Standard size, great core to build or rebuild. very minimal scoring almost nothing, can be reused but machine shop always recommends 5mm bore, if i wanted to rebuild, i would go std size with this. Pick up in miami gardens, near Harley Davidson in NW 2nd ave. for customer service you can refer to our contact information in our store front. handling time is 5-10 business days, however, most items are shipped within 2-3 business days, please be patient if your item does not get shipped right away, also, by making the purchase, you acknowledge and agree to these terms Shipping listed is within Continental United States, other US territories and International shipping available upon request. email us a message with full address for a shipping estimate. We do not manufacture any items, please be aware that we assume no liability on quality, performance or durability, also, for fitment, please verify and make sure of compability prior purchasing or making an offer as all sales are final with no returns, but communication is highly encourage should any issue occur.