I'm thinking, the only way this thread would actually be useful is if you ACTUALLY have owned or currently own a product of the particular brand you are recommending.
Never owned a Hinson clutch? Recommend it anyway!

I'll throw one in. Factory Pro shift kits. I own one.

 

K+N filtercharger

 

1) Yoshi TRS Carbon Fiber Slip On Exhaust
2) Puig Race (DB) Windshield - Dark Smoke
3) HVMP Bar End (Short - 11.8 ounces - Stainless Steel)
4) Carbon Fiber Gas Cap Cover
5) Pazzo Levers - Shorty Set - Black Levers with Red Adjusters
6) Hotbodies Front Flush Mounts (Smoked)
7) HotBodies Fender Eliminator Kit

 

Bridgestone BT021 for touring purpose and yet can tackle corners as well.

 

I keep my bike stock, except for replacing the tyres. Only things I've added are Ventura rack & matching bag(s) for carting enough gear when I'm lucky enough to get my bum on the seat for an overnight ride or bring home a six pack from the shops. & Bagster tank cover because I want to protect the paint.

 

Track days

 

Good old fashioned once over with "Armour All",but not the Windshield!Or anything in Polycarb.

 

For those of us with older bikes, 520 X-Ring chain conversion with Vortex sprockets, Stage 1 Jet Kit, HID's and Pazzo Shorties.

 

NGK iridium plugs, AMSoil synthetic, Uni air filter. All brands that I trust and use regularly.

OEM clutch & filters, havent let me down.

 

^+1000000on the plugs