YSS SUSPENSION Progressive fork spring 743.07.44

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: 400MM
DIAMETER 1: 31.5MM
HARDNESS 1: 6 N/MM
HARDNESS 2: 9 N/MM
LEFT AIR CHAMBER: 140 MM
RIGHT AIR CHAMBER: 140 MM
RECOMMENDED VISCOSITY: 7.5W


APPLICATIONS OF THIS PRODUCT:
According to the data provided by the manufacturer, this article is compatible with the following brands, models and years:
Kawasaki ZR 550 B Zephyr 50/27 CV, 37/20 kw 4cil. ZR550B 2 Bastidores: ZR550B henceforth04001-ZR550B henceforth12000 1991
Kawasaki ZR 550 B Zephyr 50/27 CV, 37/20 kw 4cil. ZR550B 3 Bastidores: ZR550B henceforth12001-ZR550B henceforth22000 1992
Kawasaki ZR 550 B Zephyr 50/27 CV, 37/20 kw 4cil. ZR550B 4 Bastidores: ZR550B henceforth22001-ZR550B henceforth30000 1993
Kawasaki ZR 550 B Zephyr 50/34 CV, 37/25 kw 4cil. ZR550B 5 Bastidores: ZR550B henceforth30001-ZR550B henceforth36000 1994
Kawasaki ZR 550 B Zephyr 50/34 CV, 37/25 kw 4cil. ZR550B 6 Bastidores: ZR550B henceforth36001-ZR550B-999999 1995
Kawasaki ZR 550 B Zephyr 50/34 CV, 37/25 kw 4cil. ZR550B 7 Bastidores: ZR550B henceforth41001-ZR550B henceforth45000 1996
Kawasaki ZR 550 B Zephyr 50/34 CV, 37/25 kw 4cil. ZR550B 8 Bastidores: ZR550B henceforth45001-ZR550B henceforth50000 1997
Kawasaki ZR 550 B Zephyr 50/34 CV, 37/25 kw 4cil. ZR550B 9 Bastidores: ZR550B henceforth50001-ZR550B-999999 1998-1999