This Sinister Custom Harley-Davidson Fat Boy Promises A Rush Of Adrenaline With Its 2100cc Heart

Looks so dark and dapper that it could star in the next Batman movie

The Fat Boy has been part of the Harley-Davidson family for over thirty years now and it’s been a chrome-laden cruiser for most of its life. However, proving that the Fat Boy can rock the sinister charm too, custom bikemaker Box 39 has converted it into an all-black monstrosity that looks ready for starring in the next Batman movie.

Custom Harley-Davidson Fat Boy By Box 39

This Sinister Custom Harley-Davidson Fat Boy Promises A Rush Of Adrenaline With Its 2100cc Heart
- image 1084178

Dubbed the Fat Box, the build began from the down low with stock solid wheels making way for massive 18-inchers. The new wheels are solid too but have a dapper black and silver finish to amp up things. The new wheels also meant the stock fenders were no good, so Box 39 proceeded to partner the wheels with custom-made front and rear fenders. In case you’re wondering, the front wheel has a 160-section tire while the rear proudly redefines “fat” with its humongous 280-section unit.

This Sinister Custom Harley-Davidson Fat Boy Promises A Rush Of Adrenaline With Its 2100cc Heart
- image 1084176

Like the wheels, everything - headlight nacelle, suspension, engine, and the tank - is gloss black with barely any chrome left, giving it a properly sinister look. Meanwhile, to further enhance the looks, Box 39 swapped the stock rear suspension with a pneumatic unit, which lowers the stance of this beast. The chassis and front suspension remain as it is, though.

This Sinister Custom Harley-Davidson Fat Boy Promises A Rush Of Adrenaline With Its 2100cc Heart
- image 1084173

With the appeal spruced up, the bikemaker went on to tweak other aspects of the bike. For starters, a flat, all-black handlebar replaces the stock, swirly unit. This, coupled with the custom footrests and seat, ensures a more aggressive riding posture.

Finally, everything comes together with an array of engine mods. Things are no longer “stock” as the Fat Box boasts a Screamin’ Eagle Stage Four engine kit which bumps the cubic capacity from 1868cc to 2146cc. Not to mention, you also get a full-system exhaust and an aftermarket belt-pulley system to round things off.

This Sinister Custom Harley-Davidson Fat Boy Promises A Rush Of Adrenaline With Its 2100cc Heart
- image 1084175

Other little updates on the build include a custom filter cover, brawny radiator guard, and handlebar-mounted mirrors, while the levers, switchgear, and instrument console remain bone-stock.

Can You Buy It?

Sadly, there’s no news on whether the Fat Box is up for grabs. But what we do know is that this is one staggering build and there’s a high chance someone’s already taken it home.

Source: Box 39

Punya Sharma
Punya Sharma
About the author

Related Articles

Rendering: This Electric Motorcycle Aims To Replace Your Favorite Adventure Bikes For Mountain Patrols

The Harley-Davidson “High Piper” Is A Bananas Custom Street Bob Inspired By Iconic Retro Cruisers

This Custom Harley-Davidson Road Glide Special Costs More Than A Ford Mustang Mach 1!

The Special Edition Harley-Davidson Pan America 1250 & Tri Glide Will Evoke The Patriot In You

Johnny Depp’s 1955 Harley-Davidson K Model Could be the Ultimate Collectible

These Two Custom Harley-Davidson Dyna Low Riders Show Just How “Fun” Hogs Can Be

What do you think?
Show Comments
Motorcycle Finder: