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Putting together a stronger Volkswagen 2.0T TSI for a turbo upgrade, performance rebuild, or demanding street and track use? The JE Pistons Forged Piston Kit, part number 329244, provides a performance-focused piston package for compatible 21mm wrist pin TSI engines. Made in the USA from forged 2618 aluminum, these pistons are designed for engine builders looking to upgrade their internal components while retaining the factory 82.50mm cylinder bore.
Featuring a 9.6:1 nominal compression ratio, -7.10cc dished crown, and full-round forging design, this kit combines proven forged piston construction with several useful performance features. Accumulator grooves support piston ring stability under elevated cylinder pressure, while smooth crown finishing helps reduce potential hot spots and stress concentrations. Precision wrist pin fitting and coated skirts add further refinements for demanding engine operation. JE Pro Seal piston rings, wrist pins, and retaining locks are included.
Key Features & Specifications:
| Specification | Details |
|---|---|
| Brand | JE Pistons |
| Part Number | 329244 |
| Product Type | Forged Engine Piston Kit |
| Engine Application | Volkswagen / Audi 2.0T TSI |
| Application Generation | 2008-2014 2.0T TSI, 21mm Pin Configuration |
| Engine Displacement | 2.0L |
| Cylinder Head | 2.0 TSI |
| Piston Material | Forged 2618 Aluminum |
| Forging Type | Round |
| Skirt Design | Full Round |
| Bore Diameter | 82.50mm |
| Bore Size | Standard |
| Compression Ratio | 9.6:1 Nominal |
| Piston Head Type | Dish |
| Piston Volume | -7.10cc |
| Compression Height | 1.165 in. |
| Average Piston Weight | 320g |
| Reference Engine Stroke | 3.654 in. (92.8mm) |
| Reference Connecting Rod Length | 5.669 in. (144mm) |
| Wrist Pin Material | 5115 Low-Carbon Steel, Case Hardened |
| Wrist Pin Diameter | 0.827 in. (21mm Nominal) |
| Wrist Pin Length | 2.250 in. |
| Wrist Pin Wall Thickness | 0.150 in. |
| Top Compression Ring Thickness | 0.0400 in. |
| Second Compression Ring Thickness | 0.0480 in. |
| Oil Ring Thickness | 0.111 in. |
| Top Ring Groove Width | 0.04000 in. |
| Second Ring Groove Width | 0.04800 in. |
| Oil Ring Groove Width | 0.11100 in. |
| Intake Valve Relief Depth | 0.190 in. |
| Intake Valve Relief Diameter | 1.440 in. |
| Intake Valve Relief Angle | 23° |
| Exhaust Valve Relief Angle | 23° |
| Accumulator Groove | Yes |
| Smooth Crown Finish | Yes |
| Precision Pin Fit | Yes |
| Skirt Coating | Yes |
| Piston Ring Set | JE Pro Seal, Included |
| Ring Set Reference | JG1004-3250 |
| Wrist Pins and Locks | Included |
| Piston Quantity | 4 |
| Manufacturing Location | USA |
Kit Includes:
4 x JE Pistons Round-Forged 2618 Aluminum Pistons
JE Pro Seal Premium Piston Ring Set
4 x Case-Hardened Steel Wrist Pins
Wrist Pin Retaining Locks
The earlier Volkswagen and Audi 2.0T TSI engines remain popular platforms for turbocharger upgrades, performance modifications, and engine rebuilds. When increasing boost or preparing an engine for more demanding driving, choosing the correct piston configuration is an essential part of the build.
JE Pistons 329244 uses forged 2618 aluminum, selected for its strength and ductility under demanding combustion conditions. Unlike an oversized piston kit, this version retains the standard 82.50mm bore, making it suitable for engines whose cylinder condition allows a properly measured standard-bore installation.
Its 9.6:1 nominal compression configuration provides a defined starting point for the intended engine geometry, while the -7.10cc dished crown is designed for the corresponding 2.0T TSI combustion chamber arrangement.
This kit uses JE's full-round forging design rather than the company's Forged Side Relief (FSR) configuration.
The round-forged construction provides a performance-oriented piston design with a full-round skirt profile. For buyers comparing JE piston options, this distinction is important because different forging designs can have different skirt geometry, weight, and clearance requirements.
In turbocharged engines, gases passing the top compression ring can accumulate between the top and second rings.
JE's accumulator groove provides additional volume for these gases, helping reduce inter-ring pressure and minimize ring flutter during high-cylinder-pressure operation.
This supports more consistent top-ring sealing, an important consideration for performance-focused 2.0T TSI engine builds.
JE's smooth crown finishing process removes sharp edges around the piston crown and valve relief areas.
Reducing these sharp transitions helps minimize potential hot spots and stress concentrations, particularly useful in an engine expected to operate under demanding combustion temperatures.
The smooth crown is one of the key distinguishing features of part 329244.
JE applies a specialized coating to the piston skirts to help reduce friction, wear, and operating noise.
The wrist pin bores are precision-honed for controlled pin-to-piston clearance. JE identifies typical pin-fit clearances of 0.0003 to 0.0010 inches, with actual measurements established during engine assembly.
The included 21mm steel wrist pins, retaining locks, and JE Pro Seal piston rings complete the package, providing the core piston components needed for a carefully prepared TSI short block.
Whether you're rebuilding an aging engine or preparing a Volkswagen 2.0T TSI for more ambitious turbocharged performance, JE Pistons 329244 combines American-made forged construction, smooth crown finishing, accumulator grooves, and coated skirts in a complete four-cylinder piston kit.
Fitment & Installation Notes:
2008-2014 Volkswagen / Audi 2.0T TSI: Manufacturer application catalog identifies the 21mm wrist pin engine generation. Exact vehicle and engine-code compatibility must be confirmed.
Engine Configuration: 2.0L TSI turbocharged four-cylinder requiring the specified piston geometry.
Required Finished Bore: 82.50mm.
Bore Classification: Standard bore, not an oversized piston kit.
Compression Ratio: Nominal 9.6:1 with the intended engine dimensions. Actual compression depends on combustion chamber volume, head gasket thickness, and deck clearance.
Piston Configuration: -7.10cc dished crown with 1.165-inch compression height.
Wrist Pin Diameter: 0.827 in. (21mm nominal).
Connecting Rod Compatibility: Connecting rods must accept 21mm wrist pins. Do not assume interchangeability with 20mm, 22mm, or 23mm TSI configurations.
Cylinder Preparation: Measure the pistons and cylinder bores to establish the required piston-to-wall clearance.
Piston Ring Installation: Check and set ring end gaps according to JE's requirements for the intended boost, fuel, and operating conditions.
Piston-to-Valve Clearance: Verify clearance during engine assembly, particularly with modified cylinder heads or aftermarket camshafts.
Engine Tuning: Fuel delivery, ignition timing, boost control, and ECU calibration should match the completed engine build.
Horsepower Rating: No fixed horsepower limit is specified for part 329244. Engine capability depends on the complete assembly, supporting modifications, machining, and tuning.
JE Pistons 329244 is a performance-focused forged piston kit for compatible Volkswagen and Audi 2.0T TSI engines, combining standard-bore dimensions, a 9.6:1 compression configuration, full-round forging, smooth crown finishing, and skirt coating in a complete set of four.
