I've been searching for a Thule crossbar & foot kit that works on the niner roof rails for a long time, not willing to pay the 300$(ish) the kit costs new - never found 'em on ebay or local market platforms for a good price.
Today googling for the part numbers once again, I realized that a vehicle I had about 20 years ago used the same roof rail foot for the crossbars - I had bought the foot and bars new in 2004 along with two Thule bike racks to carry my DH bike and trail bike. I sold the vehicle in late 2006 and bought my first XJ, in which I couldn't use the Thule setup I had.
I wasn't sure if I had sold the foot pack during all these years, so after my workday I went to check the garage shelf and after a while found a dusty box - it was the Thule 755 kit I needed. Luckily my brothers' bike rack setup was also stored in the garage (he's been using my crossbars and bike racks with his own vehicle- specific foot for years), so I could measure the cross bars and do a test fit. They fit perfectly.
These are rated for ~220lbs. (100kg) load, and I can assure they easily support that weight at highway speeds or on bumpy roads - unlike OEM 5.9 cross bars which collapse/ fold WAY before their specified load limit of ~150lbs.
I guess this is one of those "better late than never"- occasions. Having bought my first niner in July 2010 and cursing the pathetic OEM roof bars since day one - and I've had the correct kit in the garage all these years 😂
