AMC 401 pistons hypereutectic step dish piston and ring set.
Standard bore size 4.165 | stock 3.680 stroke | 5.858 rod | compression 9.8-1 with 58cc head or 10.5-1 with 51cc head | 1.510 compression height | 1.000 stock size wrist pin | top ring groove 5/64; 2nd ring groove 5/64; oil ring groove 3/16 | Step Dish 28cc with 2 valve reliefs | piston weight 502 grams and wrist pin weight 157 grams
Can be used with stock press pin rods or aftermarket floating pin rods.
High strength hypereutectic piston set for use in stock and high performance engines. Set includes 8 pistons 8 wrist pins piston rings and lock rings. Part number KB419KTM
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