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The Challenge Gravine Pro Handmade TLR was built for riders who have outgrown all-around gravel tires and want something that performs on genuinely aggressive terrain
Packable enough to carry on every ride as insurance
aggressive enough for hard efforts and comfortable for extended wear and hike-a-bike
The stem measures 85mm from minimum insertion to maximum insertion
and broadly compatible with other Shimano road Hollowtech II cranksets including 105
Factor Aluto - Raptor Blue | 56cm | Custom Size:56cm The Challenge Gravine Pro HandmadeIs the Factor Aluto the Right Gravel Bike for You? The Factor Aluto in Raptor Blue is a gravel race bike built to feel alive across every kind of terrain you put under the tires, combining a lightweight carbon frame with race focused geometry that prioritizes agility, speed, and responsiveness without leaving you beaten up after five hours in the saddle. Factor tuned the Aluto with short chainstays, a steeper head tube angle, and a lowered bottom
