The Lightning frame is one of the lightest - if not the lightest - steel single-speed/fixed-gear frames out there at under 5 pounds (55cm). It features a triple-butted Columbus Spirit frame and a paint-matched carbon fork that delivers a light, responsive ride. The Lightning features our Wabi hybrid track-road frame geometry - designed to be nimble for quick dashes through the city or comfortable for long rides on the backroads. The latest colors are Summit Blue, a medium solid blue, and Crystal Grey, a dark pearlized grey. We also have some remaining stock of Pearl Black, a dark pearlescent black, and Sunlit Silver, a brilliant silver. TECH SPECS Frame: TIG-welded Columbus Spirit triple-butted, heat-treated oversized tubing. Fork: Carbon fork with 1-1/8" aluminum steerer tube, painted to match the frame. Headset: Wabi Pro 1-1/8" threadless sealed-bearing headset. Bottom Bracket Compatibility: 68mm English-standard bottom brackets. Dropout Spacing: 100mm front; 120mm rear. Seatpost Compatibility: 27.2mm. Tire Compatibility: Up to 28mm. Actual clearance may vary depending on wheel rim width and tire model. Weight: 4.8 lbs for frame and fork (55cm). Eyelet Note: There are no fork, dropout, or stay eyelets on this frame. Chainstay Note: The drive-side chainstay has an indented design on the exterior side to ensure clearance for crankarm spiders and chainrings. SIZING We highly recommend reviewing our sizing page before purchasing. Look at both your height and your actual inseam/standover height. The guide below also provides some general guidelines. Rider Height Frame Size Standover Height 5'4" - 5'7" 49 CM 30.2 IN 5'7" - 5'10" 52 CM 31.3 IN 5'10" - 6'1" 55 CM 32.5 IN 6'1" - 6'3" 58 CM 33.6 IN 6'3" - 6'6" 60 CM 34.8 IN Frame size is measured center-to-center of the seat tube. See more on our sizing page. COMPONENT SIZING Our frames are designed around a 170mm crank arm length, a 24mm setback seatpost, and varying stem lengths based on frame size and rider height. You can find our stem length recommendations under the “Determining Bike Components Fit” section on the sizing page. Choosing different components may affect the fit. IMPORTANT NOTE ON COMPATIBILITY We cannot guarantee the fit of any specific component set other than the ones we sell with our complete bikes. If you are planning a specific build, please contact us to see if we are aware of any compatibility issues. Even so, we are unable to offer refunds based on incompatibility with third-party components.
