BC Racing ER Series Coilovers for 1999-2002 Nissan Skyline R34 GTR AWD (BNR34)BC Racing ER Series Coilovers for the 1999 2002 Nissan Skyline R34 GTR (BNR34) put race grade adjustability in reach of the serious track day driver, with independent compression and rebound tuning at every corner. Every kit is extensively tested on the Skyline R34 GTR BNR34 chassis and refined until it balances ride quality with performance the reason Skyline R34 GTR coilovers from BC Racing are the best selling adjustable kits in their segment