This is a replacement Tekno RC Rear Hub Set. This is an updated version of the original TKR5540. It features a larger outer bearing recess for use with TKRBB06135 6x13x5mm bearings. The bearings increase durability in all conditions.

These are compatible with the original SCT410 but require TKR5530 or TKR5530B rear suspension arms along with the larger outer bearings. The stock 10x15x4mm inner bearings are used.