EJ25 MJL PERFORMANCE 1000 rated closed deck shortblock

All closed deck blocks sold at MJL performance will be machined by ZFDESIGN. Featuring 1 piece solid billet inserts, 16 pinned mains, and case bolts. And assembled in house at MJL performance to our specifications. These blocks will be built in order received and can have upwards of 4-8 week build time. 

1000x shortblock features

forged nitrated crank

Italian to gold forged pistons 99.75mm

manley tri beam forged rods 

acl race bearings

The 1000x shortblock comes with headstuds provided, 1/2 upgrades with block reinforcements. 

Firelock headgaskets zfd recommended