And at those attractive prices, one is even painted for you!
Here are some measurements I took from my XBR tank for reference;
Max length 640
Centre (front mounting) cups to centre rear mount hole 527
Centre cups to centre pet******* 230
Centre cups to rear of toptube where frame rails attach (and width goes from 65 to 75) 200
Centre cups to start of max width of 160 (outside seat rails) 360
Width of tunnel between cups 110
Diameter of top tube 65mm (CB200 cups had to be trimmed to gain clearance)
Height from cup centres to top of toptube 75
Max width 310
Worth reposting here what was included incidentally to my posted appeal for a CB250RS brake plate;
Joolz has a CX500 tank fitted and says it's an easy mod, needing only longer rubber mounts up front, or washers under the originals and a trim of the rear mounting tab. However, you then have to match the seat to the new tank face and you'll have lost the side panel mount that the XBR tank provides.
Here's a CB400N tank being used (same as 250N) but the builder doesn't describe how he did it, other than to say it needed a "soft" frame modification, which might mean no welding.
http://www.bikebound.com/2018/08/07/honda-xbr500-cafe-racer/GN250 tank here;
http://rhcc.pl/ajs-trial-replica/I nearly got my hands on a CB650 tank which looked like it might have nearly gone straight on. The CB750/900 tank is longer.
The SR500 tank also looked good, apart from tunnel widening and the gap left where the oil filler cap on the SR frame top tube is located by the headstock.
The GS400/425 was also good looking on measurements supplied by eBay sellers, having a 160mm tunnel to the rear of the tank which will clear the frame rails, but the pet******* might need repositioning and seat and side panel considerations remain. Also front mounting posts on the XBR will need cutting right down and the cups on the GS tank trimming to allow the tank to clear the XBR top tube.
