Piston with rings 65,75mm CB250 15mm pin

Piston with rings for a CB250 engine, 65,75 mm diameter, 15 mm pin. Three photos, and each shows its own part.

• Piston with rings is replaced together with the cylinder or after it is honed: once worn, it loses its seal, compression drops, a knock appears in a cold engine and oil consumption rises
• The second photo marks: diameter 65.75 mm, overall height 42.50 mm and the pin bore in the piston 15 mm
• The third photo measures the pin itself: length 47.25 mm, and 10 mm is marked at its inner bore – this is not the pin's thickness but a hollow through it
• The first photo shows the set: piston, pin, four rings with a copper-coloured shiny expander and two circlips
• The photo itself has no scale: no ruler, no object placed for comparison. Only the numbers in the captions give the size, so measure your own cylinder bore
• If the piston is still sound and only compression is dropping, the rings alone may be enough – but there are no separate 65,75 mm rings in the list; write us your model and cylinder bore, we will tell you what we have
• A worn piston is recognised by a rubbed-out side, excess play in the rings and marks pressed in around the pin bore; the rings are always replaced together with the piston

To be straight with you: which specific model and which years it is for, the maker did not write, and we do not guess – write us your model and year. Before ordering, measure your cylinder bore and the diameter of the old pin – or send a photo with a caliper: we will check it before you order.

24-month warranty · tel. +370 685 777 56