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e*thirteen Extended Range Cog


Make your move to 1X and crush the steepest climbs with the EX cog.

Shifts stay crisp thanks to e*thirteen shift know-how and the anodized aluminum resists flex under heavy power. Pair with a dual width Guidering M and you are ready to go.

What's in the box: EX Cog, long B-limit screw

Type: Cassette


Cog material Aluminum
Thickness 5mm
Compatibility 10 speed
Ring Sizes 40t, 42t Shimano™ – 42t Sram™
Features Replaces 15t or 17t cog on existing cassette. Extra strong at base to prevent flex, stand-offs brace EX cog against cas­sette rings or carrier. Includes longer B-limit screw for proper adjustment.
Color Black, Red, Blue
Weight 70g (40t) 77g (42t)

Tech Info

Guaranteed to be free from defects in materials or workmanship for 5 years after original purchase

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