The BRM GBD61212 Flex-Hone® is a professional-grade cylinder surface finishing tool designed for 6.00 inch to 6.50 inch bores, featuring 120-grit Silicon Carbide (120SC) abrasive. Engineered for precision deglazing and plateau honing, this Flex-Hone is ideal for preparing large-bore gasoline and diesel engine cylinders prior to piston ring installation.
BRM’s patented flexible abrasive globule design allows the hone to conform to the bore’s true geometry, maintaining roundness while producing a consistent, oil-retaining crosshatch pattern. Unlike rigid honing stones, the Flex-Hone minimizes the risk of taper or out-of-round conditions while delivering a controlled surface texture essential for proper ring seating, improved oil control, and reduced break-in time. The 120SC abrasive provides an excellent balance of light material removal and surface refinement, making it suitable for cast iron and steel cylinder liners commonly found in heavy-duty diesel, industrial, and performance engines.
The GBD61212 is trusted by professional engine builders, machine shops, and fleet maintenance facilities worldwide. It is designed for use with low-speed drills and should be used with appropriate honing oil for optimal results and extended tool life.
Key Features & Benefits
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Bore Range: 6.00" to 6.50" diameter
-
Abrasive Type: 120-grit Silicon Carbide (120SC)
-
Produces a uniform, controlled crosshatch finish
-
Ideal for cylinder deglazing and plateau honing
-
Flexible globule design conforms to bore geometry without taper or distortion
-
Enhances piston ring seating and oil retention
-
Reduces engine break-in time
-
Suitable for cast iron and steel cylinder walls
-
Professional-grade BRM Flex-Hone® quality
Applications
-
Large-bore engine cylinder deglazing and surface finishing
-
Piston ring replacement and engine rebuilds
-
Heavy-duty diesel, industrial, marine, and performance engines
-
Engine builders, diesel machine shops, and fleet maintenance facilities
While these go by many names dingleberry hone, dingle ball hone; ball
hone, flexhone and dingleberry brush Flex-Hone is the correct name.
The BRM GBD61212 Flex-Hone® is a professional-grade cylinder surface finishing tool designed for 6.00 inch to 6.50 inch bores, featuring 120-grit Silicon Carbide (120SC) abrasive. Engineered for precision deglazing and plateau honing, this Flex-Hone is ideal for preparing large-bore gasoline and diesel engine cylinders prior to piston ring installation.
BRM’s patented flexible abrasive globule design allows the hone to conform to the bore’s true geometry, maintaining roundness while producing a consistent, oil-retaining crosshatch pattern. Unlike rigid honing stones, the Flex-Hone minimizes the risk of taper or out-of-round conditions while delivering a controlled surface texture essential for proper ring seating, improved oil control, and reduced break-in time. The 120SC abrasive provides an excellent balance of light material removal and surface refinement, making it suitable for cast iron and steel cylinder liners commonly found in heavy-duty diesel, industrial, and performance engines.
The GBD61212 is trusted by professional engine builders, machine shops, and fleet maintenance facilities worldwide. It is designed for use with low-speed drills and should be used with appropriate honing oil for optimal results and extended tool life.
Key Features & Benefits
-
Bore Range: 6.00" to 6.50" diameter
-
Abrasive Type: 120-grit Silicon Carbide (120SC)
-
Produces a uniform, controlled crosshatch finish
-
Ideal for cylinder deglazing and plateau honing
-
Flexible globule design conforms to bore geometry without taper or distortion
-
Enhances piston ring seating and oil retention
-
Reduces engine break-in time
-
Suitable for cast iron and steel cylinder walls
-
Professional-grade BRM Flex-Hone® quality
Applications
-
Large-bore engine cylinder deglazing and surface finishing
-
Piston ring replacement and engine rebuilds
-
Heavy-duty diesel, industrial, marine, and performance engines
-
Engine builders, diesel machine shops, and fleet maintenance facilities
