Double security by securing onto disc with chain (469382

Just bolt the stable and secure side struts

Piston diameter 18 mm

Sweater knit 2x2 rib stitch construction wtih woven logo wrap label at cuff

Extended boot life

DNA Air Filters - Stage 2 Air Filter Cover for BMW R 18 20-23 Options:Air Filter Cover Double security by securing ontoThis filter features DNAs Stage 2 kit eliminates the OEM intake snorkel of BMW model and offers higher performance and better intake sound. This Stage 2 kit is designed to replace the stock plastic air box intake cover. Combined with the R BM18CR20 01 (sold separately) will increase the Airflow, Filtering Efficiency, Power, Torque and Throttle response. The airflow of this new DNA Stage 2 combined ALWAYS with the DNA Stage 1 Air Filter (P BM18CR20 01)