Remco Evenepoel just added another time trial world title to his palmars. The TT world is combing over the fit and setup of his rocket ship, the Specialized Shiv. Now, Specialized is offering riders access to one of the more interesting pieces of equipment behind his TT setup.(All Photos/Specialized)$20K Custom S-Works TT ExtensionsThe new S-Works Custom TT Extensions follow the same rider-specific development process Specialized used with Evenepoel. They combine Body Geometry fit data, 3D printing, wind-tunnel work, some skateboard griptape, and on-road testing.They wont turn you into Remco. However, you can totally feel like Remco when youre in the sticks, just dont expect his power numbers.How Are They Made?Specializeds approach starts with position. Instead of creating a single extension shape and some movable hardware, the custom setup is designed around the riders fit. Reach, stack, hand position, forearm support, and extension angle can all influence how compact and stable a rider can remain over the course of a time trial.Evenepoels TT position has become one of the more recognizable in the peloton. His hands are high and close together, and his forearms are tightly supported. The position keeps his upper body narrow and gives him a repeatable shape he can comfortably hold at speed. The extensions help make that possible.A Small Piece of a Very Fast SetupEvenepoels World Championship TT bike was hardly stock. His setup included a highly developed aero position, oversized gearing, race-specific wheels, and plenty of equipment choices aimed at one thing: finishing as quickly as possible. The custom extensions are a piece of that overall puzzle.The quickest extension for Remco probably isnt the quickest extension for you. Different arm lengths, shoulder widths, flexibility, torso proportions, and riding positions all change what makes sense at the front of a TT bike.That is exactly why Specialized sells these as a custom product.Now You Can Order Your OwnEvenepoels latest rainbow jersey is a good reminder of how much detail now goes into a top-level time trial setup. And now Specialized will build you a set, too.Ready? You can purchase them here.