Tomei complete engine kits contain everything you need to bump the displacement of your engine while adding some additional strength to the engine internals. Included in every kit are Tomei's famous Forged Pistons, Forged H-Beam Connecting Rods, and their Forged Full-Counter Crankshaft.All the engine internals are brought to static temperature (20 degrees Celcius) and blueprinted with 0.040~0.060mm clearance bearings. This eliminates the measureing and blueprinting process for the customer, so the kit can be installed with less hassle.Specifications: Application: Subaru EJ207 / EJ205 Bore: 92.5mm Stroke: 79mm Displacement: 2123ccCompetition BearingsWhen tuning engines for higher horsepower output and high RPM, the bearings are subjected to extreme load conditions. These harsh conditions require the bearings to be able to cope with excessive loads and stress conditions.The Tomei Competition Bearing Series are designed for fatigue resistance, durability, effective lubrication and resistance to scoring. Designed for use on engines that will be producing 1,000 HP and at over 10,000 RPM. These advanced designed bearings are suitable for the serious professionals in mind who need results.Tomei includes their competition bearing products with all of their engine kits.