You can order the wing kit from Sig, should fit the ARF ok.

The balsa wing kit from SIG is:

<br type=''_moz''/><table bgcolor=''#20548a'' border=''0'' cellpadding=''2'' cellspacing=''1'' width=''605''><tr><td bgcolor=''#ffffff'' valign=''top''><font color=''#414141'' face=''Verdana'' size=''1''>SIGRPBK258<input name=''dp_prod4'' value=''SIGRPBK258'' type=''hidden''/></font></td><td bgcolor=''#ffffff'' valign=''top''><font color=''#414141'' face=''Verdana'' size=''1''>BALSA WING KIT- KADET SENIOR<input name=''dp_desc4'' value=''BALSA WING KIT- KADET SENIOR'' type=''hidden''/></font></td><td align=''left'' bgcolor=''#ffffff'' valign=''top''><font color=''#414141'' face=''Verdana'' size=''1''> EACH<input name=''dp_um4'' value=''EACH'' type=''hidden''/></font></td><td colspan=''2'' align=''right'' bgcolor=''#ffffff'' valign=''top''><font color=''#414141'' face=''Verdana'' size=''1''>$36.99</font></td></tr></table>