Our Retainer Chainring has a narrow/wide tooth configuration designed for 1x10, 1x11 and 1x12 set-ups without the need for a chain guide.*New for 2020* - New tooth profile option compatible with Shimano 12SPD drivetrain systems, a narrower tooth profile designed specifically for use with Shimano 12SPD chains. This differs to our Standard chainring and is now offered alongside Standard Retainer Rings.Key FeaturesNarrow/wide tooth profile designed to retain the chain without the need of a chain deviceDesigned to suit 104 PCD 4 bolt cranksetsQuieter drivetrain and Reduced dragCompatible with 9spd, 10sp, 11spd and 12spd set-ups104 PCD available in 30, 32, 34, 36 and 38 tooth96 PCD available in 30, 32 and 34 toothShimano 12 Speed available in 32T and 34T (104BCD Black only)Available in our 6 standard colours (96 PCD in black only)