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Speedway Aluminum Extruded Leaf Spring Lowering Blocks

SAME DAY SHIPPING! Order within the next 56 minutes and receive same day shipping

Speedway Aluminum Extruded Leaf Spring Lowering Blocks

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Details

Reviews

Q & A

What's in the Box

Our lightweight extruded aluminum lowering blocks are stronger than billet!  Available in several heights, all 2-1/2" wide, 5" long.  The centering pin is 9/16".  These blocks will increase or decrease suspension height on most leaf spring applications and can be installed below the leaf spring to raise the vehicle or on top of the leaf spring to lower the vehicle. These lowering blocks allow you to lower your leaf spring vehicle by up to 4 inches.  Heavy Duty U-bolts and hardware are available separately.

  • Lightweight aluminum lowering blocks are stronger than billet
  • 2-1/2" wide
  • 5" long
  • 9/16" centering pin
  • Increase or decrease suspension height on most leaf spring applications
  • Allows you to lower your leaf spring vehicle by up to 4 inches
  • U-bolts and hardware available separately

Lowering blocks are sold individually (each).

THICKNESS options explained:

  • 025 = 1/4" thick
  • 050 = 1/2" thick
  • 075 = 3/4" thick
  • 100 = 1" thick
  • 150 = 1.5" thick
  • 200 = 2" thick
  • 250 = 2.5" thick
  • 300 = 3" thick
  • 350 = 3.5" thick
  • 400 = 4" thick

Customer Reviews

Rated 4.8 out of 5 by 20 reviewers.
RATING BREAKDOWN
20 reviews
5 Stars
16
4 Stars
4
3 Stars
0
2 Stars
0
1 Star
0
RECOMMEND THIS PRODUCT:

Chic's 52
Verified Purchaser
Phoenix, AZ

Easy 1&1/5 inch down

June 25, 2015
I used the 1-1/5" lowering blocks to lower the rear of my 52 Chevy truck. With the u-bolt I also purchased from Speedway the install was easy and lowered the rear to where it looks a lot better.
Pros:
  • Easy To Install
Yes, I recommend this product.
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RumRunnr'z
Verified Purchaser
E. Tn.

quality part, as advertised.

June 24, 2015
parts where as i wanted, installed easily, no hassel & on time shipping.
Pros:
  • Now Pretty Shiney
Cons:
  • Too Never B Seen Again
Yes, I recommend this product.
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383Duster
Verified Purchaser

lowering block

October 09, 2014
Not much to talk about here other than the pin in the blocks is 9/16 in diameter. If the spring mounts on your axle only have a 1/2 hole (like mine) then you will need to press them out and turn them down.
Yes, I recommend this product.
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Jobie
Verified Purchaser
Wa

Supper add on

July 11, 2014
Couldn't get easier. Lightweight great quality strong functional product easy to adjust.
Yes, I recommend this product.
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oldnslow2
Verified Purchaser
Sandwich, IL

Quality first Rate

September 22, 2012
I fit was all I could ask for.
Pros:
  • Easy To Install
Yes, I recommend this product.
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NEALS49
Verified Purchaser
Flat lands of Kansas...

Lowering blocks in my case risers...

July 30, 2012
Needs to make sure you need a pair or not. Too keep you from ordering only one. Need the second one and twice the shipping charge now so not so good a deal.
Pros:
  • Easy To Install
Yes, I recommend this product.
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Merchant Response:

Please note that these lowering blocks are sold each (EA) meaning that you will need to order 2 qty. per axle.
dirth20
Verified Purchaser
Manassas Va

speedway did it again

February 09, 2012
once again Speedway solves my problem
Pros:
  • Improves Launching
  • Easy To Install
Yes, I recommend this product.
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Case1934
Verified Purchaser
San Ramon CA.

Best on market

February 01, 2012
Would buy them again when need. Placed on 55 olds for a low riding rear end. Nice.
Pros:
  • Improves Handling
  • Easy To Install
Yes, I recommend this product.
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Case1934
Verified Purchaser
San Ramon CA.

Best on market

February 01, 2012
Would buy them again when need. Placed on 55 olds for a low riding rear end. Nice.
Pros:
  • Easy To Install
  • Improves Handling
Yes, I recommend this product.
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Jack
Verified Purchaser
Bakersfield, California

[...] as expected

July 14, 2011
[...] as expected.
Yes, I recommend this product.
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Page 1 of 2

Product Q&A

7 questions : 9 answers

1 answers

1968 Camaro I have a 9" Ford with multi leaf mounts for a 1968 Camaro and wanted to stay with my mono leaf springs. Would this adapter work for me and if so, what size should I get?

