For use with our Shorty Airbox Eliminator, Fastback Starter Cover, or when the airbox is removed on a post 1979 R45, R65, R80 or R100.
These require the standard BMW breather hoses that were used with the square airfilter style air boxes.
 - Either BMW part #11 15 1 337 258 (Long type for R80/100 1981 onwards with forward breather) or 11 15 1 337 257 (Short type from R45/65 1981 onwards with rearward breather). We do not stock these hoses but they are available through genuine parts suppliers and are retrofitable.
The alloy bracket is fitted using the top right-hand gearbox bolt and the breather hose fits into it. The Uni Filter is then a push fit into the hose, locking the two together.
Uni Filter's breathers are made of a washable urethane which needs no oil or special cleaners.
Please note that this may not suit higher mileage or worn engines as they will emit some oil residue and may require a catch bottle or tray.