Ride Height Adjustment: Allows up to 1.5 inches of precise ride height adjustment to dial in stance and suspension geometry on Mustang II front setups, Mustang II Compatibility: Designed specifically for Mustang II front suspension systems and works with standard 3-1/2" inside diameter coil springs, Improved Suspension Control: Shock mounts inside the adjuster to help maintain proper shock travel while making critical ride height changes, DIY Installation Design: Installs by trimming and drilling the upper spring tower, including cutting a 3-3/8" hole in the upper spring bucket, Versatile Suspension Use: Compatible with traditional spring and shock combinations and can also be used alongside coil over style suspension setups
Speedway Mustang II Coil Spring Ride Height Adjuster Kit Speedway Motors
Speedway Mustang II Coil Spring Ride Height Adjuster Kit
Sku # 91034444
Mfr. Part # 91034444
Condition
New
Brand
Speedway Motors
Sold
Pair
Details

Our Speedway Mustang II Ride Height Adjusters are the perfect addition to any Mustang II front suspension system. These adjusters are easily installed in a few short hours and are designed for any level of DIY mechanic skill - so that everyone can enjoy the benefits of more suspension adjustability!

These adjusters allow for an additional 1.5" of precision ride height adjustment by modifying your upper spring hat on your Mustang II crossmember. Install is as easy as cutting a hole in the top of the upper spring hat and bolting these adjusters in place.

This system can be used with traditional springs and shocks or can be used in addition to the benefits and adjustability of a true coil over shock setup! These adjusters are designed to prevent you from running out of shock length when making crucial suspension ride height adjustments.

  • Adjust final ride height up to 1.5"
  • Fine tune your Mustang II front suspension
  • Works with 3-1/2" I.D. coil springs
  • Shock mounts inside the adjuster
  • Trimming and drilling of towers is required
  • Cut a 3-3/8" I.D. hole in your upper spring bucket to install this adjuster
Specs
MFG. Part #
91034444
Reviews

yes

Rated
Product Rating
by bob on November 15, 2025

Summary: well constructed

Yes, I recommend this product.

this product saved me from having to do a major rebuild

Rated
Product Rating
by mr.mustang on March 02, 2023

Summary: needed the front of my build up about two more inches for me to feel comfortable with it on rougher roads so wouldnt bottom out as easy

Yes, I recommend this product.

Excellent, quality product.

Rated
Product Rating
by Dave on June 13, 2020

Summary: a little pricy, but worth the extra money.

Yes, I recommend this product.

Great product.

Rated
Product Rating
by DaSkunk on July 04, 2019

Summary: I'm using these on a 56 Tbird with Mustang II IFS. Makes adjusting the ride height up and down a snap. Cheaper than adjustable coilovers and maintains the ride quality. Very well built product. Thanks SPEEDWAY.

Yes, I recommend this product.

Very good quality

Rated
Product Rating
by Bill on February 24, 2018

Summary: The pictures don't show it, but these adjusters have a high quality black oxide coating. I expected them the be bare metal. I was pleasantly surprised. I would buy these again.

Yes, I recommend this product.

Related Items / Suggested Parts
Tech Support
We're here to help before and after your purchase. If you have a question or need assistance with one of our products, please contact us through eBay Messaging and a knowledgeable Speedway Motors team member will be happy to help.
About
Speedway Motors is America’s Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 74 years. Founded in 1952 by “Speedy” Bill Smith – a racer and street rodder himself – Speedway has grown from a one-man operation to become the world’s largest manufacturer, distributor and retailer of street rod and racing products. Our industry-leading fast delivery is the result of same-day shipping from our state-of-the-art, centrally located 500,000 sq. ft. headquarters. Speedway’s size offers customers unmatched product selection and low pricing, while our excellent technical support and customer service have made us a recognized leader in the rodding and racing industries.