Product Description This Better Boost adapter kit by MRP is the link between your Non-Boost wheel with DT Swiss 240s Center Lock hub and your Boost fork. Unlike other conversion kits, the hub does not have to be re-centered, because the kit includes an adapter for the brake caliper in addition to the end caps. Specifications:Convertible to: 15 x 110 mm thru-axleBase Model: 15 x 100 mm thru-axleCompatibility:Hub: 240s Center Lock (not compatible with 240s OS) Brake Rotor: Since it is not possible to move the rotor attachment further outwards on a centerlock hub, this brake caliper adapter moves the brake caliper 5 mm inwards. This will give you the boost axle distance, but keep the standard rotor distance. For this, however, the brake rotor must be one size larger than the one for the standard brake caliper holder: For a fork with 6" postmount mounting you need a 180 mm brake rotor instead of a 160 mm brake rotor. For a fork with 7" postmount mounting you need a 203 mm brake rotor instead of a 180 mm brake rotor. Manufacturer Number:WB-17-5201-CL Contents:2 x MRP end caps for DT Swiss 240s Center Lock1 x MRP brake caliper adapter Manufacturer: MRP 580 N. Westgate Dr. Grand Junction CO 81505 USA info@mrpbike.com Distributor: everyday26 Siedlerstr. 22 84109 Wörth Germany info@everyday26.de