Dura-Bond Valve Spring Shims
.015" thick cold rolled steel valve spring shims. These are brand new never been used.
Non-serrated shims do not damage the spring pad area on today's aluminum cylinder heads.
Non-serrated shims lay flat so as not to set up and harmonics in the spring.
Non-serrated shims lay flat so as not to introduce any lateral loads on the spring, valve, or guide.
Refacing valves and the grinding of valve seats causes loss of metal. This loss of metal results in the loss of proper spring pressure. To restore the proper spring tension, one must replace the lost material by installing a Valve Spring Booster Shim under the spring.
Dura-Bond Spring Booster Shims are available in both case hardened High Performance and regular series. All shims are made from prime quality cold rolled steel, and all shims meet or exceed OEM specifications.
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