Ultra Series Piston Set By JE - 84.5mm +.50mm Oversize Bore | 9.5:1 CR | Stock Stroke 89.6mm - BMW N54

Ultra Series Piston Set By JE - 84.5mm +.50mm Oversize Bore | 9.5:1 CR | Stock Stroke 89.6mm - BMW N54NOTE: Image shown not actual parts. JEs Ultra Series pistons for sport compact and euro applications combine all of the best, most desirable piston features, such as thermal barrier crown coating, lateral gas ports, thick wall wrist pins, and a revolutionary new forging technology for the ultimate in strength. Premium, gas nitrided carbon steel rings are included. Bore (in) 3. 327 Bore (mm) 84. 5 Top Compression Ring Thickness 0. 0400 Second

NOTE: Image shown not actual parts.


JE’s Ultra Series pistons for sport compact and euro applications combine all of the best, most desirable piston features, such as thermal barrier crown coating, lateral gas ports, thick-wall wrist pins, and a revolutionary new forging technology for the ultimate in strength. Premium, gas-nitrided carbon steel rings are included.


Bore (in) 3.327
Bore (mm) 84.5
Top Compression Ring Thickness 0.0400
Second Compression Ring Thickness 0.0480
Oil Ring Thickness 0.111
Forging Type FSR
Volume (cc) -22.00
Series JE Ultra Series
Piston Head Type Inv Dome/Dish
Pin Diameter (IN) 0.866
Compression Height 1.244
Make BMW
Wrist Pin Style - floating or press fit Floating
Wall Type CHAMFERED
Wall Thickness (IN) 0.150
Ringset Part Number JG1001-3327
Ring Brand ProSeal
Ringset Included Yes
Retainer Thickness 0.063
Retainer Lock Style Wire Lock
Retainer Lock Part Number 866-063-MW
Retainer Diameter (IN) 0.866
Replacement Single Piston 367878S
Piston Pin Inside Diameter 0.566
Piston Pin Material 5115 LOW CARBON STEEL, CASE HARDENED
Piston Material 2618
Piston Pin Length (IN) 2.250
Piston Avg Wt 337
Pin Offset Yes
Pin Brand JE Pistons
Pin Part Number 866-2250-15-51C
Pin Included Yes
Pin Diameter (mm) 22.00
Oil Rail Support Included No
Deck Clearance 0.000
Brand JE Pistons


OE Part # 11-25-7-577-581 / 11 25 7 577 581 / 11257577581