Harley Davidson FLSL Softail Slim 2020 Service Manual

When Harley folded the Dyna lineup into Softail for 2018, the Slim came out the other side genuinely transformed rather than just rebadged — 16kg lighter and with a noticeably greater lean angle than the Slim models that came before it. For 2020, that reworked platform carries on with no significant updates, letting the stripped-down, post-WWII bobber styling do the talking.

The formula stays deliberately minimal: spoked wheels, chopped fenders, floorboards, a tuck-and-roll solo saddle, and a 2-into-2 shotgun exhaust, all built around H-D's Milwaukee-Eight 107. Bore and stroke measure 3.937 in. and 4.374 in. for a 107 cu in displacement, with a 10.0:1 compression ratio and a claimed 109.9 lb-ft of torque, running through electronic sequential port fuel injection. A racing-style cartridge fork up front keeps things light with linear damping, while the hidden rear mono-shock preserves the classic hardtail silhouette the Softail name promises.

Dimensions run 90.9 in. long with a 64.2 in. wheelbase, 30-degree rake, and a genuinely low 25.5 in. laden seat height. It rolls on a 130/90B16 front and 150/80B16 rear tire, carries a 5-gallon tank, and ships at 642 lbs (671 lbs in running order). 2020 colors included Vivid Black, Black Denim, Barracuda Silver Denim, and Billiard Burgundy, with pricing starting at $15,999.