DT Swiss has been progressing their rim product line steadily. At present, DT Swiss offers some of the best rims in the market place, if you were to take into account rim weight, strength, durability, easy of use, (tubeless tire setup), precision rim finish, performance, and aesthetics. Don't believe us, maybe you'll believe Terry Bradshaw. The DT XM421 is an excellent Trail / XC rim. 25mm wide, light weight and fast, but designed to handle more. It's extremely strong, a bit heavy for a all-out XC racing rim, but excellent in it's ability to reach further into the full suspension/Trail riding spectrum. These wheels will work without fuss over roots, ruts, small drops, or basic everyday riding trails. The XM421 looks daper with it's shot peened-esk finish, has attractive decals, and builds up oh so smooth. If you're into racing (Doh! not that kind of racing), riding hard, or you simply prefer to buy really nice gear, this is your starting and finishing point. Pretty straight forward.
You have the choice to build these wheels with Speed Tuned Super 6 2.0 MTB hubs, or go all out with DT Swiss 350 disc hubs featuring the DT Swiss Star Ratchet engagement mechanism. Both are great options. The Speed Tuned Super 6 2.0 hubs feature 36 points of engagement, (10 degrees) via a 4x2 pawl free hub. The drive ring and pawls are overbuilt in terms of diameter, (drive ring), height, (drive ring + pawls), and materials, (quality stainless). Their bearing placement is proper, in terms of overall design meant to promote hub function and durability.
DT Swiss 350 hubs are excellent, they are finished to incredible standards, and include DT Swiss' Star Ratchet engagement system, (same exact drive mechanism as with their DT 240's and 180's). These hubs get the job done, hold up extremely well in an assortment of conditions, and have proven reliable even in the emerging context of high torque drive trains, (29er wheel bikes with 1x12 Eagle drive trains). Essentially, DT 350's offer you the option of buying one of the best performing hubs available anywhere, for only a modest price bump. Given their huge value proposition, they are hands down a great option for any MTB rider that cares about their gear.
In "stock" form, these wheels are built with DT Swiss Competition Double Butted 2.0/1.8/2.0 black spokes in a 32 hole, three cross configuration front and rear. DT Comp spokes offer legendary quality and performance. If you didn't know a thing about spokes, know that your wheels would come with a really top notch spoke product. That being said, we're offering a spoke upgrade option, in the form of Sapim DLight 2.0/1.65/2.0 spokes. There are two great spoke manufacturers in the world, DT Swiss and Sapim, (in alphabetical order). Essentially, you might be able to find a spoke product that approaches their quality, but you'd be hard pressed to find a company that makes a better spoke product than these two. All their spoke products, from straight gauge to their elliptically bladed and butted products, are all the best of the best. Sapim Dlight spokes will perform at the same relative level as DT Competition spokes, but will shave off approximately 75 - 80g from the wheel set.
The XM 421 is a stellar wheel set option, in a field that's composed of some of the best aluminum alloy MTB rims ever. Given their level of performance, they are an unbeatable deal, (coupon codes here). We're not joking around here. If you don't have a lot of time to research all the rim options in the marketplace, if you don't have a lot of money, and if you can find this product page, maybe that's Magic.
-Comes with tubeless tape & valves installed.
-The DT Swiss XM421 (welded joint), has a 25mm inner width, is 21mm tall, 34mm wide, and weighs about 470g
-Recommended for use with 29er x 2.1" - 2.4" tires
-These wheels are built with internal stainless steel washers.
-Wheel set weight with Super 6 2.0 15/142 hubs and alloy nipples is approximately 1815g (Comp) or 1740g (Dlight); with DT 350 hubs wheel set weight is approximately 1840g (Comp) or 1765g (Dlight). Wheel set weight will vary with end caps, freehub driver, and nipple selection. Tape + Valves adds approximately 35g for the wheel set, on average.