e*thirteen Helix Race Cassette - 12-Speed 13-52t Gray Model-SID SL Ultimate Flight Attendant 5 Steerer Tube Material Aluminum

5 Steerer Tube Material Aluminum Maximum Rotor Size 220mm Travel 160mm Axle/Hub spacing 15x110mm TA Maximum Tire Width 81mm Primary Color Black Rake 44mm Spring Adjustments Air pressure Bottomless tokens Spring Type DebonAir+ W/ButterCups Damping Adjustments External begin stroke rebound low speed compression high speed compression Crown Material Aluminum Wheel Diameter 29 Brake Type Disc Stanchions Diameter 38mm Stanchions Material Aluminum

Model Lumina Micro 1150 Headlight Lumens 1150 Modes 5 Rechargeable Yes Color Black Weight 130g

4 Tire PSI 50 TPI 67TPI Tire Weight 1220g Tubeless Technology Tubeless Easy Primary Color Bronze Bead Folding e-Bike approved Yes Labeled Size 27

and a full metal edge for security on hardpack and ice

e*thirteen Helix Race Cassette - 12-Speed 13-52t Gray Model-SID SL Ultimate Flight Attendant 5 Steerer Tube Material AluminumThe e*thirteen Helix Race 12 speed 13 52t cassette features close ratio gearing specifically engineered for steep terrain where climbing time and shift frequency is high and descents are gravity driven. By placing more gears where riders spend the majority of the time they can optimize cadence and torque for improved climbing efficiency with smoother shifts under load for both analog and eBikes. Close ratio gearing cassette for improved shifts under