The patented hidden breather backplate is O-ring sealed at the cylinder heads and vents into the throttle opening for a nearly closed system

MCS “Advance Series” AGM batteries are synonymous with high quality

The KwikWick®C lining effectively wicks away moisture and keeps you cool and dry

- Perfect for both daily use and winter storage

S&S Top End Guardian Kit – M8 COMMUNICATION SYSTEMS The patented hidden breather backplateS&S Top End Guardian Kit M8 Your insurance against top end weaknesses A complete S&S upgrade kit for your M8 engine, designed to eliminate the known weak points of the OEM cylinder head especially when using performance cams and higher lift (+0. 550" lift and above). The kit is bolt on, requires no modifications, and gives you peace of mind as you push the engine to its potential. Contains the following quality parts from S&S: Rocker Arm Shafts S&S