Ferrea Single Valve Spring (SINGLE) - Audi / 2.5T / TT-RS / RS3 | S10170-1

Ferrea Valve Springs are developed from high strength alloys, including premium grade chrome silicon steel. These springs are manufactured with state-of-the-art equipment. Our 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 engines, while minimizing the load loss for today’s aggressive valvetrain combinations.



- Open Pressure 180lbs @ 27.00mm In / 185lbs @ 26.50mm Ex
- Max Lift 11.00mm In / 10.50mm Ex
- Coil Bind 24.60mm
- Manufacturer Ferrea
- Valve Spring Type Single
- Seat Pressure 80lbs @ 37.00mm In / 85lbs @ 36.50mm Ex
- Valve Spring Rate 254lbs/inch



Replaces OEM Part #'s 

06F-109-623 / 06F 109 623 / 06F109623

06F-109-623-B / 06F109623 B / 06F 109 623 B / 06F109623B

⚠️CALIFORNIA WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

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