YSS SUSPENSION Progressive fork spring 743.03.61

YSS Progressive Wire fork springs with a firmer design than stock.

YSS fork springs are made of high quality silicon spring steel. This allows the thickness of the wire to be reduced, which makes the spring more active and thinner, but at the same time effectively prevents twisting of the spring.

To minimize noise and improve oil flow in the fork, the springs are fully polished and ground on the top and bottom.

The scope of delivery includes 2 springs for a complete conversion of the fork.
SPRING TYPE: PROGRESSIVE
LENGTH: 615MM
DIAMETER 1: 27MM
HARDNESS 1: 4.9 N/MM
HARDNESS 2: 7.5 N/MM
LEFT AIR CHAMBER: 160 MM
RIGHT AIR CHAMBER: 160 MM
RECOMMENDED VISCOSITY: 15W


APPLICATIONS OF THIS PRODUCT:
According to the data provided by the manufacturer, this article is compatible with the following brands, models and years:
Yamaha XJ 750 Seca 81 CV, 60 kw 4cil. 11M 11M Bastidores: 11M henceforth00101-11M henceforth50000 1982-1984