Hot Rods K228 Main Bearing and Seal Kit - Complete Engine Rebuild Kit for Dirt Bikes & ATVs - Perfect for Honda CRF250R, CRF450R, Yamaha YZ250F, YZ450F - High Performance Motorcycle Engine Repair & Maintenance

Features

Main bearings and seals to accommodate crankshaft installation

Can be used with Hot Rods or OEM crankshafts

Some models do not require seals

Some models include only one bearing; Some bearings come pre-installed onto crankshaft