The FLEX-HONE® tool delivers unmatched value in the automotive rebuilding industry by providing precision surface finishing that restores critical components to like-new condition. Its flexible, self-centering design enables consistent results across a variety of engine and brake system applications—without the risk of over-machining or altering component geometry.
Automotive
YOUR FINISHING PROCESS JUST GOT EASIER. DISCOVER HOW OUR TOOLS HELP THE AUTOMOTIVE AFTERMARKET AND REBUILDING INDUSTY
OVERVIEW
The automotive aftermarket and rebuilding business; a multibillion dollar industry, is one of the largest sectors in the world. This market continues to grow due to the increased desire to extended vehicle life with cost-effective repairs. The U.S. automotive aftermarket alone is exceeded approximately $400 billion, with a large part devoted to remanufacturing and repairing of critical engine components.
The automotive industry needs accurate surface finishing to rebuild and restore engine parts, brake systems, and other critical components to return vehicles to perform like new. Metalworking professionals and automotive hobbyists benefit from using industrial brushes and specialized tools like the FLEX-HONE® to achieve superior surface conditioning, deburring, and crosshatching. Both industrial brushes and the FLEX-HONE® tool offer specialized, efficient, accurate finishing solutions that guarantee high-quality results for all of your projects. The use of these tools enhances productivity, cuts costs, and enhances overall performance of rebuilt automotive components.
Can be used in Virtually any rotating spindle
FLEX-HONE® On Automotive Components
FLEX-HONE® Automotive applications
- Engine Cylinder Bores – Restores crosshatch finish for improved oil retention, ring seating, and compression.
- Valve Guides – Removes carbon and deposits to ensure smooth valve operation and proper sealing.
- Lifter Bores – Cleans and smooths bore surfaces to promote consistent lifter function and reduce sticking.
- Camshaft and Crankshaft Oil Passages – Deburrs and polishes intersecting holes for improved oil flow and bearing protection.
- Brake Caliper Bores – Removes rust and corrosion to restore smooth piston movement and braking performance.
- Wheel Cylinders and Master Cylinders – Smooths internal surfaces to maintain hydraulic integrity and sealing.
- Connecting Rod Pin Bores – Deburrs and finishes bores to ensure proper fitment and reduce friction.
- Transmission Valve Bodies & Bores – Polishes hydraulic channels to enhance fluid flow and transmission
responsiveness. - Differential Housing Bores – Cleans and deburrs to support gear alignment and lubrication.
- Fuel Injector Bodies – Deburrs and smooths internal passages to optimize fuel flow and atomization.
- Turbocharger Housings – Polishes mating surfaces for improved airflow and component durability.
- Throttle Bodies and Intake Manifolds – Removes carbon buildup and casting flash to enhance airflow and engine performance.
FLEX-HONE® BENEFITS
Consistent Surface Finishing
Produces a uniform finish, reducing wear and increasing part longevity.
Enhanced Lubrication Retention
Crosshatching in cylinders promotes even lubrication distribution, reducing engine friction.
Increased Safety
Removing burrs and corrosion from brake and engine parts ensures reliable operation.
Time and Cost Savings
Efficient finishing tools reduce labor time and rework, increasing overall productivity.
Versatility
Suitable for a wide range of automotive components, from small engine parts to large industrial applications.
