2018 Harley-Davidson Softail Fat Boy The original fat custom icon that changed it all has done it again. Satin chrome finishes. Beefy 240mm rear tire. And now available in a Milwaukee-Eight 107 or 114 Big Twin Engine for the most muscular, unstoppable Fat Boy motorcycle ever. Features may include: Satin Chrome Finishes An all-you-can eat portion of sculpted satin chrome gives the Fat Boy a look that ll make a big impact. Steamroller Stance A muscular look thanks to all-new solid-disc Lakester wheels wrapped in the widest front tire we ve ever offered from the factory at 160mm combined with a 240mm rear tire. Milwaukee-Eight Big Twin Engine A powerful, smooth-running engine with crisp throttle response and a pure, soul-satisfying rumble. Available in 107 and 114 engine displacements. Signature LED Forward Lighting Darkness-defying lighting that gives you greater visibility at night. All-New Softail Frame A lighter, stiffer frame (compared to the prior Softail and Dyna models) that takes the idea of form and function to a place it s never been before. It s the look of a hard tail from a bygone era that delivers a thoroughly modern ride. High Performance Front Suspension New suspension technology provides the performance of a racing-style cartridge fork for reduced weight with linear damping characteristics High Performance Rear Mono Shock All-new easily adjustable mono-shock rear suspension allows for dynamic cornering capability while preserving the hardtail look.