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Your cart is empty.Holley 20-13 Secondary Diaphragm Spring Kit
Scott Sniff
2025-08-30 17:33:57
As with anything Holley brand, these are of the highest quality. Good instructions as a guide to what stiffness of spring you may need for your application. And with so many springs, you may have more to use on other projects!
underachiever
2025-08-28 12:38:47
The springs are color coded and work fine.
Darrell k ellsworth
2025-07-13 15:49:33
Good product for the money
Mills
2025-07-03 10:21:38
These springs are the right springs for the job. I worked my way through from the lightest to the one that worked for my application, and they seemed appropriately spaced and well constructed. The colors were easier to read than I thought they would be.
Art Marco
2025-06-25 12:24:04
These springs are great (I've used them in the past) but they need a little more paint or ink or whatever they use on them. It's very difficult to see the markings on some of them.
Customer
2025-06-22 17:11:22
These are certainly not a Holley priduct. I have a few Holley springs left over to compare to these and there is a difference. The coils don't matchup but that's not to say the spring rate isn't the same the two uncompressed seemed to have the same spring rate when compressed but that's just by feel. I do like how a few of the are fully painted instead of just at the top like the original Holley springs. Colors seem pretty clear to distinguish.
Bruce
2025-06-19 15:24:16
I bought these springs for a Holley 670 Street Avenger and these particular springs because I had good info about them from Holley. I was easily able to fine tune the timing/opening of my secondarys. Pleased.
Jason
2025-06-16 14:55:37
Arrived on time good price would recommend
Garry
2025-06-15 10:28:40
Fits good
AlejandroGL
2025-04-26 11:29:27
Perfecto para ajustar el vacÃo de acuerdo a tu necesidad
paul
2025-04-17 10:41:14
Original Holley Part and with proper instructions.
Customer
2025-01-31 12:31:59
Great product, great transaction. Came quickly and as described.
bob card
2025-01-21 18:40:17
This is the perfect spring kit for a holley carb. worked great for me .
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