Twisted Choppers Under Trans Oil Tank For Big Twin Frames
The Twisted Choppers Under Trans Oil Tank solves the oil storage challenge of drop-seat Big Twin frames by keeping the tank completely out of sight beneath the transmission. Purpose-built for tight clearances, it lets builders maintain a clean, uncluttered profile without compromising oil capacity or pump compatibility.
Key Features
- Fabricated from 14-gauge steel with fully TIG welded fittings
- Pressure tested for leak-free performance
- Holds 3 quarts of oil
- Includes 2 mounting tabs for secure under-transmission installation
- Compatible with 1973-Up Big Twin and 1977-Up Sportster oil pumps
- Can be modified to fit non-TC frames
- Made in the USA by Twisted Choppers
Technical Specifications
- Length: 9-1/4″
- Width: 8-1/8″
- Height: 2-7/8″
- Oil Line Fittings: 1/8-27 NPT
- Material: 14-gauge steel
- Capacity: 3 quarts
- Mounting: 2 tabs included
- Weight: 6 lbs
Fitment Notes
- Designed specifically for Twisted Choppers Big Twin drop-seat frames where under-transmission oil tank placement is required
- Can be modified by a qualified fabricator to fit other frames
- 1973-Up Big Twin oil pumps and 1977-Up Sportster oil pumps are compatible – these are not gravity-feed-only pumps and will operate correctly with the tank mounted below pump level
- Verify frame tunnel clearance and mounting tab positioning before installation
Jeff C. –
Item fit well into my custom chopper. There was minimal adaptation work to fit mounting holes.