The Sun Helix series rims offer the performance and tubeless ready function of higher end rims, but at an attainable price point. The Sun Helix 25 offers one of the stiffest all mountain 27.5" (650b) rims on the market, (thanks to it's 18.8mm tall profile), while still being light enough to pedal up the mountain. The Helix rims feature a tubless ready 20.8mm inner profile, yet on average weighs only 450g.
You have the choice to go with Shimano XT centerlock or 6 Bolt loose ball bearing, cup+cone disc hubs, or upgrade a few notches with Speed Tuned D MTB sealed cartridge bearing disc hubs, (QR and TA, Shimano and XD available).
In "stock" form, these wheels are built with DT Swiss black stainless steel 2.0mm (14g) J-bend spokes in a 32 hole, three cross configuration front and rear. These spokes are an upgrade over most "new bike" spokes. Small details make big differences with regards to spoke wire, and even though there are lighter weight spoke options available, these straight gauge spokes still feature top quality stainless, with a precise finish that allows for precise wheel building. That being said, there is a spoke upgrade option available, DT Swiss Competition Double Butted 2.0/1.8/2.0 black spokes. DT "Comp" spokes offer legendary quality and performance. Even if you didn't know a thing about spokes, if you select this option, know that your wheels would come with a super top notch spoke product. Selecting "Comp" spokes and Alloy nipples will shave off approximately 80 - 85g from the wheel set.
-Comes with tubeless tape & valves installed.
-The Sun Helix 25 (sleeved joint) 27.5 (650b) disc rim has a 20.8mm tubeless ready inner width, is 18.2mm tall, 24.8mm wide, features single stainless eyelets, and weighs about 450g
-Recommended for use with 27.5 x 1.9 - 2.3" tires
-Wheel set weight with Shimano XT QR hubs and brass nipples is approximately 2070g (Black stainless w/ brass) or 1985g (Competition w/ Alloy); with Speed Tuned D MTB 15/142TA hubs (XD driver) the wheel set weight is approximately 1905g (Black stainless w/ brass) or 1820g (Competition w/ Alloy). Wheel set weight will vary with end caps, freehub driver, spoke, and nipple selection. Tape + Valves comes installed and adds approximately 35g for the wheel set, on average.