AMTuned will be closed the week of 11/3 for the SEMA show. Orders placed starting on 10/30 will be shipped on the week of 11/10.



AMTuned Piston Ring Set Audi RS4, RS5 & R8 V8 4.2L BNS, CFS, BYH, CND

Regular price $639.95

Tired of paying those ridiculous OEM prices for piston ring sets? We have your solution! Introducing the AMTuned 4.2L piston ring set specifically designed for the 32V 4.2L engines found in the RS4, RS5 and R8's! This is a private label item sourced from total seal using our specifications on piston rings. Out ring packs are PVD coated to ensure functionality in both Sleeved bores and factory Alusil bores. We have upgraded the 3rd oil ring away from the failure prone spring loaded ring to a 3 piece ring. 

Each kit contains the following:

  • 8x: PVD coated top rings
  • 8x: PVD coated napier cut second ring
  • 8x: 3 piece oil control ring