The UNRVLD 108 mm Cylinder Ball Hone is available in 240-grit and 320-grit silicon carbide, giving you the choice of a more aggressive or finer surface finish depending on the application.
Designed for common 4.000–4.125-inch V8 cylinder bores. The 108 mm brush diameter is deliberately oversized so the flexible abrasive balls maintain working pressure against the cylinder wall, helping remove light glazing and restore an even crosshatch finish.
Choose your grit:
- 240 Grit – suited to classic and traditional V8 applications where a more aggressive bore refresh is required.
- 320 Grit – suited to applications requiring a finer finished surface.
Features:
- 108 mm diameter
- Available in 240 or 320 grit
- Silicon-carbide abrasive
- 300 mm overall length
- Flexible ball-hone construction
- Suitable for bores from 95–108 mm (3.750–4.250 in).
- Suitable for classic V8 engines
- Ideal for light deglazing and cylinder surface refreshing
- Use with suitable honing lubricant
Ball hones are intended for light deglazing and surface refreshing only. They are not a substitute for precision boring and honing equipment. Always measure the bore, follow the piston-ring manufacturer’s finish requirements, use suitable honing lubricant, and thoroughly clean the bore before assembly.
