Shimano GRX 400 Brake CaliperReady for adventure, the GRX400 gives you hesitation-free operation as you conquer rough roads, gravel and mud. Shimano has also made bleeding easy and clean thanks to its one way bleeding system, which prevents air from getting into the system. With a streamlined oil route throughout the system to prevent air bubbles from being captured, you'll enjoy more efficient maintenance when required.Heat Resistant Gravel Brake CaliperTaking your braking set-up a step further, this caliper's piston uses Ice Tech technologies which avoid the negative impacts of long rides, especially on downhill journeys. Furthermore, its technology does this by using ceramic material to avoid heat transfer for constant stable braking, providing efficient stopping power without loss. PLus, it features convenient tool access for simple wheel replacement and installation.Features:  Use: Gravel, Road Mount: Flat mount  Excellent heat dissipation  Convenient tool access  Simple wheel replacement  Easy and clean bleeding system  Never hesitate to tackle rough surfacesSimple set up and maintenanceTechnologies:  Reach Adjust: Brake lever is equipped with a reach adjust mechanism. The distance from handlebar grip to lever can be adjusted to suit any hand size, type of riding and individual rider preferences. A 2-year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.