NORTON EXHAUST PIPES & MUFFLERS
We stock pipes and mufflers from a variety of suppliers and in a variety of
styles including the swept-back pipes first used on factory racing singles such as the Norton Manx and popularized for the twins by Paul Dunstall. Additional mufflers that are adaptable to a Norton can be found on our Universal Exhaust page. We try to insure that our products
are of good quality and value but, as it is impossible for us to trial-fit everything we sell, occasionally it may be found that a supplier
has a produced a product that needs a bit of tweaking to fit properly. If this occurs, call and we will either give advice on fitting or
approve a return.
COMMANDO
The 750 Commando used a variety of exhaust pipe styles depending on
the model. Until now a "factory" replacement was unavailable for
any of the variations. Andover Norton, the source for factory parts, has
begun offering the 06-3375 & 06-3376 roadster pattern exhaust pipes as a
set. In addition to their superior fit and chrome plating, the pipes
feature a heavy duty, machined (opposed to rolled) surface at the head
end. This assures not only a better exhaust seal, but should eliminate
the breakage where the locking ring holds the pipe to the head. Though
more expensive than those from other suppliers, the quality of the pipes
and their expected longevity more than justify the additional cost.
Supplies are limited.
The 850 Commando, unlike the 750, used pipes connected together near the head. Though offering a slight performance increase, they tend
to leak and rust at the junction, rattle loose and cost more. Due to this, many owners
of pre-MK3 models change to the 750 style when replacing pipes.
If you choose to do so, be aware that the 850 exhaust locking rings are shorter than the 750s and you must either switch to the
06-3555 lock
rings (850 locking ring in the 750 length) or make up the difference in length with extra exhaust gaskets.
The MK3 used a slightly larger primary cover than the previous models
and due to this requires its own pipes. A switch to 750 pattern pipes is
usually (but not always) possible but does take considerable "tweaking"
to get them in place.
Stock exhaust pipes are 1 3/8 in diameter. We offer a chrome exhaust system that features 750 style pipes but that fit closer to the frame for better ground clearance and are 1 1/2 in diameter for better engine breathing at high RPM. The system includes matching peashooter style, straight through, baffled, seamless mufflers and stainless steel mounting brackets. These are tuned systems with the pipes being longer than stock and the new brackets properly locating the mufflers. All items below are priced as pairs or complete systems including muffler clamps.
Exhaust Pipes
|
 |
Mufflers
| #C402 | - | Peashooters - Seamless, 1 3/8 dia. |
| #C416 | - | Peashooters - With Seams (lower cost) 1 3/8 dia. |
| #C415 | - | Interstate Mufflers. |
| #C419 | - | Big Bore Peashooters - Seamless, 1 ½ dia., Bright Chrome. |
| #C420 | - | Big Bore Peashooters, 1 ½ dia., black chrome. |
| #C427 | - | S Mufflers. |
Complete Systems
| #C407 | - | Big Bore bright chrome system - 1 ½ pipes. |
| #C409 | - | Our best standard 750 Roadster style system |
| #C417 | - | Our least expensive standard 750 Roadster style system |
| #C425 | - | S system including heat shields & dogleg mount. |
Exhaust Accessories
| 06-2412 | - | Tab Washer |
| 06-2464 | - | Exhaust Locking Ring - Long Early Style for unbalanced pipes - Chromed Brass |
| 06-3555 | Exhaust Locking Ring - Long Late Style for unbalanced pipes - Chromed Brass | |
| 06-3555P | Exhaust Locking Ring - Long Late Style for unbalanced pipes - Polished Brass | |
| 06-3988 | - | Exhaust Locking Ring - Short Late Style for balanced pipes - Chromed Brass |
| 06-3990 | - | Collets - pre-MK3 850s |
| 06-3995 | - | Exhaust Sealing Washer (pre MK3) |
| 06-5259 | - | Seating Spherical, MK3 |
| 06-5260 | - | Collet, MK3 |
| C410 | - | Stainless Steel Roadster Muffler Brackets (6) - Replaces 06-1720, 06-1721 & 06-06-1722 |
Muffler Clamps Use a clamp one size larger than the exhaust pipe. Ex. - A 1 ½ pipe needs a 1 5/8 clamp.
| #M431 | - | 1 1/2 I.D. Chrome |
| #M432 | - | 1 5/8 I.D. Chrome |
| #M434 | - | 1 5/8 I.D. Stainless |
| #M433 | - | 1 3/4 I.D. Chrome |
FEATHERBED TWINS
There have been relatively few variations in the pipes used on the featherbed twins. When the 650SS was created it used pipes based on the 600cc Dominators, but modified to match the port angle of its newly designed head. The Atlas exhaust pipes were interchangeable with the 650s, but U.S. models were fitted with pipes 1 5/8 in diameter while the home market had 1 1/2 pipes that stepped up to 1 5/8 at the end so both variations could use the same mufflers. Today the home market type pipes are often the only ones available.
Exhaust Pipes| #A400 | - | Atlas/650SS, original U.S. 1 5/8 dia. out of stock. |
| #A405 | - | Dunstall Style Swept Backs - 1 1/2 dia. |
Mufflers - The 650ss, Atlas, early Commando and most late Dommies used the same mufflers, all with 1 5/8 inlets regardless of the diameter of the exhaust pipes main body. None of the recent copies have been quite the correct shape but these are the best we have found. - #A407
HYBREDS
P11 Exhaust Pipes, High Level. - #A420P11 Mufflers, European style. - #M412
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