Here’s a look at product from M2C Racing. These 17mm adaptors are made specifically for the Losi SCTE and will convert your SCT to accept 17mm wheels. Although not ROAR legal to run 1/8th scale wheels, it is a great add on to be able to run some extra tires/wheels that you have laying around the shop.
Here’s where I got them, and some info from M2C Racing:
https://m2cracing.com/product.sc?productId=520&categoryId=57
17MM HEX ADAPTORS FITS 6MM AXLES FROM .kIT INCLUDES (4) 17MM NUTS AND (4) 17MM HEX ADAPTORS AND (4) RETAINER NUTS
THIS IS A DIRECT BOLT ON SYSTEM . USES THE STOCK PIN . THE NUTS ARE A SURE LOCK DESIGN THAT WILL GREATLY REDUCE THE CHANCE OF THE NUT BACKING OFF. ANODIZED BLACK
Custom Machine & Tool Co., Inc. is a US manufacturer of timing pulleys, drive systems and components for the motion control and power transmission markets in operation since 1964.
CMT has developed and patented (US patent #6,568,063) a new and revolutionary hub to shaft
connection device, which allows for precise component positioning and tight runout control on demanding applications. At the same time it is easy to install and remove, and is economical to manufacture. Our keyless hub to shaft connection device has superior features and benefits compared to other connection systems such as keyways, pins, set screws, clamp collars, and other tapered shaft locking devices.
The new system, called Concentric Maxi Torque, is available for immediate inclusion in our full offering of timing belt pulleys and can be designed into any custom application. We are confident that you will
not find another hub to shaft locking connection system device or system that provides a better solution to your motion control and power transmission shaft attachment requirements.