Challenge Gravine Pro Handmade TLR Tire - 700x40 Pedals 5mm Bottom Bracket

5mm Bottom Bracket

Left lever controls front derailleur (3-speed)

0 size is uncommon enough that having a spare on hand at all times is just smart riding

riders with biomechanical conditions that require significant foot rotation

Hydraulic hose not pre-installed

Challenge Gravine Pro Handmade TLR Tire - 700x40 Pedals 5mm Bottom BracketWhere Does the Challenge Gravine Pro Handmade TLR Push Gravel Further? 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. With a more aggressive tread pattern than the Gravel Grinder lineup, the Gravine is designed specifically to deliver in muddy sections and on rugged, rocky ground where traction matters more than pure rolling speed.