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CHA Home Page Company Policies Order Form

Valve Guide Flex-Hones

Put down a plateaued finish after sizing your valve guides. 10" overall length. Available in 180 and 320 grits. Order by size and grit.
For sizes not listed order next larger size.
Part#
BC5mm (.197")
BC5.5mm (.217")
BC6.4mm (1/4")
BC7mm (9/32")
BC8mm (5/16")
BC9mm (11/32")
BC9.5mm (3/8")
BC10mm (13/32")
BC11mm (7/16")

Lifter Bore & Brake Cylinder Flex-Hones

8" overall length. Available in 180 and 320 S/C. Order by size and grit.
Part#
BC12mm (.472")
BC1/2" (12.7mm)
BC14mm (.552")
BC5/8" (16mm)
BC18mm (.709")
BC3/4" (19mm)
BC20mm (.787")
BC7/8" (22mm)
BC15/16" (23.8mm)
BC1" (25.4mm)
BC1-1/8" (29mm)
For sizes not listed order next larger size

Cam Bore & Small Cylinder Flex-Hones

10" Overall Length.
Available in 180 & 320 S/C
For sizes not listed order next larger size.
Part#
BC1-1/4" (31.8mm)
BC1-3/8" (35mm)
BC1-1/2" (38mm)
BC1-5/8" (41mm)
BC1-3/4" (45mm)
BC1-7/8" (47.6mm)
BC2" (51mm)
BC2-1/8" (54mm)
BC2-1/4" (57mm)
BC2-3/8" (60mm)
BC2-1/2" (64mm)
BC2-5/8" (66.7mm)
BC2-3/4" (70mm)
BC2-7/8" (73mm)
BC3" (76mm)

Standard Duty
Cylinder Flex-Hones

3-1/2" hone length, 12" overall length. Available in 180 and 320 S/C. Order by size and grit.
Part#
GB3-1/4" (83mm)
GB3-1/2" (89mm)
GB3-3/4" (95mm)
GB4-1/8" (105mm)
GB4-5/8" (118mm)
For sizes not listed order next larger size

Heavy Duty
Cylinder Flex-Hones

5" hone length on 3" to 3-3/4", 6" hone length on 4" and bigger, 12" overall length. Available in 180 and 320 S/C. Order by size and grit.
Part #
GBD3" (76mm)
GBD3-1/4" (83mm)
GBD3-1/2" (89mm)
GBD3-3/4" (95mm)
GBD4" (101mm)
GBD4-1/4" (108mm)
GBD4-1/2" (114mm)
GBD5" (127mm)
For sizes not listed order next larger size

Flex-Hone Oil

Specially formulated for use with Flex-Hones. Contains a blend of honing and lapping oils.
Part#
FHP 1/2 pint can
FHQ 1 quart can
FHG 1 gallon can
You can identify the grit of your
Flex-Hone by the color of its tip.
Special Order Grits
120 = No Paint
240 = Navy Blue
400 = Yellow
600 = Pink
800 = Light Blue
Stocking Grits
180 = Red
320 = White
916-638-1212