Hi all, just received some taper roller bearings today which are the right size( bore25mm dia 45mm width thickness 12mm)got these off pyramid parts adverting in classic dirt bike . (WWW.PYRAMID-PARTS.COM) TEL 01387 269985 (

well done so much better than the balls. No 51 on the dabster list of good mods to the 340

Hi Dabster,wots the other 50 mods then,was going to contact you ,asked a question recently about 340 mods, big john said your the man for the job.Im part way through a bit of a rebuild , im also after a piston, i need to rebore it, my current piston says t2+ on it ,is that second oversize ?.Any info would be gratefull .CHEERS

Were they ground to the correct size?

Hi swooshdave , rang pyramid yesterday , and they said no problem they stock that size bearing .I received it today, nice solid bearing with the sizes stamped on it .I think they produce the product .

mail me on hols till next week but will send list then, dave renham is the one for technical stuff at bultaco uk.

mail me on hols till next week but will send list then, dave renham is the one for technical stuff at bultaco uk.

Is there a manufacturer or part number on it?

hi again swooshdave ,no part number just the bearing size.