Piston YAMAHA RD-44,00 SEE TW

Piston for a YAMAHA RD engine, 44,00 mm in diameter. The photo marks five dimensions, and the first two to use when choosing are the diameter and the pin bore.

• The piston is replaced together with the rings when the cylinder is replaced or after it has been reground: once worn, it loses its seal, compression drops, a knocking noise appears in a cold engine and oil consumption rises
• What "SEE TW" at the end of the name means, the maker did not write, and we do not guess — the same marking stands next to other items in this list
• The photo marks: diameter 44 mm, from the crown to the pin axis 20 mm, overall height 49 mm, pin diameter 12 mm, pin length 34 mm
• The photo shows a kit: piston, gudgeon pin, two compression rings, one thin ring and two circlips
• The photo in this listing is shared by three YAMAHA listings — 40,00, 44,00 and 47,00 — and differs between them only in the numbers written on it; the piston itself was photographed alone, so we do not describe its appearance from it
• The photo itself has no scale reference: no ruler, no object placed for comparison. Only the numbers listed in the notes give the size, so measure your cylinder bore
• If the piston is still sound and only the compression is dropping, rings alone may be enough: rings of the same 44,00 mm diameter are in the catalogue — "Piston ring set GY6 4T 60cc 44,00mm" — but that is a set from the different GY6 4T line; whether it fits your engine, the maker did not write — write us your model, we will check
• You will recognise a worn piston by a rubbed-through side, too large a gap in the rings and imprinted marks around the gudgeon pin bore; the rings are always replaced together with the piston
• Supplier code MC 05186 — state it again when ordering

To be straight with you: which exact model and which years it fits, 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 callipers: we will check it before you order.

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