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- Ceramic ball cartridge bearings for maximum life, smoothest balls and the lightest weight - Left and right bottom bracket cupset. 1.37" x 24tpi (English threads) - BB-8200 for K-Force Light and SLK Light Road MegaExo cranks only (BB-8200 has a narrower overall width for a lower Q factor and the bearing covers have been redesigned so that the spindle now rides directly on the bearing itself)

Designed for aggressive XC use, Stan's ZTR Arch EX Wheel loves technical trails. The "arch" rim shape is strong and stiff while keeping the weight low for a durable, responsive ride. Plus, the Arches are built up with Stan's 3.30 hubs and DT Swiss spokes to keep you rolling quick. And, this slick wheel uses Stan's BST technology for easy tubeless conversions, while the rim's wide internal profile and lowered sidewalls boost tire volume for enhanced traction.