Wiseco Pistons SB5137-905 Boostline Piston Kit for Subaru EJ20/EJ25 Turbo 130.5mm Bore

The Wiseco Pistons SB5137-905 Boostline Piston Kit is engineered specifically for turbocharged Subaru EJ20 and EJ25 engines, delivering enhanced strength and reliability for high-performance applications. This complete piston kit features a 130.5mm bore size and is designed to handle increased boost pressures while maintaining optimal combustion efficiency.

Key Features:

• Precision-machined from high-strength forged aluminum alloy for maximum durability
• 130.5mm bore diameter optimized for turbocharged EJ20/EJ25 applications
• Boostline series construction designed to withstand elevated cylinder pressures
• Complete kit includes pistons, rings, pins, and circlips for straightforward installation
• Advanced ring groove geometry reduces friction and improves ring seal
• ArmorGlide skirt coating minimizes friction and protects against scuffing during break-in
• Engineered to maintain proper compression ratios for forced induction applications

Wiseco's Boostline pistons are a popular choice among Subaru performance builders and enthusiasts seeking reliable power increases. The oversized 130.5mm bore allows for displacement increases and improved airflow characteristics. Each piston is manufactured to exacting tolerances using Wiseco's proprietary forging process, ensuring consistent quality and performance across the entire set.