Sold out
JE Pistons Ring Sets 1.2-1.2-2.5-99.50 - JE Pistons JEPJC3104-3917
Click to zoom in

JE Pistons Ring Sets 1.2-1.2-2.5-99.50

$ 123.30

The JE Pistons piston ring set identified by manufacturer part number JC3104-3917 is designed to seal combustion pressure, control oil, and transfer heat when matched to the exact piston grooves and finished bore. Final compatibility depends on the complete engine combination and measured dimensions, not the part title alone.

Key Features

  • Exact official JE Pistons part number and GTIN
  • Official dimensions and material recorded in the specifications
  • Designed for measured performance-engine assembly
  • Requires professional clearance and compatibility verification

Fitment

Fitment Status Universal only by exact component dimensions
Required Verification Bore or pin diameter, ring or wall thickness, length, material, groove design, cylinder count, and intended engine use

Specifications

Brand JE Pistons
Manufacturer Part Number JC3104-3917
Product Type Piston Ring Set
Fitment Type Universal
Condition New
GTIN 00193564241559
Bore Diameter 3.917|99.50 MM
Top Compression Ring Thickness 0.0472 IN
Second Compression Ring Thickness 0.0472 IN
Oil Ring Thickness 0.098 IN

What's Included

One new JE Pistons piston ring set identified by manufacturer part number JC3104-3917 in the quantity and configuration stated by the official specifications. Rings, pins, locks, coatings, and installation components are included only when expressly listed for this exact part number.

About JE Pistons

JE Pistons engineers forged racing pistons, piston rings, wrist pins, locks, and related engine components for measured domestic, import, European, and professional motorsport builds.

Related JE Pistons Products

Frequently Asked Questions

How do I confirm JE Pistons JC3104-3917 matches my engine parts?
Match every listed dimension and material to the piston, connecting rod, cylinder bore, and intended engine use. A similar bore or diameter alone does not confirm compatibility.

Is this ring set correct for a 3.917|99.50 MM cylinder bore?
Bore must match along with top, second, and oil-ring thickness, cylinder count, piston groove dimensions, and ring material. Verify all values against the exact piston before machining.

Should piston-ring end gaps be used as supplied?
No universal gap applies to every build. Measure every ring in its assigned cylinder and set end gap using JE guidance for the bore, fuel, boost, nitrous, heat load, and intended use.

Installation Instructions

Use the current JE Pistons instructions for part number JC3104-3917 and the engine builder's measured assembly specifications. A qualified machine shop must verify bore finish, clearances, ring gaps, pin fit, lock installation, orientation, balance, deck height, valve clearance, compression ratio, lubrication, and break-in before operation.

Request For Information

Have questions about JE Pistons Ring Sets 1.2-1.2-2.5-99.50? Fill out the form below and we'll get back to you by the next business day.
Engine

Engine

Shop automotive engine parts, cooling-system components, oil-system upgrades, ignition parts, pulleys, sensors, gaskets, fuel components, and engine-bay accessories at Black Ops Auto Works. This collection covers vehicle-specific replacement parts, performance upgrades, supporting hardware, and universal components for street cars, trucks, SUVs, Jeeps, diesel vehicles, off-road builds, and motorsport applications. Engine Parts and Performance Components The Engine collection brings together components used throughout the engine, lubrication system, cooling system, ignition system, fuel system, crankcase ventilation, accessory drive, and engine compartment. Available products range from replacement sensors and gaskets to rotating-assembly parts, performance cooling systems, supercharger pulleys, catch cans, cylinder heads, camshafts, intake manifolds, and engine-bay dress-up components. Engine compatibility cannot be determined from vehicle model alone. Confirm the exact year, make, ...

View Engine Products
Genesis Electrified G80 Parts and Accessories

Genesis Electrified G80 Parts and Accessories

The Genesis Electrified G80 is the battery-electric version of the Genesis G80 luxury sedan, sharing the GE1 platform with the combustion G80 but featuring a fully electric drivetrain with dual motors and an 87.2 kWh battery pack producing 365 horsepower and 516 lb-ft of torque. Available from the 2022 model year onward, the Electrified G80 targets the premium electric luxury sedan segment with standard all-wheel drive, a range of approximately 282 miles, and Genesis's comprehensive suite of driver assistance and connected vehicle technology. As with any luxury EV, maintenance focuses on brake components, cabin filtration, and exterior protection rather than traditional powertrain service items. Owners who take pride in their vehicle's condition and performance look to quality aftermarket suppliers for brake upgrades, wheel accessories, and interior protection components. Popular Upgrades Brake pads are the primary performance upgrade for the Electrified G80, as EV regenerative brak...

