



Lewis LH Brake Lever Diaphragm
The Lewis Bike LH Brake Lever Diaphragm is a simple replacement part for the LH4, LHP, and LHT brake systems. It fits into the brake lever reservoir, maintaining hydraulic pressure and preventing fluid leakage. This diaphragm helps ensure smooth and reliable brake performance over time. It is an essential component to keep your brake system working properly and should be checked every service.
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Bikes, community, and honest service
Laneway Cyclery is your inner-west hub for bikes that shred , climb, cruise, commute, sprint, and spin. We specialise in two-wheeled freedom. Made for city streets, gravel roads, and every laneway in between.


Just bikes, community, and honest service, that’s how we do it.
About Laneway Cyclery
Laneway Cyclery is your innerwest hub for bikes that shred , climb, cruise, commute, sprint, and spin. We specialize in two-wheeled freedom. Made for city streets, gravel roads, and every laneway in between.
