Ethirteen Helix Sram XD Cassette 12s 13-52 S3-Cat-EXTRacingShox-Springs Signature OptiTracing light projects a

Signature OptiTracing light projects a 360° glowing halo for all-around safety

Helmet Holder not included

What do you need

Key Features and Benefits

Magnetic lens anchor attachment

Ethirteen Helix Sram XD Cassette 12s 13-52 S3-Cat-EXTRacingShox-Springs Signature OptiTracing light projects ae*thirteen Helix Race Cassette 12 speed 13 52T Bronze A close ratio cassette specifically for e bikes. Enter the Helix Race 13 52T a new 12 speed close ratio cassette, specifically engineered for steep terrain where climbing speeds are high, and descents are gravity powered. The 13T, in combination with a 32T chainring, at 85rpm cadence, will deliver speeds at or just above 32kmph 20mph, which is just beyond the speed limited assistance of most e