YZ250 2003-2024 HOTRODS WISECO Complete Top & Bottom Rebuild Kit Piston Crank

  
Above factory standard complete rebuild, direct bolt in, no mods required. Top and Bottom end kits with gasket and oil seals. Wiseco Piston Kit: Forged Piston, Pin, Rings, C-clips.

Bore - Standard: 66.40mm. Bore - Actual: 66.40mm. Bott om End : HotRods CBK0135, Kit contains a new crank assembly. Complete top and bottom gaskets including oil seals kit.

HotRods is the only kit that comes with the oil seals, the most complete gasket kit on the market. Each kit contains everything you need to complete your rebuild the right way, the first time- crankshaft and connecting rod, all applicable bearings, and complete bottom end gasket and OIL SEALS kit made to meet or exceed OEM. HotRods connecting rods are double forged from a dedicated forging and feature shot peening, oil slots, and coated bronze thrust washers.

Bottom end gasket kits are made from premium materials, exceeding OEM standards, to provide exceptional seal between critical mating surfaces. Main bearings are manufactured to the highest quality standards. Each is case hardened for maximum life and smooth operation at high RPM's. Corrosion resistant surface treatment to prevent corrosion and pitting over long term use or storage.

This will add to the life as well the strength of the assembly. Top end of rod is bushed for oil retention and eliminates pin galling. The bottom end rod bores are case hardened to 58-62 RC to optimize bearing running surface.

The crank pin bearings are manufactured from the highest quality, hot rolled steel case hardened to 58-62 RC to extend the lifetime of the assembly. Caged needle roller bearings to provide the highest possible RPM. Winderosa Complete Gasket Set: These sets include all gaskets and oil seals necessary to rebuild the engine and transmission. Including output shaft, water pump, clutch, shift and starter seals. These sets include all oil seals necessary to rebuild the engine and transmission including crankshaft, output shaft water pump, clutch, shaft and starter seals. Some items may have a slightly different appearance than what is shown in the picture. Please review the entire description to verify proper fitment.