Lowbrow Customs Parts for Skinny 39mm Narrowglide Harley Front Ends

39mm Narrow Triple Trees for Harley

A narrow triple tree kit takes a stock 39mm Harley front end and pulls it in tighter, giving a skinnier, more mechanical look up front that most builders associate with a classic chopper stance. It's not a single part swap: getting there means matching the triple trees to fork tubes, lowers, an axle, and a wheel that all fit the new, narrower spacing.

Building a Complete Front End

This collection covers the full parts list for a 39mm narrow glide build: the triple tree kit itself, fork tubes in stock length up through 10-over stretch, tapered fork lowers in aluminum or black, a matching fork brace, and a narrow axle with matching axle hardware sized for the tapered lowers. A 21-inch spool hub wheel, in chrome or black, completes the front end with a look that matches the narrower stance.

Fitment and Rebuild Parts

Fork seal rebuild kits are available for 1988-and-up Sportster models and 1987-2022 XL models, along with hidden internal fork stop kits for 1989-1999 Softail models and fork neck cup kits for 1949-1987 Big Twins in smooth or grooved stainless steel finishes. Since a narrow triple tree swap touches the steering neck, fork tubes, and axle together, most builds also need fresh fork hardware to finish the job, so check the product listing carefully to confirm each part matches your specific year and model before ordering.