This is a new PRO-X Piston Kit. STANDARD Fits the cylinder bore 54.00mm.  New piston kit, old stock.
 A qualified machine shop is required to measure your cylinder for proper clearance and wear.
Check your bore size before purchasing. Helpful hint: When in doubt about the size needed, order one size larger, you can always bore the cylinder to fit. 
Fits: SUZUKI RM-125 1989,  2-Stroke.  Here is a list of more piston sizes available to purchase:
  • Standard bore size 54mm
  • 1st oversize bore +.010" 54.25mm
  • 2nd oversize bore +.020" 54.50mm
  • 3rd oversize bore +.030" 54.75mm
  • 4th oversize bore +.040" 55.00mm
  • 6th oversize bore +.060" 55.50mm  

Year and Model are important, check yours before purchasing.  This 1989 year model RM-125 is a domed top piston. 
Re-stock fee applies to returns for refund. 

The kit is supplied with piston, single ring and clips and pin.
Keep your vintage RM-125 running with this piston kit.

You will receive 1 each piston kit when you order.

Note : Picture is not exact model, you will receive correct kit when ordering.