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Application Specific: 2010-2016 Audi S4
It must also be noted that these stroker kits are also compatible with the RB25 block
* Built-in Direct Digital Wideband Controller reduces wiring and simplifies installation
and performance
02-07 WRX/STi / 93-07 Impreza / 90-07 Legacy models
Kelford Racing Valve Springs Nissan SR20DET / RB25DET yellow stuff Application Specific: 2010-2016 Audi S4NISSAN RB20DET RB25DET. Fits early heads without NVCS. High performance PACALOY single valve spring set to suit OEM retainers and spring base. 85lb seat pressure at 36. 0mm install height. Coil bind at 22. 0mm.
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