Cadex, the high-end component brand from Giant, has ventured into the mountain biking arena with its inaugural Max XC WheelSystem. Weighing in at a claimed 1,248 grams, this carbon wheelset is engineered for elite cross-country racing, combining lightweight design with exceptional stiffness and power transfer.
Innovative Carbon Spoke Integration
A standout feature of the Max XC is its bonded carbon spokes, which are directly integrated into the carbon hub flanges. This design forms a unified hub-and-spoke structure, aiming to minimize flex under hard pedaling. The Dynamic Balanced Lacing (DBL) system employs a wider spoke-bracing angle to balance spoke tension as pedaling load increases. The wheelset comprises 20 spokes in the front and 24 in the rear, with lightweight titanium threads at the ends of the carbon spokes. (bikeradar.com)
Enhanced Stiffness and Durability
In Cadex’s internal testing, the Max XC demonstrated a 5.3% increase in lateral stiffness compared to the Roval Control World Cup wheels, measuring 45.5 N/mm versus 43.2 N/mm. However, the Roval wheels were lighter, weighing 1,001.1 grams compared to the Max XC’s 1,247.6 grams. When adjusted for weight, the Max XC exhibited a 15.8% lower lateral stiffness-to-weight ratio. Notably, the Max XC rear wheel achieved a 111.2% higher transmission stiffness-to-weight ratio than the Roval, indicating superior power transfer efficiency. Additionally, the Max XC endured a 773.5 kgf compression load before failure, surpassing the Roval’s 440 kgf by 75.8%, highlighting its enhanced durability. (bikeradar.com)
Advanced Hub Mechanism
The M1-C120 rear hub features a 120-tooth Helical-Bevel Ratchet Drive System, providing a 3-degree engagement angle. A 10-degree helical interface between the ratchet rings ensures smoother engagement, while the Wave Spring maintains consistent engagement force. Ceramic bearings are utilized in both front and rear hubs to reduce friction and improve performance. (bikeradar.com)
Rim Specifications
The carbon rims have a depth of 22 mm and an internal width of 30 mm, with a hookless profile compatible with tires ranging from 2.2 to 2.6 inches. Designed for 29-inch wheels with Boost hub sizing, the rims feature a 5 mm Wide Guard edge. This design helps reduce sharp contact with the tire sidewall during impacts, protecting the rim and decreasing the likelihood of pinch flats. (bikeradar.com)
Pricing and Warranty
The Max XC WheelSystem is priced at $4,000 USD, €4,200 EUR, or £3,500 GBP. In the United States, the front and rear wheels are also available separately for $1,650 and $2,350, respectively. Cadex offers a lifetime warranty and a five-year incident replacement program for registered original owners, underscoring their commitment to quality and customer satisfaction. (bikeradar.com)
In summary, the Cadex Max XC WheelSystem represents a significant advancement in mountain bike wheel technology, offering a blend of lightweight construction, innovative design, and enhanced performance tailored for competitive cross-country racing.