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Allstar Performance is America's leading circle-track racing parts manufacturer. From aluminum panels and chassis components to brake hardware, steering boxes, and oval-track shock packages — every Allstar product is born from sprint car and modified racing experience.
When running specialized cylinder heads like ALL-PRO, standard spark plug shims may not provide the clearance or fitment you need. The Allstar Performance 14mm Small O.D. Spark Plug Index Shims are specifically designed to accommodate these unique head configurations. Proper indexing ensures that your spark plug electrode is perfectly oriented to maximize combustion efficiency and power output.
Indexing your spark plugs is a professional-grade tuning technique that can significantly impact engine performance. By ensuring the spark plug gap is oriented correctly, you promote a cleaner, more complete burn. This kit provides the variety of thicknesses required to achieve perfect indexing on every cylinder. Whether you are building a drag car or a high-performance street machine, these shims are an essential component of your tuning process. Elevate your engine's potential with high-quality components from GGCRACING.
Other popular Allstar Performance products customers consider together:
Allstar Performance is America's leading circle-track racing parts manufacturer. From aluminum panels and chassis components to brake hardware, steering boxes, and oval-track shock packages — every Allstar product is born from sprint car and modified racing experience.
When running specialized cylinder heads like ALL-PRO, standard spark plug shims may not provide the clearance or fitment you need. The Allstar Performance 14mm Small O.D. Spark Plug Index Shims are specifically designed to accommodate these unique head configurations. Proper indexing ensures that your spark plug electrode is perfectly oriented to maximize combustion efficiency and power output.
Indexing your spark plugs is a professional-grade tuning technique that can significantly impact engine performance. By ensuring the spark plug gap is oriented correctly, you promote a cleaner, more complete burn. This kit provides the variety of thicknesses required to achieve perfect indexing on every cylinder. Whether you are building a drag car or a high-performance street machine, these shims are an essential component of your tuning process. Elevate your engine's potential with high-quality components from GGCRACING.
Other popular Allstar Performance products customers consider together:
