- 2" diameter

If the swingarm you are using is a different width

and these tanks are road-tested and ready for anything you can throw at them

These spring motorcycle seat components are sold as a pair and are a must-have for anyone building or upgrading their custom ride

if it is 50 year original equipment it may not be up to snuff

#8100-8 Chain Adjuster & Swingarm End Cover Kit 1973-1984 Harley-Davidson FX/FL 1979-1992 XL 1981-1987 FXR - Chrome Plated Subcategory_Seat Springs - 2" diameterChain Adjuster Swingarm End Cover Kit Chrome Plated fits Harley Davidson FX FL 73 84, XL 79 92, and FXR 81 87. Made in Ohio, USA.