Check the listing for details. BOTTEMA Threadless Chromoly BMX Bike Fork 1-1/8" 26" or 29". Color: Silver, Condition: New. Listed at 116.00 USD. Bottema 1 1/8" Threadless Fork When Jeff Bottema designed the original Bottema forks in 1978, he chose thicker tubing and longer leg tubes to eliminate unwanted flex. Then, he and Raleigh teammate Toby Henderson tested them to make sure they suited the needs of professional racers. The forks were an instant success and over the decades achieved legend status. Working with Jeff and Toby, American BMX Company updated the forks with modern dimensions like 1 1/8” threadless steerer tubes, oversize 1 1/8” legs and 4mm thick, laser-cut dropouts to fit 26”and 29” wheels, while retaining the original design language. Bottema forks are built by Tange from 100% 4130-chromoly tubing and feature an innovative dropout and dropout-saver design that works equally well with 10 and 20mm hub axles.(10mm Dropout adapter included) Features: 4mm Thick Laser-cut Dropouts fit 20mm Axles Built from 100% 4130 Chromoly Tubing Oversized 1-1/8" Legs Built by Tange 10mm Dropout adapter included