Manley 03-06 Evo 8/9 (7 Bolt 4G63T) 86mm +1mm Bore 9.0:1 Dish Pistons w/ Rings

This is a comprehensive description of a Manley Mitsubishi Rotating Assembly. It details the components included: crankshafts, connecting rods, pistons, rings, and bearings. CRANKS: Premium heat-treated forgings or lightweight 4340 billet; multi-step heat treatment process; nitrided for added strength; stress-relieved, shot-peened, and 100% magnafluxed; fully profiled knife-edged counterweights on the billet forgings. RODS: 4340 material forgings or aircraft quality 300M material for extreme boost; fully machined, heat-treated, stress-relieved, shot-peened, and 100% magnafluxed; big and small end bores are final honed to a tolerance of ± .0002"; bend and twist is tightly controlled; weight matched to +/- 1.5 grams. H-Beam comes standard with 3/8" ARP 2000 bolts. H-Plus comes standard with 3/8" ARP 625+ bolts. I-Beam and 300M come standard with 3/8" ARP 2000 bolts (affix an R6 suffix for ARP 625+ bolt upgrade). NOTE: "LW" signifies "Lightweight" design rod and "TT" signifies "Turbo Tuff" design rod. PISTONS: High strength 2618 alloy forgings; exacting ring groove squareness to cylinder wall provides maximum horsepower; offset wrist pin design; moly coated skirts. RINGS: 1.2 x 1.2 x 2.8mm 4G63/4G64; Total Seal steel tops standard; rings included in piston kits. BEARINGS: Premium ACL Race Series with narrowed rod bearings.