The baseball stamp on a frame means it's GOOD quality Japanese 1980's product & I'm pretty sure Koizumi did not just limit their production of things to BMX frames either, it was/is a _big_ manufacturing facility.
The name of the Japanese 'baseball stamp' company is Koizumi Looks like Koizumi also made the KZ-1 Kuwahara frame as well as Diamond Backs & weird looking 26inch cruisers like our one, plus plenty of other brands at one time or another. This is the 26 inch cruiser frame & forks before it got all cleaned up & re assembled, Baseball stamp & all. We bought a complete 26 inch cruiser around 1981 with a baseball stamp + local brand name stickers on it, it only needed a set of Kos cruiser bars fitted on to turn it & it was ready to go.Matt has some pix of it somewhere. (forgot the name of it) factory in Japan, got chrome plated and then exported out to the rest of the world to get all sorts of different brand stickers put onto them.
Look for the 'basebaball stamp' near the serial number, this will tell you if it is a Japanese made frame vs Taiwanese. I'll weigh the Cook Bros again when I have it over here again. It feels heavier than the Cook Bros, but the Cook Bros scaled out pretty close to the same, if I remember right, which surprised me. I weighed it on the mail scale and it is just a hair over 4 lbs stripped, except for the headset and bottom bracket cups that are still in it. Is that true? Is this frame chrome-moly, and what year is it? Is the plating chrome or nickel? Someone told me if it has the washer on the brake bridge, it's a Silver Streak and the Med Pro's didn't have the washer. I put in the last 2 x's in place of the numbers.
The serial number is on the inside of the left dropout and it is- '2X02xx'. The welds are beautiful, tight little TIG welds, pretty close in quality to the ones on my Cook Bros. The frame also has a thick 'washer' welded on top of the brake bridge where the brake caliper mounts to. The dropouts are 1/8' thick, about twice as thick as the ones on my Cook Bros. Hi guys, I finally got the info to identify this frame, I think. Thanks for your help!Īlso, what kinda forks are supposed to go on this and what do they look like?. Not sure about that but thought I would throw that in. Sort of diamondback BMX this is? Serial number is KW9J08573. There are no chain gaurd tabs and the welds are nice, so I assume this is not a cheapo dept store model. The brake bridge is a curved round tube the same diameter as the rest of the tailsection tubing. The head tube and bottom bracket shell are straight/smooth (no outside machining like you see on Cook Bros frames).
The shape of the dropouts look alot like Cook Bros dropouts and are a little thicker than Cook's. There is a rounded-corner rectangular tube between the bottom bracket shell and the chainstay loop that has a hole thru the top of it. It has an American size bottom bracket shell. The gussets have the diamond shape hole in them and 3 welds along the top tube and 3 along the down tube and one along the head tube, with open corners. The double front gussets are the large size. Anyways, maybe you DB experts can help! The finish is either chrome or nickel plated, not sure yet which. I got this DB cause it looks alot like a Cook Bros. I don't know a whole lot about DB's other than they were really cool when I was young. Hey guys, I have this Diamond Back frame that I'd like to know the year and model of and if it's chrome-moly or mild steel.
If there is a problem with your item.Vintage Diamondback Bmx Serial Numbers Average ratng: 3,8/5 2882votes Please leave'5 Star' ratings for us- ebay considers a'4' below average. We like happy customers& value our high POSITIVE Feedback score. Please do not leave NEUTRAL or NEGATIVE feedback. We no longer use USPS First Class International for shipping due to the inavailability of insurance& tracking with this particular service.
We ship all international packages using USPS Priority Mail so that the package may be insured& tracked.
We will not falsify customs documents so be sure to know your country’s associated charges for your purchase before bidding or purchasing. INTERNATIONAL BUYERS: International buyers are responsible for(but not limited to) all tariffs. For sale is a beautiful diamondback viper old school bike in excellent survivor condition. Find great deals on eBay for Diamondback BMX in. Minor rust here and there and the bearings are stiff and crunchy.ĭiamondback Silver Streak? The serial number will not tell you if it is a Silver Streak or not, the Silver. Fork is stamped'A Pro' I'm not sure if this is a Diamondback but I'll bet some one out there knows. You know that serial number on the underside of your bottom bracket? Ok, so flip your bike over and take a look closely at the bottom bracket shell (the.īMX Frame Fork Crank Pedals Seat Bars Diamondback Goose Neck Frame is stamped on the drop out.