Seat tube E-type mounting NEW!
Includes chainline alignment wave spacers NEW!
Extremely light at 49 grams! NEW!
World Championship gold medal-proven top slider design
Easily change chains and chainrings w/o removing slider NEW!
Captive gold anodized alloy hardware
Gear range up to 42T, small enough for the steep Mont Saint Anne climbs and big enough to win Glouchester, Massachusetts! NEW!
7075 aluminum backplate NEW