Twisted Choppers Sportster Drop Seat Oil Tank for Weld-On Hardtail
An oil tank that’s built into the drop seat section of a Sportster hardtail keeps the chassis clean and the oil system tucked away where it belongs. This Twisted Choppers Sportster drop seat oil tank is designed for TC weld-on Sportster hardtails and arrives pressure tested for a leak-free installation, with return and vent lines on top, feed at the bottom, and a filler neck on the right side.
Key Features
- Designed for Twisted Choppers Sportster weld-on hardtail builds
- Pressure tested to ensure a leak-free installation
- Return and vent lines on top; feed line on bottom; filler neck on right side
- Front side features backbone tunnel clearance and chain/belt relief on the right
- Oil fittings: 1/8-27 NPT
- Made in the USA
Technical Specifications
- Height: 4.5 inch
- Front-to-back depth: 5.5 inch
- Front length: 9 inch
- Rear length: 10 inch
- Backbone tunnel: 2.125 inch x .875 inch
- Chain relief: 1.875 inch x 1.25 inch
- Oil fitting thread: 1/8-27 NPT
Fitment Notes
- Designed for use with Twisted Choppers Sportster weld-on hardtail kits
- Requires welding to the frame hardtail section during installation
- Verify backbone and chain/belt clearance dimensions against your build before ordering








Dean F. –
Beautiful craftsmanship