SUGINO SUPER ZEN144 BK Chainring Review Posted by GiantPandaisy July 18, 2018 in Drivetrain Components P.C.D. : 144mm Chain Size : 1/2″ x 1/8″ Teeth : 44T – 55T Surface : S3 BLACK (Super Smooth Surface) NON NJS Cycling Outdoor Recreation Parts & Components Sports & Outdoors Sugino