The Curve bolt up axels are a minimal and secure approach to thru axels.
Make sure you keep them greased and give them a good squeeze (10nm) to secure them shut.
Rear Axle 12 x 142mm 1.5P
Suitable for Belgie, Belgie Disc, GXR and Uprock Frames
Front Axle 15 x 100mm 1.5P
Suitable for the CXR Fork