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the helmet remains very light while still offering big protection
the 52 tooth cog steps down with improved gear progression with 44 and 38 tooth cogs in the low end (compared to the Eagle drivetrain 10-52-tooth cassette)
High-End Rubberized Tape
WHY IT WORKS
SHIMANO ST-R9180 DURA-ACE DI2 Triathlon/TT Hydraulic Disc Brake Set Side:Front the helmet remains very lightThe Shimano Dura Ace ST R9180 is a TT Triathlon hydraulic disc brake lever and shifter, compatible with 11 speed Di2 systems. It's paired with the Shimano BR R9170 hydraulic disc brake caliper. J kit fittings included. The Shimano Dura Ace ST R9180 is a TT Triathlon hydraulic disc brake lever and shifter, compatible with 11 speed Di2 systems. It's paired with the Shimano BR R9170 hydraulic disc brake caliper. J kit fittings included. Dual control