteel