This is a hop-up Aluminum Servo Saver (bellcrank) for the for the HPI Savage 25, 4.6, X, XSS, XL and Flux.FEATURES: Aluminum construction, anodized in a silver color Supported with 4 ball bearings Spring loaded steering arm protects servo gears during impactINCLUDES: One aluminum bellcrank set Four 6x10mm bearings Two 3x17mm counter sunk screws Two 3mm nylon insert lock nutsREQUIRES: Installation into model kpm10/27/2004 ir/jxs