Race Face 104 BCD Narrow Wide Chainring Face The Race The Race Face 104 BCD Narrow Wide Chainring features a narrow-wide tooth profile that ensures the ultimate chain retention, no matter what you ride on or how hard you go. It's built from aerospace-grade 7075-T6 aluminum for excellent durability, strength, and light weight. The stiff 4mm plate thickness and I-beam construction transfer loads without flexing, making it reliable and efficient. Features Narrow Wide tooth profiling ensures ultimate chain retention Stiff 4mm plate thickness and I-beam construction transfer loads without flexing7075-T6 aluminum aerospace-grade strength Reversible laser-etched graphics because details are crucial NOT Compatible with Shimano 12-speed chains. Grab a 12 Shimano-specific 12-speed Race Face chainring HERE. SPECIFICATIONSDrive Train Speed10, 11, 12-Speed Tooth Count30, 32, 34, 36, 38TBolt Center Diameter104 BCDMaterial7075-T6 Aluminum Intended Use All-Mountain, Enduro Weight70g (32T) | Race Face | 104 Bcd Narrow Wide Chainring | Green | 34 Tooth | Aluminum