Grab a pair of mini Rat Finks and be the envy of your friends and neighbors

and a pair each of rubber coil boots

NOTE: Not compatible with 3 brush 6V generators and lithium batteries

Fits all Big Twins 1987 & up

Each system is manufactured true to the originals and is available in raw steel

Rear Master Cylinder - 1958-1972 Harley-Davidson Big Twin - Replaces OEM #41761-58 41761-78 Brand_Grant Piston Rings Grab a pair of miniCast iron construction just like the original Wagner Lockheed type it replaces, painted silver to prevent corrosion. Notes: Disc brake models require the removal of the rubber coated reduction washer and the cup valve. Fits FL 1958 Early 1979 FX 1971 Early 1979 Replaces HD# 41761 58 & 41761 78 3 4" Bore