These are a bit lighter than modern derailleurs, since the cable can only come from a single direction as opposed to modern dual pull models. The reinforced chain guide is high strength and stiff for improved shifting. Designed specifically for use with 9 speed chains.
Weight: 123 grams
Compatibility: Mega-9, accommodates 44-48 tooth large rings
Feature: Special cross section increases Chain Cage rigidity for improved shifting response