Sugino ZEN Track Racing Chainring - 144BCD NOS
Sugino ZEN Track Racing Chainring - 144BCD NOS NJS stamped
Sugino developed the ZEN as the ultimate track racing chainring. Its ultra-round, incredibly rigid construction features SSGN tooth profile, for rounder valleys and smoother teeth for reduced chain noise, enhanced chain engagement and increased durability. 7075 aluminum is stamped, machined, and polished smooth, for a supremely stiff and lightweight track ring.