Speak with an Expert
Speak with an Expert
Free* Shipping on Orders Over $159
Easy 30 Days- No Hassle Returns
37,000+ 5 Star Reviews
MFG Fitment Guarantee
Couldn't load pickup availability
The JE Pistons forged piston kit for Mazda Miata 1.8L BP gives your engine build the strength and precision of a dedicated performance piston package. Manufactured in the USA from 2618 aluminum, these pistons are designed for the heat and cylinder pressure of demanding street, track, and racing applications. JE combines decades of motorsport experience with in-house forging and precision machining to create application-specific crown geometry and consistent piston dimensions. Durable forged construction makes this kit a strong foundation for a performance short block, while the included piston rings bring the package together. Whether you are rebuilding an engine or planning a more ambitious performance project, this set of four delivers quality materials and proven engineering.
| Specification | Details |
|---|---|
| Brand | JE Pistons |
| Manufacturer Part Number | 255773 |
| Series | JE Pistons |
| Engine Application | Mazda Miata 1.8L BP |
| Cylinder Head | 1.8 BP MIATA |
| Bore Diameter | 83.50 mm |
| Compression Ratio | 9:1 |
| Compression Height | 1.205 in. |
| Piston Material | Forged 2618 Aluminum |
| Piston Quantity | 4 |
| Forging Type | Round |
| Piston Head Type | Flat |
| Piston Volume | -2.00 cc |
| Average Piston Weight | 294 g |
| Piston Ring Set Included | Yes |
| Top Compression Ring Thickness | 0.0400 in. |
| Second Compression Ring Thickness | 0.0480 in. |
| Oil Ring Thickness | 0.1110 in. |
| Top Ring Groove Width | 0.04000 in. |
| Second Ring Groove Width | 0.04800 in. |
| Oil Ring Groove Width | 0.11100 in. |
| Wrist Pin Outer Diameter | 0.787 in. |
| Wrist Pin Length | 2.250 in. |
| Wrist Pin Wall Thickness | 0.180 in. |
| Wrist Pin Material | 5115 Low Carbon Steel, Case Hardened |
| Connecting Rod Length | 5.234 in. |
| Engine Stroke | 3.346 in. |
| Intake Valve Relief Depth | 0.155 in. |
| Intake Valve Relief Diameter | 1.350 in. |
| Exhaust Valve Relief Depth | 0.130 in. |
| Exhaust Valve Relief Diameter | 1.150 in. |
| Intake Valve Relief Angle | 24.5° |
| Exhaust Valve Relief Angle | 24.5° |
| Accumulator Groove | Yes |
| Precision Pin Fit | Yes |
| Skirt Coating | Yes |
| Double Pin Oilers | Yes |
| Manufacturing Location | USA |
