SKU: 75950076577

Ultra Series Piston Set By JE - 84mm Standard Bore | 9.5:1 CR | Stock Stroke 89.6mm - BMW N55/S55

Sale price$642.60 Regular price$714.00
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Description

Ultra Series Piston Set By JE - 84mm Standard Bore | 9.5:1 CR | Stock Stroke 89.6mm - BMW N55/S55NOTE: 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. 307 Bore (mm) 84. Top Compression Ring Thickness 0. 0400 Second Compression

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) 3.307
Bore (mm) 84.
Top Compression Ring Thickness 0.0400
Second Compression Ring Thickness 0.0480
Oil Ring Thickness 0.111
Forging Type FSR
Volume (cc) -14.70
Series JE Ultra Series
Piston Head Type Inv Dome/Dish
Pin Diameter (IN) 0.866
Compression Height 1.275
Make BMW
Wrist Pin Style - floating or press fit Floating
Wall Type CHAMFERED
Wall Thickness (IN) 0.230
Ringset Part Number JG1001-3307
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 367879S
Piston Pin Inside Diameter 0.406
Piston Pin Material 9310 NICKEL CARBON STEEL ALLOY
Piston Material 2618
Piston Pin Length (IN) 2.250
Piston Avg Wt 337
Pin Offset Yes
Pin Brand JE Pistons
Pin Part Number 866-2250-23-93C
Pin Included Yes
Pin Diameter (mm) 22.00
Oil Rail Support Included No
Deck Clearance 0.000
Brand JE Pistons


OE Part #'s:

11-25-8-619-196 / 11 25 8 619 196 / 11258619196

11-25-7-645-958 / 11 25 7 645 958 / 11257645958

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Exchange/Return Notes
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SKU: 75950076577

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Catherine Buehler
Chelsea, US
★★★★★ 5
Fits our razor perfectly
Great for replacing old ones on our rzr
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 7, 2025
M
Verified Purchase
mark l donald
West Palm Beach, US
★★★★★ 1
Does Not Fit Polaris Ranger
Not compatible for Polaris Ranger as it was advertised. Not the correct thread so it will strip. Do not buy if you need it for a Polaris UTV.
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Reviewed in the United States on June 28, 2025
J
Verified Purchase
Jose Quispe
Fort Morgan, US
★★★★★ 5
Easy to install
Good material easy to install
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Reviewed in the United States on February 25, 2026
T
Verified Purchase
Tristen Napaluch
Lake Worth, US
★★★★★ 5
They look nice.
Makes the car look nice 😎
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Reviewed in the United States on February 4, 2026
C
Christine Lopez
Fort Morgan, US
★★★★★ 5
No polarity and super bright.
Size: 194/T10, Color: White
Quick installation. Turned my halogen lights into led lights. No issues with polarity and no error codes. The license plate light shine much more bright than halogen lights. Amazing upgrade. Great price and highly recommend.
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Reviewed in the United States on March 3, 2026

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