90 degree valve stems ????

[Sourkraut]

I'm getting ready to replace front tire, and am wanting to put 90 degree valve stems in. Motorcycle Superstore has what I think I would like, but it gives 2 choces....8mm & 10mm. Can anyone tell me which size is required. I've looked in my big book and also talked to local Kawasaki dealer, and they can't provide answer. So I'm turning to the "real" experts.

Thanks....John/Sourkraut

[Piston720]

You could also just carry a 90 Deg adapter for those rare times you need to add air.

[AmphibSailor]

I belive it's  11.3mm for stock rims.
 

[Bob_C_CT]

Not sure since I don't have stock rims but make sure they install them pointing out to the right. I didn't tell them which side so mine are pointing left and when on sidestand makes it a little harder to get to.

[GeorgeRYoung]

I personally don't like the idea that centrifugal force is always acting on the right angle stem to bend, flex and maybe break it.

Here's the alternative I use to allow access to the air chuck:
https://www.kurveygirl.com/shop/product_info.php?cPath=27&products_id=71&osCsid=bf6decb22f96b435d209cff7bd092c05

[Sourkraut]

Thanks for replies. Here's another question concerning angled valve stems.

What do y'all think are the chances that a 45 degree valve stem, pointed to the right, could cause the serious scalping on the right side of my front tire???? I still have plenty of tread depth in center, but since I have a ride coming up, I have already bought a replacement for it.

Just wondering.

Thanks....John/Sourkraut

[Bill Hookman]

Whatever you do, DO NOT USE 90 DEGREE STEMS WITH RUBBER BASES THAT YOU PULL THROUGH THE RIM.  I had them and spent a morning at the Canaan Valley National replacing the rear one and was stranded on the side of the road on the way home when the front tore loose.  I have replaced both with straight stubbies that have the lock nut.  I had my rear 90 degree pointed left, so as not to have to deal with the brake rotor being in the way.  I don't see how a little valve stem would have any impact on uneven front tire wear, since it's weight is so minimal.

[Outback Jon]

I use these from KurveyGirl.com.  I replaced them after a couple of tire changes because I saw some cracks starting in the rubber gasket.  But once I removed them, I found that those cracks were extremely shallow and apparently only cosmetic.  There was plenty of good, flexible rubber still sealing everything.  They've worked great for 50k miles or so, now.  Next time I'm thinking about replacing them with the anodized aluminum ones, but that's just for the nicer look.  The ones I have work great and make filling the tires MUCH easier.   

[WANDRNG]

https://www.amazon.com/Oxford-Valve-Access-Tool/dp/B00GC299LQ

http://www.revzilla.com/motorcycle/oxford-valve-access-tool

[RWulf]

I guess that's why you never see them on winning race bikes.

[Rain Dancer]

I have used these and never had an issue:

https://www.motomummy.com/valve-stems/bridgeport-90-degree-angled-valve-stem-set/

[Greenie]

Whatever you do, DO NOT USE 90 DEGREE STEMS WITH RUBBER BASES THAT YOU PULL THROUGH THE RIM.  I had them and spent a morning at the Canaan Valley National replacing the rear one and was stranded on the side of the road on the way home when the front tore loose.  I have replaced both with straight stubbies that have the lock nut.  I had my rear 90 degree pointed left, so as not to have to deal with the brake rotor being in the way.  I don't see how a little valve stem would have any impact on uneven front tire wear, since it's weight is so minimal.

I'll second that! I've had a 90 degree valve stem on the back tire for 2 years. Yesterday it failed by leaking (splitting) on back side. Centrifugal force at high speeds pushed the valve toward the rim and the back side broke allowing a pretty fast loss of air. I had a short straight valve with a lock nut installed today.

[connie_rider]

https://www.amazon.com/Oxford-Valve-Access-Tool/dp/B00GC299LQ

http://www.revzilla.com/motorcycle/oxford-valve-access-tool

I like the adapter that WANDRNG posted.
I have a 90" screw on adapter for emergencies, but his is better.
I think I'll get one.

Ride safe, Ted