1984-86 Honda GL1200 Rear Master Cylinder Reservoir Diaphragm ~ Replaces Honda OEM 45520-300-000 GL1100A (1983) Aspencade and circuit application

and circuit application

This brake master-cylinder repair kit renews the internal piston

Honda GL1200I Interstate (1984-86)

Use compatible plug caps and verify good grounds and battery voltage before testing

spongy lever feel

1984-86 Honda GL1200 Rear Master Cylinder Reservoir Diaphragm ~ Replaces Honda OEM 45520-300-000 GL1100A (1983) Aspencade and circuit applicationRear Master Cylinder Reservoir Diaphragm Replaces Honda OEM 45520 300 000. This brake reservoir diaphragm seals under the master cylinder cap while allowing brake fluid volume changes as pads wear. Use it when the diaphragm is swollen, torn, hardened, leaking, or no longer seals the brake fluid reservoir. Fitment Compatibility Fits Honda: Honda GL1200 (1984) Honda GL1200A Aspencade (1984 86) Honda GL1200I Interstate (1984 86) Honda GL1200L Limited