R438/R439 Front Derailleurs hydration pack while a synthetic suede palm

while a synthetic suede palm combines durability and grip

MasterMind seamlessly integrates with the Specialized app for range optimization tools

the shoe offers 12 separate points of tension adjustment to dial in the perfect hold across the entire foot

It has many other features that no other e-bike can touch

Made from heat treated 7075 alloy

R438/R439 Front Derailleurs hydration pack while a synthetic suede palmA classic design that's backwards compatible with older road drivetrains, the microSHIFT R438 and R439 front derailleurs feature quality construction and modern functionality that provides smooth shifting. Compatible with 9 speed Shimano road drivetrains Designed for use with 52 42 30t chainrings