{"product_id":"triumph-500-650-750-twins-aerco-cylinder-barrels-new-uk-made","title":"Triumph 500 650 750 Twins Aerco Cylinder Barrels New UK Made","description":"Are your existing cylinders beyond boring? Chipped fins? No reliable machine shop near you to perform a rebore? Start fresh with these new UK made cylinders from Aerco. Manufactured to original specs and standard bore, these cylinder barrels are nicely finished with gloss black paint and ready to install on your unit Triumph twins. 500 - PN# 70-4000 E4000 70-9719 E9719 8 stud 69mm bore 1958-74* 650 - PN# 70-6304 E6304 (also replaces PN# 70-4546 E4546) 9 Stud 71mm bore 1963-72** 750 - PN# 71-4005 E14005 10 Stud 76mm bore 1973-82*** *note - some 500 barrels were supplied in silver paint, these cylinders are available only painted black **note - early 650 barrels did not have the oil feed to exhaust tappets, this barrel will replace the early cylinders but do have the oil feed, as such they are not 100% correct for 1963-66 twins ***note - early 750 twins were originally 75mm bore size, these cylinders are a direct bolt on to early crankcases but require 76mm pistons available below We offer cylinders for Triumph unit 500, 650 and 750, select your size when placing your order. Click here for early Triumph 500 squish band pistons 1958-66 Click here for late Triumph 500 non-squish band pistons 1967 onward Click here for Triumph 650 pistons Click here for Triumph 750 pistons","brand":"Trophy Classic Cycles","offers":[{"title":"Unit 500 T100","offer_id":43223810441279,"sku":"TCC-70-4000","price":489.5,"currency_code":"USD","in_stock":false},{"title":"Unit 750 TR7 T140","offer_id":43223810474047,"sku":"TCC-71-4005","price":467.5,"currency_code":"USD","in_stock":true},{"title":"Unit 650 TR6 6T T120","offer_id":43223810506815,"sku":"TCC-70-6304","price":467.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0661\/0350\/9055\/files\/70-6304_2520Triumph_2520650_2520Cylinder_2520Barrel_252001.jpg?v=1778175269","url":"https:\/\/www.trophyclassiccycles.com\/products\/triumph-500-650-750-twins-aerco-cylinder-barrels-new-uk-made","provider":"Trophy Classic Cycles","version":"1.0","type":"link"}