Available Hot Racing front springs: SLF48FS261 (factory spec progressive rate), SLF48MR268 (linear rate), SLF48RS286 (rally spec progressive rate) - Available Hot Racing rear springs: SLF63FS261 (factory spec progressive rate), SLF63MR268 (linear rate), SLF63RS286 (rally spec progressive rate) SN December 17, 2018.