MADE IN USA
If it says FLEX-HONE®, you know you have Quality
Featured Products
Brush Research 14353 Automotive 10 -Piece FLEX-HONE® Kit, 180 Grit, Silicon Carbide
Abrasive Type: 180 Grit Silicon Carbide
Kit Includes: 10 Hones
Brush Research BCKFIN240AO, 10-Piece Finishing FLEX-HONE® Kit, 240 Grit, Aluminum Oxide
Abrasive Type: 240 Grit Aluminum Oxide
Kit Includes: 10 Hones
BRM GB41824 FLEX-HONE®, 4.125" (105mm) Bore, 13.5" OAL, 240 Grit, Silicon Carbide (SC)
Bore Diameter: 4.125" (105mm)
Abrasive: Silicon Carbide
Grit: 240
Abrasive Length: 4"
Overall Length: 13.5"
BRM RMFH120Z25 FLEX-HONE® for Rotors 120 Grit Zirconia Alumina #1525 Medium
Abrasive: Zirconia Alumina #1525
Grit: 120 (Medium)
Brush Research VGFK24 Valve Guide 7-Piece FLEX-HONE® Kit, 240 Grit, Silicon Carbide
Abrasive Type: 240 Grit Silicon Carbide
Kit Includes: 7 Hones
BRM RMFH240Z25 FLEX-HONE® for Rotors 240 Grit Zirconia Alumina #1525 Fine
Abrasive: Zirconia Alumina #1525
Grit: 240 (Fine)
BRM OLK- 9 Piece Nylon Twisted Wire Oil Line/Gallery Tube Brush Kit With Ring Handles
Fill Material: Nylon
Kit Includes: 9 Brushes
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BRM OGK- 5 Piece Nylon Twisted Wire Oil Line/Gallery Tube Brush Kit With Ring Handles
BRM OGK- 5 Piece Nylon Twisted Wire Oil Line/Gallery Tube Brush Kit With Ring Handles
Fill Material: Nylon
Kit Includes: 5 Brushes
BRM 1EK- 29 Piece Nylon Twisted Wire Oil Line/Gallery Tube Brush Kit With Ring Handles
Fill Material: Nylon
Kit Includes: 29 Brushes
BRM VGNK- 7 Piece Nylon Twisted Wire Tube Brush Kit For Valve Guides With Ring Handles
Fill Material: Nylon
Kit Includes: 7 Brushes
BRM VGCK- 7 Piece Carbon Steel Twisted Wire Tube Brush Kit For Valve Guides With Ring Handles
Fill Material: Carbon Steel
Kit Includes: 7 Brushes
DD-1 (149) Copper Injector Cleaning Brush, 1.375" Diameter, Stainless Steel, 10.50" OAL
Major Brush Diameter (in): 1.375"
Fill Material: 302 Stainless Steel
Overall Length: 10.5
Application: Copper Injector Cleaning
CAT-1 Brush, .900" Diameter, Stainless Steel Filament, 10.50" OAL
Major Brush Diameter (in): 0.9"
Fill Material: 302 Stainless Steel
Overall Length: 10.5
Application: Caterpillar Injection Nozzles
NH-2 Copper Injector Cleaning Brush, 1.625" Diameter, Stainless Steel, 10" OAL
Major Brush Diameter (in): 1.625"
Fill Material: 302 Stainless Steel
Overall Length: 10
Application: Cummins Injector Cleaning
PTD2 Injector Cleaning Brush, .312" Diameter, Stainless Steel, 7.62" OAL
Major Brush Diameter (in): 0.312"
Fill Material: 302 Stainless Steel
Overall Length: 7.62
Application: Cummins Injector Cup Cleaning
FB75 Flat Bottom Brush, .875" Diameter, Stainless Steel, 10.50" OAL
Major Brush Diameter (in): 0.875"
Fill Material: 302 Stainless Steel
Overall Length: 10.5
Application: International Harvester Engine Cleaning
10-SJD O-Ring Groove Cleaning Brush, 5.500" Diameter, Nylon, 17.00" OAL
Major Brush Diameter (in): 5.5"
Fill Material: 6-12 Nylon
Overall Length: 17
Application: O Ring Groove Cleaner
BRM 14691 Rectangular Filament Abrasive Nylon Brush, For Holes Between 1.250"-1.750", 120SC
Brush Diameter (in): 2"
Fill Material: 120 Grit Silicon Carbide, Abrasive Nylon
Overall Length: 10
Application: Plateau Finishing
BRM 14693 Rectangular Filament Abrasive Nylon Brush, For Holes Between 1.750"-2.250", 320SC
Brush Diameter (in): 2.5"
Fill Material: 320 Grit Silicon Carbide, Abrasive Nylon
Overall Length: 10
Application: Plateau Finishing
BRM 14539 Rectangular Filament Abrasive Nylon Brush, For Holes Between 3.000"-3.500", 120SC
Brush Diameter (in): 4"
Fill Material: 120 Grit Silicon Carbide, Abrasive Nylon
Overall Length: 14
Application: Plateau Finishing
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BRM 14535 Rectangular Filament Abrasive Nylon Brush, For Holes Between 4.000"-4.500", 120SC
BRM 14535 Rectangular Filament Abrasive Nylon Brush, For Holes Between 4.000"-4.500", 120SC
Brush Diameter (in): 5"
Fill Material: 120 Grit Silicon Carbide, Abrasive Nylon
Overall Length: 14
Application: Plateau Finishing
BRM 14700 Rectangular Filament Abrasive Nylon Brush, For Holes Between 4.000"-4.500", 320SC
Brush Diameter (in): 5"
Fill Material: 320 Grit Silicon Carbide, Abrasive Nylon
Overall Length: 14
Application: Plateau Finishing
BRM 14701 Rectangular Filament Abrasive Nylon Brush, For Holes Between 4.500"-5.000", 120SC
Brush Diameter (in): 5.5"
Fill Material: 120 Grit Silicon Carbide, Abrasive Nylon
Overall Length: 14
Application: Plateau Finishing
case studies
Learn how BRM tools are being used to improve processes, cut costs and save time!
