Let's face it, Velokraft makes the most beautiful lowracers in the world. That's why it only makes sense to use T-Cycle's Velokraft Idler Kit. And that's why this kit only comes with either an Elite Over/Under or an Elite Power and Return idler. Nobody comes up with more functional and durable ways of handling your chainline than T-Cycle. This kit is so good, most Velokraft bikes in the US come stock with it. If you're unsure of your X-Seam size, then the kit built for less than 43" seams fits all bikes. Once you see the kit, you'll know that these are the only parts meant for this bike.