742-Series
Muffler Clamps
The Original Equipment Manufacturer style muffler
clamps come with the special washer and bolt for the original look.
The Heavy Duty style have an allen bolt. (Only available in limited quantities
in a few sizes right now - Sept. 2003)
The muffler clamps are available in 1-3/8", 1-1/2", 1-5/8", 1-3/4" and 1-7/8".
Muffler clamps can also be ordered under the O.E.M. part numbers for individual
pieces.
F.Y.I
A Brief Guide to Muffler & Clamp Sizes:
Please note that measurements given below are for
stock, low, exhaust pipes. High pipes and custom exhaust may differ. When
ordering for those, or any case where there is any question on size of clamp
required, please advise us of O.D. of exhaust pipe at outlet in inches. Size of
clamp required would be next size up, to allow for wall thickness of muffler.
Outside Diameter of the Exhaust Pipe - Inside Diameter of the Muffler
1962-68 Norton Atlas - 1-5/8" - uses 1-3/4" clamp
1968-69 Norton Commando (w/ Atlas style mufflers) - 1-5/8" - uses 1-3/4" clamp
1970-75 Norton Commando - 1-3/8" - uses 1-1/2" clamp
All BSA Twins - 1-1/2" - uses 1-5/8" clamp
1971-72 BSA A75 - 1-1/2" - uses 1-5/8" clamp
All Preunit Triumph OHV Twins - 1-3/4" - uses 1-7/8" clamp
All Unit Triumph 650, pre 1975 - 1-1/2" - uses 1-5/8" clamp
1973 on Triumph 750 Twins - 1-3/8" - uses 1-1/2" clamp
Triumph Triples used various mufflers and clamps.
Frame Clamps
Great for securing exhaust systems,
oiltanks, footpegs, crash bars, etc., without welding.
Chrome three piece frame clamps:
BCS # 742-78 - 7/8"
BCS # 742-1 - 1"
BCS # 742-118 - 1-1/8"
BCS # 742-114 - 1-1/4"