Lloyd
Paso Robles, CA 93446, USA
March 21, 2015

1968 Camaro I have a 9" Ford with multi leaf mounts for a 1968 Camaro and wanted to stay with my mono leaf springs. Would this adapter work for me and if so, what size should I get?

Answers

March 23, 2015
EricM
These lowering blocks could be used to simulate a multi leaf to a mono leaf. The 2.5” width is correct and likely a 1” may make up the difference but checking on your part would still be preferred. They come in ½” increments and we even offer a ¼” if needed for your application.
1 answers

do they fit 1968 charger?

tayseer
kuwait
February 24, 2015

do they fit 1968 charger?

Answers

February 24, 2015
EricM
These blocks are very universal and can be used on many applications. They measure 2-1/2" wide and 5" long with a 9/16" centering pin. Compare this to the springs on your car to be sure they will fit.
1 answers

Will these fit a 99 Dodge Dakota spring 8.1 is the diff 10 bolt?

Zappp
Arizona, USA
January 25, 2015

Will these fit a 99 Dodge Dakota spring 8.1 is the diff 10 bolt?

Answers

January 28, 2015
EricM
Sorry we do not have a complete application listing for these universal lowering blocks. Compare these dimensions with the requirements of your truck to be sure of fitment: 2-1/2" wide 5" long 9/16" centering pin
1 answers

Can one of these blocks be used to raise the body in the rear of a 1931 Model A coupe about 2 to 2 1/2 inches? We are in the process of correcting a botched install of a Camaro rear end using the mounts for a 32 spring kit from speedway that, because it was mounted incorrectly resulted in gross shackle bind and lowering the body too much to have the original leaf spring functional. I want to try and salvage as much as I can without having to shorten the wheelbase to put the spring directly over the rear end housing rather than the 3 to 4 inches ahead like it is now.

AKGrouch
Anchorage, AK, USA
August 24, 2014

Can one of these blocks be used to raise the body in the rear of a 1931 Model A coupe about 2 to 2 1/2 inches? We are in the process of correcting a botched install of a Camaro rear end using the mounts for a 32 spring kit from speedway that, because it was mounted incorrectly resulted in gross shackle bind and lowering the body too much to have the original leaf spring functional. I want to try and salvage as much as I can without having to shorten the wheelbase to put the spring directly over the rear end housing rather than the 3 to 4 inches ahead like it is now.

Answers

August 25, 2014
EricM
These blocks are 2-1/2" wide and 5" long. They typically work well to lower the ride height of a stock Camaro suspension. Take some measurements of the size of blocks needed for your installation to determine if these are the correct size. If your spring is mounted below the axle tube these will lower the vehicle. If your spring is mounted above the axle tube then these will raise the vehicle.
1 answers

Will these lowering blocks fit my stock 1953 Mercury Monterey, 2door, Hardtop. And what kind of U-bolts and other hardwear will be needed? Thank you!

53Merc
Norway
August 03, 2014

Will these lowering blocks fit my stock 1953 Mercury Monterey, 2door, Hardtop. And what kind of U-bolts and other hardwear will be needed? Thank you!

Answers

August 04, 2014
EricM
These lowering blocks are 2-1/2" wide, 5" long, and have a 9/16" centering pin. I offer 1/2" U bolts that are for 3" diameter axle tubes that are 8" long 91043801 or 10" long 91043800. Compare these specs to the requirements for your vehicle to determine proper fit.
2 answers

stackable? I wanted to know if these blocks could be stacked to makeup a sag on one side of a car.

Sparky65
nj
March 01, 2014

stackable? I wanted to know if these blocks could be stacked to makeup a sag on one side of a car.

Answers

March 22, 2014
plainsman
Blocks shouldn't be stacked on a street car.you can develop a situation from rough roads where the ubolts loosen and blocks get dislodged leaving you with a sudden ride height change or worse.My opinion is a helper leaf or a raised shackle with a single spacer would be better.
March 03, 2014
EricM
It is possible to stack these blocks but we recommend using one block of the proper height if at all possible for safety concerns.
2 answers

What size locating pin are these blocks designed for? 9/16"? 1/2"?

Jimbo
Long Island, NY
June 16, 2011

What size locating pin are these blocks designed for? 9/16"? 1/2"?

Answers

October 10, 2014
383Duster
the pin in these blocks is 9/16
June 16, 2011
Jason
The centering pin is 9/16"
Page 1 of 1

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910-43808 Instructions (PDF)


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