Very Rare Now Obsolete New Old Stock Vintage Suzuki Part from the Crooks Suzuki Collection. NOS Suzuki RM250 +. Description: New Old Stock Genuine Suzuki RM250 +. 25mm Piston & Ring Set Bore Size is 70.25mm, Piston Pin Size is 18mm. May fits other models, check the photo for fitting. Now an OBSOLETE part. Grab Yourself a Bargain! Please note this special offer price is only valid “while stock is available”. Crooks Motorcycles Ltd t/a Crooks Suzuki 36-44 Crellin Street, Barrow-in-Furness, Cumbria, LA14 1DY, U.