Can only really think of the Rockshox one for 12x100mm.
https://r2-bike.com/ROCK-SHOX-Thru-Axle-Maxle-Ultimate-12-x-100-mm-ROAD
https://www.bike24.com/p2135572.html
http://www.chainreactioncycles.com/rockshox-maxle-ultimate-front/rp-prod136298?gs=1&gclid=COPUofWu384CFWgq0wodUnkE7Q&gclsrc=aw.ds
Expensive, but it is a well-proven design.
This would be better looking on a road/cross type frame, but I'm guessing you'd want tool-free operation for racing?
https://www.bike24.com/1.php?content=8;product=139609;menu=1000,4,171;page=5
https://r2-bike.com/ROCK-SHOX-Thru-Axle-Maxle-Stealth-Road-QR12-12-x-100-mm
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Can only really think of the Rockshox one for 12x100mm.
https://r2-bike.com/ROCK-SHOX-Thru-Axle-Maxle-Ultimate-12-x-100-mm-ROAD
https://www.bike24.com/p2135572.html
http://www.chainreactioncycles.com/rockshox-maxle-ultimate-front/rp-prod136298?gs=1&gclid=COPUofWu384CFWgq0wodUnkE7Q&gclsrc=aw.ds
Expensive, but it is a well-proven design.
This would be better looking on a road/cross type frame, but I'm guessing you'd want tool-free operation for racing?
https://www.bike24.com/1.php?content=8;product=139609;menu=1000,4,171;page=5
https://r2-bike.com/ROCK-SHOX-Thru-Axle-Maxle-Stealth-Road-QR12-12-x-100-mm