RockShox 11.4015.422.040 Spring Coil 170mm Firm Blue 2010+ Lyrik CheckoutSpec= Gun Metal Grey Frame: Spark RC Carbon HMF

Frame: Spark RC Carbon HMF Integrated Suspension Technology Flex Pivot / Adjustable head angle Syncros Cable Integration System BB92 / UDH Interface / 12x148mm with 55mm Chainline

Most droppers work great with both and it comes down to personal  preference on the firmness of the lever feel and extension of the lever over the grip

Application: Includes a sponge applicator for easy spreading

while pre-bent knees offer a superior fit

RockShox 11.4015.422.040 Spring Coil 170mm Firm Blue 2010+ Lyrik CheckoutSpec= Gun Metal Grey Frame: Spark RC Carbon HMFRockShox, 11. 4015. 422. 040, Spring, Coil, 170mm, Firm Blue, 2010+ Lyrik SRAM Model ID: FS SPP A0 TECH SPECS Misc 11. 4015. 422. 040 Spring Coil 170mm Firm Blue 2010+