Yokomo (Pro shock spring long type with color marking at the bottom)
Black - 258 gF/mm
Blue - 264 gF/mm
Yellow - 280 gF/mm
Pink - 290 gF/mm
Green - 303 gF/mm
Orange - 330 gF/mm
HPI Racing (Color marking at the bottom of the spring)
Blue - 273 gF/mm
Silver - 302 gF/mm
Pink - 320 gF/mm
Gold - 340 gF/mm
White - 363 gF/mm
Yellow - 388 gF/mm
Red - 400 gF/mm
Hara Spring V.1 (Color marking at the bottom of the spring)
Yellow - 230gF/mm
White - 250 gF/mm
Black 270 gF/mm
Purple - 290 gF/mm
Red - 310 gF/mm
Top Racing (Spring Rate engrave on the spring)
Gamma 393 gF/mm
Gamma 367 gF/mm
Gamma 344 gF/mm
Gamma 324 gF/mm
Gamma 306 gF/mm
Gamma 289 gF/mm
Alpha 626 gF/mm
Alpha 591 gF/mm
Alpha 560 gF/mm
Alpha 532 gF/mm
Alpha 507 gF/mm
Beta 347 gF/mm
Beta 325 gF/mm
Beta 306 gF/mm
Beta 294 gF/mm
Beta 274 gF/mm
*Gamma Spring is design for rubber asphalt racing
*Alpha & Beta spring is design for carpet and foam tire racing
Hope this help
Source :
H2