Mitsubishi EVOX 4B11 forged piston and ring set; OK for use in turbo and nitrous engines. 3.406 (86.5mm) bore 3.386 stroke 5.656 rod 1.312 compression height; top ring groove 1.0mm; 2nd ring groove 1.2mm; oil ring groove 2.8mm; Dish -4.4cc; weight 345 grams; high strength forged piston and ring set for use in high performance and racing engines. 9.1-1 compression ratio with 50.5cc head; Set includes pistons; piston rings; locks and wrist pins. Part number Ross 80181
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