









⚙️ Elevate your cylinder finish game—precision honed, pro approved!
The Flex-Hone GB Series is a 3.75-inch diameter silicon carbide abrasive brush with 240 grit, designed for precision honing and deburring of cylinders. Made in the USA by Brush Research Manufacturing, it delivers a plateau finish that enhances oil retention, seal life, and rapid ring seating. Compatible with various rotating spindles, it’s self-centering and wear-compensating, making it ideal for automotive, pneumatic, and hydraulic applications.







| Unit count | 1.0 Count |
| Number of pieces | 1 |
| Manufacturer | Brush Research Mfg. |
| UPC | 843469143822 |
| Item model number | GB33424 |
| Product Dimensions | 34.29 x 12.95 x 12.95 cm; 308.44 g |
| ASIN | B002XUL1G2 |
O**R
Worked great on 94mm VW cylinders
I'm really impressed with how well this cleaned up my 94mm VW cylinders. With WD40 and maybe 60 seconds of back and forth it cleaned the glaze off the cylinders and left a nice cross hatch pattern. Super easy and in my humble opinion, way easier than the old 3-stone hones. The downside is you may need multiple hones for different bores but for me it worked out really well.
T**K
Just what I ordered
Item is what I needed and I had hard time finding one like this. I’m glad it arrived
J**E
Works for 5.3L LS
It’s hard to find a correctly sized hone to deglaze a 4.8L/5.3L GM LS engine. I purchased a few different ones & wasted my time doing that so you don’t have to! This one has the desired tool pressure due to size for deglazing cylinders during a rebuild/refresh. The Crosshatching looks like a professional machine shop did it. Great for engines with out much scoring in the cylinders. If you have some damage to your cylinder linings, you’ll want to pass on this & get a sand-stone type hone.
E**C
niaise pas acheté ca
parfait pour mon 5.3
P**L
Best DIY hone tool
Never used before, now a fan! Almost machine shop quality hone, but at home
Trustpilot
1 month ago
1 week ago