GasGas Suspension Lowering Kit. Must be paired with 420MM springs. Can also be used for new closed chamber fork bikes if 420MM fork springs are used. Made of the highest quality materials. Tested in the toughest conditions. Developed together with the vehicle. Enables shorter drivers to also achieve the optimum seat height. Perfect compromise between maximum chassis performance and lowest possible vehicle height. No restrictions on riding dynamics. Note: Closed course competition use ONLY.