1985-1999 Polaris Trail Boss 250 Top End Rebuild Kit Includes Piston Gaskets Wrist Pin Bearing Standard Stock Bore 72mm

Good quality kit. I rebuilt my 1986 polaris trail boss 250 with this kit and new crank seals, and it's running like new. Others have stated it was the wrong size, but that isn't the case. This is the stock size. Engines that have excessive wear get over bored and need a slightly larger piston. If you don't have your bikes maintenance records, you need to measure the cylinder before ordering a new piston.

Nice set good quality will purchase again

Did not fit my 94 Trail Boss. Gap between rings too great, low compression and wouldn't run. Disappointed and will avoid the seller in the future on account of inaccurate product description.

worked perfect

Got exactly what I ordered.

Included all gaskets for a top end rebuild. All parts high quality. Will buy from this seller again!!

Was used to replace piston of 1986 trail boss. Awesome, great quality, works really well.