AUDI - SEAT - SKODA - VW motor 1.8T 20v

Double valve spring + retainers for VAG Group 1.8T 20v:
- 150cv - 180cv - 210cv - 225cv
Audi A3, A4, S3, Seat Ibiza Cupra, Leon Cupra, VW Golf GTI 1.8T....etc 
High recommended for high revs and high performance engines. 

Kit include 12 single inlet valves springs + 16  double exhaust valve springs + 20 retainers (optional). 

Installed spring: 34mm (inlet) - 32mm (exh)
Valve lift: 13,5mm (inlet) - 12,5mm (exh)
Hardeness: 78 kp