This is a complete set of 4 high performance rod bearings for the Toyota 2ZZ-GE, -0.25mm size (intended for a crankshaft that has been refinished 0.25mm smaller.) They are a tri-metal material and are a dramatic improvement over the stock bearings. They are also treated with a special anti-friction coating for long life and resistance to damage from loss of oil pressure or other oil problems. If you're building an engine for high RPM use, nitrous, or turbo/supercharger boost then these bearings are for you.
ALWAYS take all critical measurements and calculate clearances before beginning assembly of your engine. The clearances are absolutely critical to engine operation and aftermarket parts do not always have exactly the same dimensions as OEM parts. Monkeywrench Racing cannot accept the return of any bearings that show ANY evidence of having been installed.