Comments about Easton Haven 26" UST Wheels Magnesium 12:

I bought a set of Easton Havens from JensonUSA in May and have roughly 500 miles on them.

Setup: Running as a pure UST setup (UST tubeless tires) with no sealant and no flats since they were installed. 30 psi front and rear. QR front/rear (although I use DT Swiss RWS Quick up front for added stiffness, as my fork doesn't support a 15 or 20mm thru axle).

Type of riding: San Antonio's rocky trails. We are talking major abuse on wheels, shocks, and drive-train (I finally replaced my 44T with a bashring as over 1/3 of its teeth were destroyed from climbing rock shelfs).

Results: I am amazed at how tough these wheels are, especially for their weight! No dents. Spokes and alignment are like new.

Things I love about these wheels: 1) Bling factor (ok I'm vain), 2) Wider inner channel allows for wider tire, 3) Tremendous strength to weight ratio, 3) Freewheel sound isn't as loud as CK and others, 4) UST profile, 5) Easton customer service (slow but always effective), 6) Hubs can be adapted to different axle configurations.

Things that could be improved on: You can't just install and forget. You need to constantly check the hub bearings adjuster to make sure it isn't too loose (developing play) or too tight (which prematurely wears the bearings and slows you down). I would rather a "fire and forget" approach even if it meant swapping out the bearings every few thousand miles.

Tips: 1) Seating a UST tire to a UST rim is not easy. What worked for me: some dish detergent rubbed on the last section of tire bead you are trying to mount. This makes it easier for the bead to slip over the rim edge. 2) I also placed a tiny bit of silicone caulk around the circumference of the value on the inside of the rim so as to further reduce air leakage. I lose about 10lbs a week, which is no big deal. To eliminate leakage altogether you could use sealant, but that will require a different valve (with a removable valve core) or placing sealant in the tire while during the tire mount procedure. 3) Even if you only have a QA front/rear you should purchase the 15mm front and 142x12 rear. Then purchase direct from Easton the QR axles and follow their online instructions for swapping out the 15mm and 12mm rear with their 9mm/10mm counterparts. That way if you ever upgrade your bike or fork you can reverse the procedure and use the larger axles.

Bottom line: These are fantastic rims for all mountain riding and stand up to tons of abuse, while still be light weight enough to help you earn plenty of KOMs.

Comments about Easton Haven 26" UST Wheels Magnesium 12:

I have purchased multiple sets of these across my different bikes and overall have been happy. I was surprised though how easily I put a large flat spot in a back rim that I was using on my XC bike. Other than that they hold air great--even with minimal to no Stans. The rear hub does come loose but easy to tighten while on bike with a 20mm cone wrench.