I can't find it anywhere, and am not happy with the 1/4" or 5/16".  The hoses available at the parts stores are 1/4" or 5/16" and are too fat to fit on the fuel tank nipples.  The tygon is too thin for the clamps to work.  Screw clamps or no clamps are just a bad idea IMO.

Is there any other solution than paying $30 to special order 3 feet of OEM suzuki hose?

Might as well order $20 worth of 5mm vaccum line while I'm at it too, lol.  The vacuum line at the auto parts stores is also too fat.  I found some 7mm volkswagen fuel hose on ebay but it looks thicker and reinforced so I'm not sure it'd fit.

I feel like Goldilocks here, and the porridge is too hot, and it's the only thing keeping me from riding my motorcycle.

i  managed to fit 5/16'' with small hose clamps. its tight but it works and doesnt leak. i wasnt about to pay that 30 bucks when i got 3 feet of 5/16 from my suzuki shop for 3 dollars

I just bought 5 foot of 5/16ths from Napa for about $1.30. It is pretty thick hose, but I put some 1/2" hose clamps on and I think it fits pretty well. The only tight spot was the two fittings that come out of the bottom of the gas tank. I put both hoses on and just put one bigger hose clamp around the two of them. Again they're thick enough that I think the one clamp kinda smashed them together and they'll do fine. Otherwise you're just gonna have to order 7mm online, but I doubt you'll find it in a store anywhere. I think 95% of the people on this board use 5/16ths and are fine with it.

Thanks, I'll just go for the oem I guess.  If it were something less critical I'd try to make something else work.


It amazes me since every single sportbike out there has metric hose yet the bike shops only have SAE.  They probably choose not to import it from whatever japanese suppliers because they figured 95% of people here wouldn't pay 50% more for it.

95% of the beginner motorcycles I see are cobbled together with mickey mouse repairs too, I guess I'll be the exception. 

I bought actual GS500F fuel hose from Bike Bandit a few weeks ago, so you are not alone. I dont like bfuel leaks.

I have plenty of PU hose but the step from 8 to 7 makes me want to use stepped hose.

I just went to the yamaha shop in town and with a piece of old hose, matched it nicely. 7.50 for 2 feet. more than enough was the right hose.  Thats where id start.  a nickel here or a dime here? To me its like driving across town to save 5 cents a gallon on gas. or not getting premium because its 15 cents more than 87. equates to a difference of like 3 dollars in the end. oh well. What does three dollars matter when your spending tens of dollars, Or hundreds when spending thousands.

low pressure 1/4" will work and is actually smaller than the oem.  If you got it from an auto parts store, it's probably fuel hose for a pressurized system which is not what we have.  Check a bike shop or a small engine repair place or somewhere that would have small engine stuff.
I have the standard pro-motion 1/4" stuff on my bike. The space is a little tight on the fuel nipples, and the longer nipple is only covered up to the clamp on the shorter, but it's good.

Quotelow pressure 1/4" will work and is actually smaller than the oem.  If you got it from an auto parts store, it's probably fuel hose for a pressurized system which is not what we have.  Check a bike shop or a small engine repair place or somewhere that would have small engine stuff.
I have the standard pro-motion 1/4" stuff on my bike. The space is a little tight on the fuel nipples, and the longer nipple is only covered up to the clamp on the shorter, but it's good.

+1. I work in a small engine shop and actually just finished tonight doing my fuel lines with 1/4" Briggs and Stratton fuel line. Get the good stuff though..it will say "not for sale in Cali". Also, a trick to get the lines over your nipples (lol) hit the ends with a hammer or something. This breaks down the molecules inside the line (no joke) and they will stretch over the nips. Add some lube as well. (this is going in two diff directions hahha)

I use 1/4" tygon, cutting the end on a slight angle to get it up over the nipples, and spring clamps for 1/4" from advance auto parts

Why are screw clamps a bad idea?  Are you referring to hose clamps like these?

I bought both 5/16 and 1/4 inch polyurethane from CRC2. The 5/16 works fine, fits snugly, has needed no clamps. The 1/4 would be a b*tch to get on - I'll use it on something else.

Quote[Why are screw clamps a bad idea?  Are you referring to hose clamps like these?


/quote]

they aren't to me. The worse idea is to not have any at all, and then also I dislike the quick clamps that are stock. The worm clamps in the picture are great- I trust them most of all.

Quote from: dauphinc on March 03, 2010, 10:43:01 AMthey aren't to me. The worse idea is to not have any at all, and then also I dislike the quick clamps that are stock. The worm clamps in the picture are great- I trust them most of all.

Same thing for me...I'm wondering what CC's reasoning is 

Are you near a marina? I find that I can get fuel line cheaper from the boat places than the auto places. Plus they seem to have a better range of sizes.

Quote from: badguy on March 04, 2010, 06:17:47 AM

Quote from: dauphinc on March 03, 2010, 10:43:01 AMthey aren't to me. The worse idea is to not have any at all, and then also I dislike the quick clamps that are stock. The worm clamps in the picture are great- I trust them most of all.

Same thing for me...I'm wondering what CC's reasoning is 

I think the reasoning is that if overtightened they can dig in and cut the fuel line. I use them on 5/16 inch fuel line on my gs500. Ive cut through the line once with one at the frame petcock. didnt notice until the next morning when half the tank had pissed out all over the place.

I hadn't thought about that...good point.  I still like them; I'll just keep making sure I don't overtighten them

Wow this is an old thread.  I'm ordering OEM stuff now.

Tried 5/16 tygon and wasn't happy with it, a little too loose.

If I use screw clamps I try to get ones that have a longer strap to protect the hose from the threads.

My other issue with screw clamps is as the rubber hardens and compresses over time, the clamp loosens up because it is a set diameter.  A spring clamp will hold tight no matter how much the hose deteriorates.

These rubber lines are rock hard btw.  Maybe the ethanol in the gas?  And now they are talking about going up to 15% here in Cali.

I think this hose is spec. Please confirm. It's also "ethanol approved up to 85%".

https://www.belmetric.com/multifuel-hoseethanol-approved-c-14_662/rhm7-flennor-multifuel-hose-7mm-p-3720.html

Quote from: 78530i on June 02, 2016, 07:06:38 PM
I think this hose is spec. Please confirm. It's also "ethanol approved up to 85%".

https://www.belmetric.com/multifuel-hoseethanol-approved-c-14_662/rhm7-flennor-multifuel-hose-7mm-p-3720.html

These things are near impossible to get on the tank petcock.
This thing works on nearly all other bikes, just not a GS.
Try a tygon fuel line - look on ebay, and that usual 5/16th whatever works OK.
Cool.
Buddha.

I used the 1/4" ID Tygon tubing and it fits perfectly.  It is snug and secure with no hose clamps anywhere.

Best part is that the Tygon lines fit on the tank valve without interfering with each other!  I'm telling you guys, get this stuff.  It's so nice.

https://www.amazon.com/gp/product/B00FEYMHKS/ref=oh_aui_search_detailpage?ie=UTF8&psc=1