View Genesis Electrified G80 Parts and Accessories Products
Genesis G70 Parts and Accessories

Genesis G70 Parts and Accessories

The Genesis G70 is a compact executive sport sedan that launched in 2019 on the Kia Stinger's K platform, sharing its rear-wheel-drive architecture and turbocharged engine options with one of the most driver-focused cars in the Genesis lineup. Available with a 2.0T four-cylinder producing 252 horsepower or a 3.3T twin-turbocharged V6 making 365 horsepower, the G70 competes directly with the BMW 3-Series, Audi A4, and Mercedes C-Class in a segment where performance enthusiasts demand driving dynamics alongside luxury equipment levels. The G70's independent double-wishbone front and multilink rear suspension provide a solid base for performance improvements, and the engine platform shares many components with the Kia Stinger for broad aftermarket coverage. Owners who prioritize driving performance alongside interior comfort find the G70 an excellent platform for suspension, exhaust, and brake upgrades. Popular Upgrades Eibach Pro-Kit lowering springs are one of the most popular handli...

View Genesis G70 Parts and Accessories Products
Genesis G80 Parts and Accessories

Genesis G80 Parts and Accessories

The Genesis G80 is a full-size luxury sport sedan that competes directly with the BMW 5-Series, Mercedes E-Class, and Audi A6, offering rear-wheel or all-wheel drive with turbocharged four-cylinder, V6, and the high-performance G80 Sport's 3.5T twin-turbo V6 producing 375 horsepower. Built on the Genesis GE1 platform, the G80 was restyled significantly for the 2021 model year with a new exterior design and interior technology upgrade that elevated it to the top tier of the luxury midsize segment. The 3.5T engine in the G80 Sport is shared with the GV80 Coupe and responds well to exhaust and intake upgrades that enhance the sound and airflow characteristics of the twin-turbo powerplant. Owners invest in quality suspension, brake, and cosmetic upgrades to personalize and enhance the driving experience of what is already a sophisticated luxury vehicle. Popular Upgrades Eibach Pro-Kit springs are the most popular suspension upgrade for the G80, providing a 1.0 to 1.2-inch drop that impr...

View Genesis G80 Parts and Accessories Products
Genesis G90 Parts and Accessories

Genesis G90 Parts and Accessories

The Genesis G90 is the flagship full-size luxury sedan in the Genesis lineup, positioned above the G80 and competing with the BMW 7-Series, Mercedes-Benz S-Class, and Lexus LS in the ultra-luxury segment. Available with a 3.5T twin-turbo V6 producing 375 horsepower or the stunning Magma 3.5T performance variant with available rear-steering and 420 horsepower, the G90 offers a compelling combination of performance, technology, and executive comfort at a price point well below its German competitors. The second-generation G90 launched in 2023 on a longer-wheelbase platform with rear-wheel steering as a standard or optional feature, dramatically improving low-speed maneuverability and high-speed stability for a vehicle of this size. Owners of the G90 invest in quality brake, suspension, and cosmetic accessories to maintain the vehicle in peak condition. Popular Upgrades Akebono ACT ceramic front and rear brake pads are the most popular service upgrade for the G90, providing near-zero b...

View Genesis G90 Parts and Accessories Products
Hyundai Genesis Parts and Accessories

Hyundai Genesis Parts and Accessories

Hyundai Genesis Parts and Accessories – Upgrade your vehicle with top aftermarket and OEM parts, including interior accessories, exterior accessories, hoods, body kits, suspension, exhaust, wheels, tires, and more. Enhance performance, durability, and style on all makes & models. Find the best upgrades today!

View Hyundai Genesis Parts and Accessories Products
JE Pistons

JE Pistons

Shop JE Pistons forged piston kits, ring sets, wrist pins, and retainers by exact manufacturer part number, official dimensions, and verified engine application. JE Pistons Product Families The collection includes forged piston kits for domestic, import, and European performance engines plus JE Pro Seal ring sets, wrist pins, and pin retainers for measured engine assembly. Choosing the Correct JE Pistons Component Match the exact JE Pistons manufacturer part number Confirm engine code, bore, stroke, rod length, and cylinder head Calculate compression with measured chamber, gasket, deck, and piston volume Verify pin diameter, pin length, wall thickness, and rod small-end design Match ring bore and every groove thickness to the piston Use machine-shop measurements for final clearances and ring gaps Related Engine Collections Pistons Piston Rings Connecting Rods Engine Block Components Frequently Asked Questions Does matching the engine family guarantee a JE piston kit will fit?No...

View JE Pistons Products
Military & First Responder Discounts

Military & First Responder Discount Program

Black Ops Auto Works proudly honors active duty military, veterans, National Guard, reserves, police officers, firefighters, and EMTs with an exclusive 5% discount on all performance parts and carbon fiber upgrades. Verify instantly and start saving today.

Learn More & Apply

Your cart

×