Speed Merchant Fork Pre-load Adjusters For Harley These adjusters will replace your stock fork caps and allow you to fine tune your front suspension, with almost an inch of preload adjustment. Easily dial in your front-end preload without having to remove the stock caps and cutting spaces, with a turn of the adjuster. Features: Available in 39mm and 49mm sizes Finished in black, raw or gold CNC machined out of 6061 aluminum Comes with O-rings Made in the USA