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Ships within 48 hours · Estimated delivery Aug 13 - Aug 18
extending rotor life and reducing maintenance
The dropper post lever is integrated into the ST-R610 shifter — no separate remote clutter on the bar
and Di2 wires through modern bike frames and handlebars
SAMCX carbon crankarm
and other hard trail impacts
Sumart Floating Disc Brake Rotor Size:203mm extending rotor life and reducingSUMART FR3H Floating Disc Brake Rotor Lightweight strength, better heat control, and consistent braking performance for road, gravel, trail, and race use. The SUMART FR3H Floating Disc Brake Rotor is engineered for riders who want stronger, smoother, and more consistent braking without adding unnecessary weight. Built with a 7075 aluminum carrier and a 410 stainless steel braking band, the FR3H is designed to improve heat management, reduce noise, and
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