The MRP 1x V3 Alloy E-MTB Chainguide is perfect for E-MTB cross-country riders and racers wishing for more security out of their "narrow/wide" setups. Fits 53mm chain line and Shimano E8000/E7000 Steps motors mounted horizontal to 25 degreesFor use with 34-38t chainringsLightweight chain retentionMounting hardware included and install possible with just a single 4mm HEX wrench.Tracked and grooved upper guide and backplate increases stiffnessCo-molded "HD2" upper guide with softer durometer interior for silent guidanceItem SpecificationsChainguide Mount TypeShimano StepsDefined ColorBlackMax Tooth (teeth)38 MRP 1x V3 Alloy E-MTB Chainguides Chain Retention System UPC: 702430186490