Designed to take extreme punishment, without punishing your walled. The TRS Chainguide offers full drivetrain protection (upper slider and bashguard) and a durable steel backplate.A modular assembly allows riders to choose from one of three sizes of bash guards (28-36t included).All polycarbonate parts are solvent resistant, and our tool-free compact upper slider is co-molded to cut down on noise. Key Features: Backplate material: Chromoly Steel,Bashguard: 28-30t and 32-34t included,Chain retention: Yes,Chainline: non-Boost, Boost, SuperBoost,Drivetrain protection: DMB (Direct Mount Bashguard, two sizes included),Features: 2 sizes of replaceable Direct Mount Bashguard (DMB) (28-36t included), steel hardware, optional lower armature, solvent-resistant polycarbonate, adjustable upper slider opens without tools,Included: Chainguide, direct mount bashguard x2, long ISCG bolt x2, short ISCG bolt x2, chainline spacer x3,Upper Slider: Adjustable, co-molded, tool-free compact upper slider.,Weight: 161g (34T).