No.96641 helps you to convert your Drfit ART to a very wide track,so your chassis will be very easy to fit the extra wide car bodys.But you still need to buy No.97511(Rear Arms Long Plates) or 98311(EX-arm,the metal rear arms).
It contains the following parts:
L Turnbuckle 16mm x2 pcs
L-B Turnbuckle 16mm x2 pcs
XL-B Turnbuckle 20mm x2 pcs
Wide body D-axis x2 pcs
DA4 Dogbone Extensions x2 pcs