e-thirteen Helix Plus e*spec 9-50t 12 Speed Cassette XD Driver 5D Intelligent memory circuit remembers the

Intelligent memory circuit remembers the last used brightness level and mode when turned on again

Please note that the operation of this type of modified electric bike on public roads may be against the law in some countries

Alloy barrel with plated steel piston shaft

We offer you total peace of mind with a lifetime warranty

e-thirteen Helix Plus e*spec 9-50t 12 Speed Cassette XD Driver 5D Intelligent memory circuit remembers theINDUSTRY LEADING: Helix Plus 12 speed, 556% Range, 406g More Range, Less Weight Engineered for E bike durability and cross experience compatibility with SRAM and Shimano drivetrains. This 9 50T combination is the hot set up for your 12 Speed MTB and allows for a 2 tooth smaller front chainring, shorter chain length, more clearance and range with our exclusive 9 tooth smallest cog. Future proof your bike, save weight and cash with the Helix Plus