The 12t X-Sync Pulley wheels utilise SRAM's patented narrow/wide chainring technology to make this the most secure system going around

Internal width - 35mm

bump-resistant cylinders

Due to the intelligent design of the clamp

FOX Flexair Merino 6 Inch Socks - S/M - Rust PDP|PLP|Suits Freehub Type The 12t X-Sync Pulley wheelsA lightweight, breathable merino wool sock designed for all day riding comfort Features: Mesh zones provide added breathability Compression arch support for superior fit and comfort Rib knit upper wont slide down when the trail gets rough Flat stitch toe construction offers improved comfort Materials: 59% Merino Wool 25% Polyamide Nylon 12% Polyester 4% Elastane