Serfas Thunderbolt 2.0 Front Light Fwheelsize_29" Chain runs through the rear

Chain runs through the rear derailleur smoother and quieter than ever before

45lb capacity

It is proven to seal large punctures up to 1/4" and perform under varying temperatures and altitudes

this light will get you through the morning commute with ease

Caliper Fit = 74mm PM

Serfas Thunderbolt 2.0 Front Light Fwheelsize_29" Chain runs through the rearSerfas Thunderbolt 2. 0 Front Light The Serfas True Series light line was developed to be the best on the market. Given the True stamp of approval, these headlights will meet and exceed their expected lumen output while offering you all the features youve come to enjoy from Serfas lighting. Please welcome the new line of True Series lights, and be prepared to turn night into day.