Canister and header for 50cc and 100cc engine.

canister for 50cc,weight 222g(7.83 oz): $89 / each

head with Teflon Echaust Coupler for 50cc,weight 167g(5.9 oz):  $25 /each

pair of canisters for 100cc ,weight 444g(15.66 oz):  $179 / pair (two canisters)

pair of headers with Teflon Echaust Coupler for 100cc engine,weight 216g(7.62 oz):   $45 / pair (two headers)