FLEX-HONE®- Improving Piston Ring Performance
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.
download pdfFLEX-HONE® for Rotors - A DIY Disc Brake Surfacing Tool
An examination of the benefits of BRM’s rotor hone tool exploring how the various grit options performed on used race car rotors.
download pdfThe Necessity Of A Plateaued Cylinder Wall Finish
A detailed presentation of several test run engines with performance results of lower blow-by, increased compression, less ring and cylinder wall wear with the Flex-Hone Process. 28 pages.
download pdfApplication Sales Sheet
FLEX-HONE®-CROSSHOLE DEBURRING
download pdfFLEX-HONE®-CROSSHOLE DEBURRING
Learn how the FLEX-HONE deburred 48 cross holes in 12 seconds!
download pdf
FLEX-HONE®-POLISHING HARDENED STEEL
download pdfFLEX-HONE®-POLISHING HARDENED STEEL
Learn how the FLEX-HONE took a set of carbide rings from a 40Ra to 4 in less than 20 seconds!
download pdf
FLEX-HONE®-COATING REMOVAL
download pdfFLEX-HONE®-COATING REMOVAL
Learn how the FLEX-HONE removed paint and coating from a cylinder with minimal dimensional change!
download pdf
FLEX-HONE®-RUST AND CORROSION REMOVAL
download pdfFLEX-HONE®-RUST AND CORROSION REMOVAL
Learn how the FLEX-HONE quickly and easily removed corrosion and rust with minimal dimensional change!
download pdf
FLEX-HONE®-THREAD DEBURRING
download pdfFLEX-HONE®-THREAD DEBURRING
Learn how the FLEX-HONE deburrs coarse threads in 6 seconds!
download pdf
NAMPOWER END BRUSH - ALUMINUM
download pdfNAMPOWER END BRUSH - ALUMINUM
Learn how the NAMPOWER Ceramic End Brushes automate finishing and deburring by finishing parts in 10 seconds!
download pdf
NAMPOWER END BRUSH - INCONEL
download pdfNAMPOWER END BRUSH - INCONEL
Learn how the NAMPOWER Ceramic End Brushes automate finishing and deburring by finishing tough Inconel alloy parts in 20 seconds!
download pdf
ABRASIVE NYLON WHEELS-ALUMINUM EXTRUSION DEBURRING
download pdf
NAMPOWER-CERAMIC THREAD DEBURRING
download pdfNAMPOWER-CERAMIC THREAD DEBURRING
Learn how these ceramic abrasive filament brushes maximize value per part by debars threads in 5 seconds!
download pdfNeed more information
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CUSTOMIZED BRUSHES
Didn't find the brush you need? No problem. BRM Technical Engineers will design a tool for your specific application requirements.
GUARANTEED TEST ORDER PROGRAM
Our tools speak for themselves. For qualified production applications, no charge samples will be provided for testing.
NEED ON-SITE SUPPORT?
Our network of manufacturing representatives work with you to discuss your application, deliver samples and optimizing setups.
Have any questions?
For more than 65 years, BRM has been creating solutions to some of the toughest surface finishing challenges. We look forward to working with you.
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