I got tired of the extenders with my 404's. Bicycle ranch has tubes with 80mm valves. It's awesome, I would try that. My take on it...

Thanks, but... tubulars.

When I was going w/ clinchers, I had figured the 80mm tubes were the ultimate solution.

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The Tufo extenders are great. A 40mm + 28mm works great for the 808. The 40mm is fine for the 404, but for your spare, I'd go with the 40+28 as it will work fine on the 404, just be a bit long.

You can get them at TriSports.com: http://www.trisports.com/devaex.html

I use some Teflon paste on the threads, but the extenders do have an o-ring. I figure better safe than sorry...

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"Non est ad astra mollis e terris via." - Seneca | rappstar.com | FB - Rappstar Racing | IG - @jordanrapp

My 606's came with Zipp valve extensions, they are black, aluminium, and have Zipp laster etched in them, quite nice.