YSS SUSPENSION Progressive fork spring 743.01.89

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: 510MM
DIAMETER 1: 26.5MM
HARDNESS 1: 4.5 N/MM
HARDNESS 2: 6 N/MM
LEFT AIR CHAMBER: 120 MM
RIGHT AIR CHAMBER: 120 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:
BMW R 45 N 27 CV, 20 kw 2cil. 248 0352 Bastidores: 6 320 001-6 322 488 1978
BMW R 45 N 27 CV, 20 kw 2cil. 248 0352 Bastidores: 6 322 489-6 326 598 1979
BMW R 45 N 27 CV, 20 kw 2cil. 248 0352 Bastidores: 6 326 599-6 329 475 1980
BMW R 45 N 27 CV, 20 kw 2cil. 248 0355 Bastidores: 6 260 001-6 266 303 1981-1985
BMW R 45 S 35 CV, 26 kw 2cil. 248 0351 Bastidores: 6 300 001-6 302 764 1978
BMW R 45 S 35 CV, 26 kw 2cil. 248 0351 Bastidores: 6 302 765-6 305 582 1979
BMW R 45 S 35 CV, 26 kw 2cil. 248 0351 Bastidores: 6 305 583-6 306 430 1980
BMW R 45 S 35 CV, 26 kw 2cil. 248 0354 Bastidores: 6 270 001-6 275 540 1981-1985
BMW R 65 1Serie 45 CV, 33 kw 2cil. 248 0353 Bastidores: 6 340 001-6 342 274 1978
BMW R 65 1Serie 45 CV, 33 kw 2cil. 248 0353 Bastidores: 6 342 275-6 346 334 1979
BMW R 65 1Serie 45 CV, 33 kw 2cil. 248 0353 Bastidores: 6 346 335-6 349 336 1980
BMW R 65 2Serie 50 CV, 37 kw 2cil. 248 0358 Bastidores: 6 310 001-6 311 755 1980
BMW R 65 2Serie 50 CV, 37 kw 2cil. 248 0358 Bastidores: 6 311 756-6 316 902 1981
BMW R 65 2Serie 50 CV, 37 kw 2cil. 248 0358 Bastidores: 6 316 903-6 410 483 1982
BMW R 65 2Serie 50 CV, 37 kw 2cil. 248 0358 Bastidores: 6 410 484-6 412 338 1983
BMW R 65 2Serie 50 CV, 37 kw 2cil. 248 0358 Bastidores: 6 412 339-6 413 039 1984
BMW R 65 2Serie 50 CV, 37 kw 2cil. 248 0358 Bastidores: 6 413 040-6 413 588 1985
Hercules K 180 Military 17,7 CV, 13 kw 1cil. 437 437 Bastidores: --- 1991
Sachs K 180 Military 17,7 CV, 13 kw 1cil. 437 437 Bastidores: --- 1996