RX28SE 102 Conversion Kit [Reflex Racing] RX28SE-12

Included are the necessary items to a 102mm wheel base.  The extended length allows you to mount 102mm LM style bodies and also run a longer car in classes like the 28SRA's Pan Car Class.  The added length adds much more stability to the car at the expense of a slight bit of steering and rotation.  

***When used with Kyosho 102mm White Bodies, the clips need to be moved 2mm forward, just like with 98mm bodies.  This is different from the flat plate 102mm conversion kit, where the clips had to be moved back 2mm.

Directions here:  RX28SE-12 Manual