Hey All I got a tip from Cameron that there is now an after market option for GPX250 and ZZR250 mufflers, Blurb from John yes we have not long developed a twin stubby muffler kit which fits both the GPX and ZZR 250's. These mufflers are 30 cm long by 85 mm wide rounds - are made from anodized alloy with stainless end caps. Colors avial just now is black only, but later will be silver/red/gold. They have 2 x black painted steel link pipes with all mounting harware. Pricing is $240 per set, plus $18 for registered post anywhere in OZ contact John if your interested - jrenehan2001@hotmail.com Cheers Chris