The all-new Ramp Control PRO upgrade cartridges pair MRP’s acclaimed Ramp Control technology with traditional air-spring volume adjustment. Ramp Control PRO cartridges feature a threaded bottom which interfaces with MRP’s Huck Puck volume spacers - also found in the Bartlett, Raven, and Ribbon SL forks. Air volume tuning allows you to dictate the baseline air-spring curve and Ramp Control provides a powerful way to control high-speed and ending-stroke performance. Together, it’s a robust package that puts you in precise control of your air-spring performance quickly and easily. ~ Adds speed-sensitive ending-stroke control and bottom-out force adjustability to compatible forks. ~ Isolate and tune bottom-out with minimal changes to initial and mid-stroke. ~ Easy installation requires little time and few tools - no lower-leg removal required! Huck Puck Compatibility Guide Fox 36, Version F Version F is a cartridge-only kit suitable for 2018 Fox 36 forks of all travel and wheelsize options. A revised air-spring design in Fox's latest 36 makes the Fulfill™ spring conversion included in Ramp Control Upgrade Version D incompatible. ~ will fit 2018 and newer Fox 36 Float forks with the FIT 4, RC2, and Grip dampers. Recommended for 140-180mm 29”, 27.5+, and 27.5” forks. ~ will fit 2019-2020 Marzocchi Z1, all travel options. RS 35mm Ramp Control Cartridge Model B ~ will fit 2015 and newer Pike forks with "Boost" 15x110 axle spacing and all 2017 and newer Pike forks (regardless of axle spacing). ~ will fit all 2017 and newer Lyrik and Yari forks. ~ will fit all 2017 and newer Revelation (35mm). ~ Not compatible with Dual Position Air forks. Recommended for 140mm+ 29”, 27.5+, and 27.5” forks. Please visit our website at http://www.ecomtb.com.my OR https://shopee.com.my/eco_mtb ** There is 1-3cm errors due to manual measurement. Please kindly understand. ** Actual product colour may slightly vary due to photographic lighting sources or your monitor settings. ** WE DO NOT DO COD ** ONLINE ONLY ** We support original products only. ** PRICE INDICATED IS ALREADY BEST PRICE, EXCLUDE COURIER