Narrow the track width of your Trophy Truggy with these optional 5mm hex adapters. Narrowing the width can help fine-tune the handling balance of your buggy. These are the stock hex adapters for the Trophy Buggy. Can also be used to upgrade the Trophy Truggy to 17mm hex adapters! Use these parts in combination to upgrade the driveshafts to universal dogbones and change the threaded axles to 17mm hexes! #66479 Universal Joint #101061 Rear Wheel Axle 2 x #101785 or #101792 Wheel Hex Adapter With these parts you will be able to use standard truggy wheels on your Trophy Truggy!