PRO-X POLARIS SNOWMOBILE INDY 650 PISTON KIT OVERSIZE +.070" 69.50MM. 

READ THIS BEFORE PURCHASING :

BUYER TIPS ON PURCHASING THE CORRECT PISTON SIZE.
To determine which piston size you require there is a very important first step. Always measure your cylinder bore size first. This is only size that matters! Two-Stroke pistons are listed by size to FIT the cylinder bore size. Measuring pistons to determine what to purchase will most likely cause you to purchase an incorrect piston to fit the cylinder bore. 
Two-Stroke pistons are manufactured with a cam shape. They are never straight and round. Measure a 2-stroke piston at the bottom of the piston skirt, ninety degrees from the wrist pin hole. This measurement only is used determine piston to bore clearance. Do not try to match a size from a used piston. This will always produce a faulty measurement. Used pistons wear out and change shape. 
Buyer Tip: Before purchasing, remove your cylinder to be inspected and measure for bore size. If boring is required for your cylinder, purchase a piston at least two sizes larger than the measured size to allow clean-up and honing to the new piston size.

This single piston kit is manufactured by Pro-X. These are quality made cast pistons and are supplied with the rings, clips and wrist pins.

The pistons are for 69.50mm bore size.   Fits Models: Indy 650 1988-93,  Indy 650 RXL 1991-97,  Indy 650 SKS 1991-97

IMPORTANT BUYER TIP: Before Ordering - Check your cylinder bores for the actual sizes. Determine if you will need to bore the cylinders to the next size. If your cylinders need to be bored, purchase pistons at least two sizes larger than the measured cylinder bore size to allow clean-up and honing. Have a qualified machine shop or cylinder tech inspect your cylinders and install the pistons.

**Here are MORE sizes available to purchase:


  • 1st oversize +.010"  68.00mm
  • 3rd oversize +.030"  68.50mm
  • 4th oversize +.040"  68.75mm
  • 5th oversize +.050"  69.00mm
  • 6th oversize +.060"  69.25mm
  • 7th oversize +.070"  69.50mm
  • 8th oversize +.080"  69.75mm
Picture is the exact model listed. You will receive 1 Polaris piston kit when you order. Order multiple quantity if required.