FE/FC New to Me 2020 Husky FE 501S

Bought my fourth Husqvarna in early August of 2020, found a lightly used 2020 FE 501S with only 320 miles. My prior Husky was a 2009 TXC 250 (300 cc big bore kit) that I sold near the end of July when the market was hot (previously to that I owned a TR 650 Terra and TE 630). Mods to the FE 501S include getting rid of the OEM extended plate holder (used existing fender and tail lights / turn signals), replaced the OEM mirrors with the Double-Take Enduro model.

Recently got the bike back from a local performance shop (2 Wheel Dynoworks) today. Had them first do a baseline run with the stock intake, exhaust, and fueling; baseline wheel horsepower (WHP) was 37.07 with the power & torque curves being pretty rough. They then installed the Pro Moto Billet / Fastaway exhaust end cap, partially drilled out the noise baffle in the exhaust can, and adjusted the fueling with a Power Commander V (PCV); WHP increased to 45.14 with much smoother power & torque curves. They then removed the reed block in the intake and re-adjusted the fueling with the PCV; WHP increased to 55.25. All dyno runs with the stock TKC 80 rear tire. Initial riding impressions including smoother take-offs from a stop, more consistent low speed throttle control & feel, and much improved mid and upper range power. Exhaust sound is louder, but not as loud as an aftermarket exhaust can.

Wow! Those are amazing power gains, nice work. Makes me wonder what's waiting inside my stock '16 FE350. -Ed

Recently installed some more off-road specific tires, went with the Dunlop Geomax EN91 Enduro. Tested them out trail riding over wet roots, rocks, and mud and they gripped a lot better than the OEM Continental TKC 80s. Makes the 501 even more fun to ride with the type of tires it should have been equipped.