Wossner Civic 1.5 16v Turbo Forged Piston Kit The Wossner Civic 1.5 16v Turbo Forged Piston Kit is the premier engine internal upgrade for the 10th and 11th Generation Honda Civic equipped with the L15B7 Earth Dreams engine. While the factory engine is turbocharged, high-output builds pushing beyond standard boost limits require the superior structural integrity that only a forged component can provide. By utilising a 9.5:1 compression ratio, these pistons offer a strategic reduction from the stock 10.4:1, providing a safer tuning window for increased boost pressure and preventing the catastrophic failure associated with "LSPI" (Low-Speed Pre-Ignition) often found in small-displacement direct-injection engines. Precision-engineered in Germany, these pistons are forged from 4032-T6 aluminium alloy, noted for its low thermal expansion and high silicon content. This allow for tighter piston-to-bore clearances, ensuring a quieter engine and reduced oil consumption during the warm-up cycle. Each piston is finished with a signature Moly-based skirt coating to drastically reduce friction and a mirror-polished crown to reflect heat and eliminate sharp edges that can cause pre-ignition. This kit is a direct-fit solution for enthusiasts looking to build a reliable, high-horsepower L15 turbo engine. Key Performance Features Lowered 9.5:1 Compression: Optimised for high-boost applications to allow for more aggressive ignition timing and increased turbo pressure. 4032-T6 High-Silicon Alloy: Provides incredible strength and stability with minimal expansion, ideal for modern daily-driven performance cars. Moly Skirt Lubrication: A permanent dry-film lubricant that reduces drag and protects cylinder walls during high-load and high-RPM scenarios. Mirror-Polished Crowns: Specifically designed to manage heat and prevent carbon buildup, reducing the risk of detonation. Comprehensive Installation Kit: Supplied with heavy-duty gudgeon pins, a complete high-performance ring set, and precision-matched circlips. Technical Specifications Feature Specification Engine Code Honda L15 / L15B7 / L15BA Vehicle Fitment Honda Civic 1.5 Turbo (2017–Present) Bore Size Options 73.00mm (Std) / 73.50mm Compression Ratio 9.5:1 (Turbo / Low Compression) Compression Height 28.60mm Stroke 89.40mm Pin Diameter 20.00mm OEM Rod Length 139.00mm Material 4032-T6 Forged Aluminium Why Choose Wossner? Wossner is globally recognised for its pioneering work in motorsport forging technology, drawing on decades of experience in Formula 1 and World Rally Championship engineering. By controlling the entire manufacturing process—from the initial forging in their own facility to the final precision machining—Wossner ensures a level of quality and consistency that mass-produced alternatives cannot match. When you choose Wossner for your Honda L15 engine, you are choosing a product designed to withstand the brutal stresses of competition while maintaining the refined operational noise levels required for fast-road use.
