Help is just a click away!
Click here to chat with a Speedway Team Member
Online - Chat with us!
Products to Compare (max of 3)
Compare These Parts
Talk to the Experts. Call 800.979.0122, 7am-10pm, everyday.
Customer Service
Since 1952
  • Expert Tech Support
  • Huge Inventory
  • Fast Shipping
Talk to the Experts. Call 800.979.0122
Shop By
Street Race Truck More... The Toolbox
Add to Cart
Hyperco 11340 Chevy Composite Leaf Spring, 175 Lb. Rate
Hyperco 11340 Chevy Composite Leaf Spring, 175 Lb. Rate

Hyperco 11340 Chevy Composite Leaf Spring, 175 Lb. Rate

Universal Fit, Rear Position, Berlin Eye Leaf Spring Eye Type, 175 lbs. Spring Rate

0 Reviews | 0 Answered Questions
In Stock
Ships FREE
Select your vehicle to verify fitment.
Select Vehicle
Hyperco 11340 Chevy Composite Leaf Spring, 175 Lb. Rate
Hyperco 11340 Chevy Composite Leaf Spring, 175 Lb. Rate
Zoomed In Image
Part # 44411340
Add to Cart
Call to Order
Add to Buildlist

Videos & Articles

Important Messages:

  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.


Leaf Spring Eye Type:
Berlin Eye
Spring Rate:
175 lbs.
Length Eye to Eye:
True Arch:
Suspension Height Adjustment:
Stock Height
Number of Leafs:
Material Type:
MFG. Part #:
Sold in Quantity:
Front Eye I.D.:
Rear Eye I.D.:


This Hyperco Composite Leaf Spring is significantly lighter than steel, retain their design arch, and provide more side bite off the corner. The Hyperco CLS is truly a cost effective, high performance alternative to steel. It allows teams running leaf springs to be consistent night after night without having to constantly measure, monitor and change their spring for loss of arch/sagging. The initial cost is a value based on the incredible service life. Leave the steel on the street, hook up with the Hyperco CLS performance advantage.

  • On average 70% lighter than steel
  • No sagging or chassis inconsistency
  • More durable = greater value
  • Quicker off the corner compared to steel spring

Composite Spring Dimensions (GIF)

Item Details

Front Bolt: 0.562"
Rear Bolt: 0.5"
Arch: 4.5"
Rate: 175#


  1. U-bolts should never come in contact with the composite portion of the leaf spring. Hyperco recommends a heavy gauge rubber or plastic hose be fitted over the U-bolts to ensure that there is no metal to composite contact.
  2. U-bolts should be tightened evenly to a torque value of 80 to 100 ft. lbs., or until the center mounting plate yields/deflects. The torque value should be checked on a regular basis to ensure adequate and consistent clamping force.
  3. The mounting pad must extend a minimum of ¼" past the steel mounting plate.
  4. Additional protection for the composite leaf can be obtained by wrapping all exposed surfaces with high quality duct tape.
  5. When installing springs it is important to check the alignment. The inner sleeves must not bind inside the spring bushings on both the front and rear mounting brackets.
Some parts are not legal for use in California or other states with similar laws/regulations

Related Products

More Like This


Q & A

Videos & Articles
  • Get up to date with the latest rule change and successfully update your sprint car support bars with the help of our very own Jason Martin!
  • In this episode, Project Chevelle gets coilovers and a much-needed altitude adjustment. Watch as we install QA1 bolt-on coilover kits front and rear, then dial in the perfect stance and shock settings. Our old Chevelle is really starting to look mean!
  • AccuAir and Speedway Motors team up to bring you a video series explaining the basics of air suspension. Watch these videos to get a better understanding of air suspension.
  • Speedway Street Tech Kevin goes over the install of the TCI 1949-54 Chevy Car Rear Leaf Spring Kit on his '54 BelAir sedan.
  • In this article, Heath P. talks about one of the most important parts of a hot rod, the front axle. He will walk you through the history of the front axle and how to properly assemble it for your car.
  • How to replace sway bars in a Mercury Comet and the advantages that come with it.
  • Check out this coil-over mounting guide to learn about determining your spring rate, compensating for mounted angle, and measuring a replacement shock accurately.

You May Also Like