This specification of elastomer was first introduced for the Heusinkveld Ultimate+ pedals and with the continuous development they are now available for the Sim Pedal Sprints. In the kit there are different length and stiffness elastomers that can set a total of 6 force curves giving a wide range of brake pedal feel.Near zero failure rate and no performance degradation even after 1 million cyclesFirmer bump and rebound characteristicsA much more progressive brake feel. When applying force to the brake initially there will be more travel, then the brake pedal feel gradually but very clearly stiffensCompatibilityThis elastomer kit is already included in the Sim Racing Sprint Pedals purchased after December 2021. If the elastomers within the Sprint Pedal Kit have markings on the side indicating the length and resistance (soft or hard) then you already have the new specification. If there are no markings then you have the earlier spec and this elastomer kit is the perfect upgrade that will