aussie

just wondering if anyone has tried out one these shift kits?? http://www.ebay.com.au/itm/JACKSHAFT-SHIFT-KIT-GEAR-KIT-SHIFTKIT-JACK-SHAFT-FOR-BICYCLE-ENGINE-KIT-MOTOR-/190772632698?pt=AU_Motorcycle_Parts_Accessories&hash=item2c6aef5c7a&_uhb=1#ht_4978wt_1271 its a bit cheaper than the one...