As max mentioned, the 18L tank bolts right on and the seat is required, but what a great excuse to upgrade to the "comfort" seat. If you use this tank, you will also need to order a locking gas cap and the appropriate fuel line as it is molded so as not to kink.
18L tank part#58407013400 $369.00
Comfort Seat part#57907340000 $93.95
Gas Cap part#58407008100 $69.64
Fuel line part#58407016000 $4.34
KTM has everthing in stock and available.
2013 Husky TE511
2014 KTM 350 XC-F
2006 KTM Adv 950
2001 KTM 640 LC4
I only like two kinds of women, foreign and domestic