Al-Fin Brake Drum Set - 9 inch - Radial Fins - Pair
Just like the extremely rare factory optional Al-Fin brake drums, these reproduction finned drums not only look good but substantially reduce brake fade on hard driven TRs. They feature strong finned aluminium alloy shells with iron inserts.
Because these are designed to fit all TR4,
TR4A, TR5, TR250 and TR6 the central hole is drilled to 70.5mm
so as to “fit all”. The potential “spigoting” effect of this
hole over the hub is neutralized by the tightening of the two
locating screws.
The Stud Holes are drilled on a PCD of 114.3mm (as
original) and suitable for standard “pull through” 7/16” studs
as used on all but the Girling axled TR4 cars. To fit the AL-FIN drums on an early
TR4 with “screw in” front mounted studs
there is a slight “shoulder” on the studs which might not
allow the AL-FIN to sit flat on the hub. We are led to believe
that most people resolve this by drilling the hub and
effectively converting it to use the later “pull through”
studs as fitted on all the other cars these AL-FIN’s are
designed to fit.
The Locating Screw Holes are drilled on a PCD of 100mm
(as original).