Reinforced clutch spring set with approx. 10% higher contact pressure compared to the original springs and efficient protection against clutch slipping / Fitment: Yamaha: 88-89 FZR 400; 89-94 Austria FZR 3HE, 3RG 500; 89-93 H,M,N FZR 3HE, 3RG 600; 91-94 RR FZR 400