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"These wheels have a lot going for them, not the least of which is the very reasonable price tag. I'd venture to say that the Aspin SL wheels have one of the best price-to-performance ratios I've ever experienced." Zack Vestal, VeloNews Tech editor. Read more..

Rims: The Aspin SL rim is designed for the rigors of everyday use. The 22mm tall, single cavity, alloy rim offers excellent lateral and torsional stiffness with additional toughness at a new low weight. The brake sidewalls are CNC-machined for smooth, consistent braking performance. Built for everyday use - including race day.

Hubs: The Aspin SL's are built around the ST2.2 proprietary hub with CNC machined flanges to remove excess weight. The front hub has a wide flange placement which increases the lateral wheel stiffness. The rear hub features our Patented Differential Flange Diameter, which effectively doubles the number of pulling spokes and creates a more durable wheel. Black, CNC machined, hub shells with oversized alloy axles and sealed cartridge bearings provide high strength, stiffness and light weight.

Freehubs: The forged aluminum freehub body has 3 independently driven hardened steel pawls. The system is strong, simple and dependable.

Spoke & Nipple: The Aspin SL wheel set features paired, 14/17 gauge [front] and 14/17 and 14/15 gauge [rear] custom butted spokes with wrench flats and internal alloy nipples to create a quicker accelerating, faster climbing wheel with superior, long-term durability. Self-locking thread technology ensures wheels stay true longer. Our patented, Self Aligning Nipple™ design significantly increases spoke fatigue life by allowing the nipple to orient to the spoke angle with less bend.

Extras: Rolf Prima Aspin SL wheel systems include custom reinforced rim tape and steel quick release skewers.