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Ferrea valve springs are developed from high strength alloys, including premium grade chrome silicone steel These springs are manufactured with state-of-the-art equipment. Ferrea springs are heat-treated and stress-relieved, which dramatically increases the spring's life. Strict quality control procedures and cycle testing ensures consistency from batch to batch. Ferrea valve springs provide the stability needed for high lift, high rpm racing and street car engines. Kit includes a set of 24 springs. MUST be used with the Ferrea Spring Seat and Titanium Retainers. See links below.
https://www.turnermotorsport.com/e/p-163-e36-325-328-m3-ferrea-spring-seat-set/
https://www.turnermotorsport.com/e/p-31-e36-325-328-m3-ferrea-titanium-retainer-set/
This item fits the following BMWs:
1992-1998 E36 BMW 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
1991-1995 E34 BMW 525i
This product was last offered at the strikethrough price on
04-13-2026
JE Pistons BMW S50B32 Euro Piston 12.5:1 Compression – 86.75 mm Bore – 1.271 in. CH, -5.40 CC is a high-performance upgrade for enthusiasts looking to maximize their BMW engine's power. Available from Turner Motorsport, these pistons are specifically engineered for the BMW S50B32, delivering exceptional strength and durability. With a compression ratio of 12.5:1, they optimize combustion efficiency and significantly increase horsepower and torque. Designed for both track and street use, the JE Pistons ensure that your BMW performs at its best, whether you're racing or enjoying a spirited drive.
JE Pistons BMW S50B30 USA Piston 12.5:1 Compression – 86.50 mm Bore – 1.291 in. CH, -5.00 CC is a high-performance piston specifically designed for the BMW S50B30 USA engine. Available through Turner Motorsport, these pistons are engineered for racing enthusiasts seeking to optimize power and reliability. With a compression ratio of 12.5:1, they provide enhanced performance while maintaining durability under extreme conditions. The 86.50 mm bore ensures precise fitment, while the -5.00 CC dome volume contributes to improved combustion efficiency.
Schrick Technical Information / Specs
Schrick Technical Information / Specs
Here’s another version of the description for the JE Pistons 12.5:1 Compression Ratio Kit for BMW S50B30US, following a more technical and product-focused tone:
Maximize Your BMW’s Power with High-Compression JE Pistons
The JE Pistons 12.5:1 kit is engineered to give your BMW S50B30US engine a significant performance upgrade. This set of six precision-forged pistons is designed for enthusiasts looking for more power through increased compression, whether on the street or the track.
Ideal for High-Performance Builds
Designed for those who push their BMW S50B30US to the limit, this 12.5:1 compression piston kit delivers improved power, torque, and reliability, especially in naturally aspirated builds or when paired with supporting modifications like higher-lift cams or race-tuned ECUs.
BMW S50B32 EURO Kit - Single Unit
Elevate your BMW S50B32 engine performance with the S50B32 EURO Kit, expertly designed for enthusiasts seeking to unlock the full potential of their engine. This high-performance kit is tailored specifically for the S50B32, known for its impressive power and engineering excellence. With this kit, you can experience enhanced horsepower, improved throttle response, and increased overall efficiency, making it ideal for both street and track applications.