Twisted Choppers 4 Point Mount 5 Inch Round Oil Tank 5/16-18 Thread USA Made
Skip the individual bosses and install your 5-inch round oil tank with a cleaner, faster alternative – a four-point weld-in mount that handles everything in one piece. Made in the USA with pre-welded nuts and clearance for a center-mounted filler cap, this mount gives any custom build a professional oil tank installation.
Key Features
- Four-point mounting pattern replaces individual heavy threaded bosses
- Pre-welded nuts on the bottom for easy bolt-in installation
- Clearance for center-mounted filler cap and vent and return fittings
- Compatible with standard rubber oil tank grommets (sold separately)
- Fits any custom motorcycle, chopper, or bobber build
- Made in the USA
Technical Specifications
- Tank Diameter: 5 inches (round)
- Thread Size: 5/16-18
- Material: 12-gauge steel
- Filler Cap: Center-mounted clearance included
- Grommets: Standard rubber oil tank grommets required (sold separately)
- Origin: Made in the USA
Fitment Notes
- Designed for 5-inch diameter round oil tanks only
- Standard rubber oil tank grommets required but not included – purchase separately
- Weld in place to the frame for permanent installation
- Review the Fitment tab for complete compatibility information









Dean F. –
Great Quality and works perfectly