Brush Research FLEX-HONE Cylinder Hone, GB Series, Silicon Carbide Abrasive, 4-1/8 (105 mm) Diameter, 240 Grit Size

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$36.37

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(10000 available )

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97 Ratings
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Reviews
  • jeremy clark

    > 24 hour

    Best hone by far

  • vbr

    > 24 hour

    worked perfect to deglazed cylinder wall on 2003 Ford Focus 2.0L SPI , also known as the dropped valve seat engine SOHC. Adds a nice crosshatch to cylinder. Directions for use were on end of brush box.

  • Colton Henninger

    > 24 hour

    Ordered a few different grits to take out some gunk and pits from an engine i am working on. You can definitely see the improvements and new life these products can provide under the right circumstances. Sadly for my case the damage to my engine is more than i feel comfortable dealing with, with a hone at least. Will be buying these products in the future for sure!!

  • Akruck

    > 24 hour

    Just used it on one aircraft cylinder, but it did an amazing job. Other mechanics in the shop were equally amazed. The cylinder broke in very well.

  • Tyson

    > 24 hour

    deglazed my cylinders, and got it to work with my engine still in the car. only had to shorten it up

  • Nelson V.

    > 24 hour

    Nice tool 4 1/8 fits 06 5.7 hemi cylinder good fit used with regular engine oil for lubricant.

  • jeff beary

    > 24 hour

    Bought this to rehone the 3.8 Buick cylinders after trying to use them old stone three arm hone devices. I have no idea why I ever thought that contraption would ever work. This thing is a beast. Takes seconds to use properly and I didnt have a second thought about putting the crank back in and hooking up the Pistons. If you ever plan during your mid-life crisis that you must rebuild an engine, save yourself some time and get this and the next grit under and use these to perfectly hone your sbc or whatever man.

  • cpw

    > 24 hour

    Very pleased with the performance of this item. Its good for 4-5 engines if you dont let it bottom out and crack the stones. But it does a very good job.

  • Joseph vor

    > 24 hour

    Great tool, used this on a 305 chevy and made a excellent hone on each cylinder, even and consistent on each cylinder.

  • Mike G

    > 24 hour

    Did a quick hone of the cylinder walls while refreshing the engine over the winter, Bore size on my motor was 4.030

The Flex-Hone® tool was originally created by Brush Research Manufacturing to deglaze cylinder walls in automotive applications. Brush Research embraced the benefits of a plateau finish and pioneered the concept of plateau honing culminating in the introduction of the Flex-Hone tool in 1972. The Flex-Hone has gained many nicknames over the years and including ball hone, ball style hone, flexihone, dingleberry hone, bead brush, glaze breaker and glaze buster. Flexible honing with the Flex-Hone tool produces an oil holding cross hatch pattern and a true plateau finish free of cut, torn and folded metal. Any type or size of cylinder can benefit from the Flex-Hone®. These abrasive bead style brushes are produced in standard diameters from 4mm to 36 inches. Nine abrasive types are offered including silicon carbide, aluminum oxide, boron carbide and diamond allowing the tool to be tailored to finish any base material. A choice of 11 different grit selections are available for precise control of finish parameters. The elimination of peaks results in rapid ring seating, better oil control, reduced seepage in hydraulic and pneumatic applications and provides better seal performance and longer seal life. Successful applications include firearm chambers, shotgun barrels, musical instruments, combustion chambers, air compressors, pumps, valve bodies, valve guides, brake cylinders, wheel cylinders and the list goes on and on. Flex-Hone® tools are also very effective for deburring cross drilled holes, port radiusing and edge blending. Because of its unique construction, the Flex-Hone is self-centering, self-aligning, and self-compensating for wear so it does not require an elaborate set-up or special training. Deburring can be effectively automated and combined in the machining process to allow a complete cylinder finish in one operation or it can be employed as a secondary operation with equal results.

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