YSS SUSPENSION Progressive fork spring 743.02.55

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.

2 springs are included for a complete fork conversion.
SPRING TYPE: PROGRESSIVE
LENGTH: 525MM
DIAMETER 1: 25MM
HARDNESS 1: 6 N/MM
HARDNESS 2: 8 N/MM
LEFT AIR CHAMBER: 150 MM
RIGHT AIR CHAMBER: 150 MM
RECOMMENDED VISCOSITY: 10W


APPLICATIONS OF THIS PRODUCT:
According to the data provided by the manufacturer, this article is compatible with the following brands, models and years:
Honda CB 650 50 CV, 37 kw 4cil. RC03 B Bastidores: RC03-3100003-RC03-3199999 1981-1982
Honda CB 650 50 CV, 37 kw 4cil. RC03 Z Bastidores: RC03-3000002-RC03-3001651 1979-1982
Honda CB 650 63 CV, 46 kw 4cil. RC03 B Bastidores: RC03-2100002-RC03-2199999 1981-1982
Honda CB 650 63 CV, 46 kw 4cil. RC03 Z Bastidores: RC03-2000037-RC03-2020833 1979-1982
Honda CB 750 F Bol d´Or 79 CV, 58 kw 4cil. RC04 A Bastidores: RC04-2116243-RC04-2125120 1980
Honda CB 750 F Bol d´Or 79 CV, 58 kw 4cil. RC04 B Bastidores: RC04-2200018-RC04-2213525 1981
Honda CB 750 F Bol d´Or 79 CV, 58 kw 4cil. RC04 C Bastidores: RC04-2300008-RC04-2399999 1982
Honda CB 750 F2 Bol d´Or 79 CV, 58 kw 4cil. RC04 C Bastidores: RC04-4000012-RC04-4099999 1982
Kawasaki Z 1000 A 85 CV, 63 kw 4cil. KZT00A 2 Bastidores: KZT00A henceforth27501-- 1978-1979
Kawasaki Z 1000 MK2 94 CV, 69 kw 4cil. KZT00A Bastidores: KZT00A henceforth38416-KZT00A henceforth43000 1979
Kawasaki Z 1000 MK2 94 CV, 69 kw 4cil. KZT00A Bastidores: KZT00A henceforth43001-KZT00A henceforth43006 1980
Kawasaki Z 1000 MK2 94 CV, 69 kw 4cil. KZT00A Bastidores: KZT00A henceforth43027-- 1980
Kawasaki Z 650 B 67/48 CV, 49/35 kw 4cil. B 1 Bastidores: B henceforth00001-B henceforth27500 1977
Kawasaki Z 650 B 67/48 CV, 49/35 kw 4cil. B 2 Bastidores: B henceforth27501-- 1978-1980