YOUR FINISHING PROCESS JUST GOT EASIER
Whether you're a professional automotive rebuilder or a dedicated at-home hobbyist, understanding the importance of engine cylinder wall deglazing is critical to a successful engine rebuild. In a gasoline or diesel engine, the pistons ride up and down within the engine maintaining a tight seal via the piston rings. Over time, the constant rubbing of the rings against the cylinder wall can polish it to a very smooth, glassy finish.
This glazing effect reduces the ability of new piston rings to seat properly, leading to poor compression, oil blow-by, and reduced engine performance. Deglazing restores the ideal surface texture—known as a crosshatch pattern—which allows oil retention and ensures instant ring seating. Without it, even new rings can’t create an effective seal against the cylinder wall. The FLEX-HONE has become the industry standard for cylinder wall deglazing. Unlike rigid honing stones, the FLEX-HONE gently abrades the cylinder wall surface to create the necessary crosshatch pattern without removing excessive material or altering the bore geometry. This makes it ideal for engine work where precision, control, and ease of use are essential—whether you’re rebuilding a small block V8 or refreshing a motorcycle engine.
Cylinder wall deglazing is an essential step in every engine rebuild process and FLEX-HONE® tool makes the job accessible, effective, and precise. The FLEX-HONE® tool, also known as a ball hone, is widely recognized by professionals and hobbyists alike as the go-to solution for cylinder wall surface conditioning.
Produces a consistent 45 degree cross-hatch pattern for better sealing and oil retention.
Removes cylinder glaze and smooths peaks without affecting bore geometry.
Because the tool is manufactured oversized, it automatically centers in the bore and follows its shape, reducing the risk of damage.
It is compatible with regular electric hand drill without the need for specialty equipment. No professional experience necessary!
Offered in a variety of sizes and abrasive types for virtually any engine application and ring type.
Promotes better ring seal, reduced blow-by, and improved compression.
Properly honed surfaces reduce friction and wear, increasing longevity.
An affordable, reusable tool that saves money compared to machine-shop honing.
Learn how BRM tools are being used to improve processes, cut costs and save time!
Piston rings play a critical role to overall engine performance. Learn how the FLEX-HONE® consistently provides the optimal surface to ensure peak performance and ring seating.
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Our fourth booklet. An Introspection of Surface Finish, as is commonly accepted practice, and through profiles and SEM photos exposing the lack of basic quality and inadequacies in the surface structure that will very adversely affect performance. 30 pages.
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An extensive study using a Scanning Electron Microscope to examine and compare the results of cylinder honing using rigid hones versus the Flex-Hone® Tool. The booklet examines what the honed cylinder wall surface should and should not look like. Three different studies are presented USA, UK, and France for comparison. 26 pages.
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