Stans Crest MK4 29er Wheelset (Boost)

“Crest” is the name Stan gave one of his original rim designs, and today it belongs to one of the most advanced rims made. Built of 6069 alloy and featuring a reinforced spoke bed and welded seam, the 25mm wide Crest MK4 rim is made to handle both the higher pressures of 40mm gravel tires, as well as the lower pressures of 2.3″ mountain bike tires.

The asymmetric design of the Crest MK4 rim improves spoke angle to create a stronger wheel, while still offering the easiest to inflate and most reliable airtight tubeless seal found only on Stan’s patented Bead Socket Technology rims. Built for people who ride, by people who ride, the Crest MK4 wheelset relies on the proven strength of traditional J-bend spokes. Front and rear and both sides all use a single length, making replacing damaged spokes as easy as possible.

A legendary rim deserves a legendary hub, and the Crest MK4’s M-pulse hubs deliver. Designed in partnership with Project321, and CNC machined in their Bend, Oregon shop, M-pulse freehubs use an innovative Neodymium magnetic pawl design that offers an incredibly positive and reliable engagement with virtually no drag. Unlike traditional pawl and spring designs that create unnecessary friction when not engaged, the magnetic pawls of the M-pulse hub are at their strongest when engaged while minimizing drag when disengaged. Multiple teeth on the pawls distribute load to increase strength and durability even more, while a full set of Enduro bearings and 7075 alloy 17mm axle allow the M-pulse to handle more than twice as much force as Stan’s previous hub designs. All this in a hub that engages with only1.66° of rotation for instant acceleration.

Key Specs :

• 25mm rim width optimized for Gravel and XC tires up to 2.3”
• Light and durable 6069 aluminum with welded joint and reinforced spoke bed
• BST-Asymmetric design combines Stan’s legendary easy tubeless inflation with a stronger, more balanced wheel build
• M-pulse ultra-low drag magnetic pawl adjustable hubs with 1.66° engagement
• Enduro bearings with double-row freehub bearing
• Matched wheelsets use traditional J-bend lacing and share a single spoke length for easy serviceability