Hub Conversion Kit Adapter For DT SWISS 240/350/370/X1501/1600/1700/1800/1900 Bicycle Hub Wheel Conversion Seat Bike Component - AliExpress
DT Swiss DT Swiss 10mm Thru Bolt conversion end caps for 9/10 speed Rear Hubs: Fits 240, 240 SS, 350 and 440 - Barker Mountain Bikes
DT Swiss DT Swiss XD End Caps for 135mm x 12mm Thru Axle hubs: fits 240, 350, 440 - Just Riding Along Cycles - Boston Area Bicycle Dealer - New England - MTB, Road, Gravel, Hybrid Bikes