e*thirteen DRS ChainguideViews:
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|Miscellaneous||e.13 guides offer a straightforward installation process and reliable design that makes them today's popular choice. The DRS (dual ring security) replaces your outer chainring with a bashguard and allows the use of the two inner chainrings. Fits frames with ISCG tabs, or can be mounted under the right-side Bottom Bracket cup for some applications. Fits 4 bolt, 104mm BCD crankarms. Covers a 32-36T middle position chainring.|