TOPIC:

What is everybody using? The K&N looks nice but spendy. Suggestions?

Motion Pro 5/16 fuel line for 1981 GPz550

The factory fuel line is 7mm.  I like the Suzuki stuff, in part, because they send you about 2000 mm of the stuff.  It's the same size as the KZ fuel line.
pn 09352-70103-00B

I have been using these for over 10 years with no issues :



Emgo Fuel Filter - Black 5/16" #14-34432

They come in a assortment of anodized colors, 1/4" or 5/16" and have a washable filter element with sturdy O rings to seal it. The price is reasonable (I ditch the clamps)


 

I like using the Pingle fuel filters. If your using the stock petcock on the inline four use the single 2 in and 2 out filter. If you using the high flow single output petcock from Pingle use the 1 in and two out filter.  I like the single output petcock from them with 1 in and 2 out filter. Saves on the little room you have for multiple filters.
www.pingelonline.com/prodcat/fuel-filters.asp

There discretion don't match what they are showing but you get th idea on what they offer.