The Wiseco forged pistons are precision engineered to deliver quiet
It was apparent early on that an OEM-style spring with a bit more pressure was not going to be the complete answer for these engines
Need To Be Reamed At Install
OEM Compatibility: Replaces Polaris OEM part number 0450258
BPRATV YZ250 Stock Cylinder Head Kit Titanium Head Studs Acorn Nuts Rebuild Kit Ducati The Wiseco forged pistons are5MW 11111 02 00, 5MW 11111 00 00, 5UP 11111 00 00, 90116 08027 00, 90176 08005 00,90201 080L8 00,93211 02703 00, C7855, C3592, 93210 74316 00,810670,P400485160183,CH2001 K01, CH2001 K02 BPRATV YZ250 Stock Bore Cylinder Head with Titanium Stud Kit, Acorn Cap Nuts, Copper Sealing Washers, & Head O Ring Kit! The Best & Most Affordable New YZ250 Cylinder Head Replacement Kit & Install Kit at THE BEST PRICE! Everything you need for a quick and easy