NORTON EXHAUST COMPONENTS
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 750's and you must either switch to the 06-3555 locking rings (850 style 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.
Exhaust Pipes
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Mufflers (pair)
| #C4020 | - | Peashooters - Seamless, 1 3/8" dia. - $269.00 |
| #C4021 | - | Peashooters - Semi Seamless, 1 3/8" dia. - $219.00 |
| #C4022 | - | Peashooters - EMGO with seams (as cheap as it get) 1 3/8"dia. - $149.00 |
| #C4031 | - | Big Bore Peashooters - Seamless, 1 1/2" dia. - $279.00 |
| #C4028 | - | Free Flowing copy of MK3 with end cap in chrome not black - 269.00 |
| #C4041 | - | Interstate Mufflers - $299.00 |
| #C4062 | - | "S" Mufflers.- $289.00 |
Exhaust Accessories
| 06-2412 | - | Tab Washer - $2.40 |
| 06-2464 | - | Lockring - Early 750 (long) pattern for unbalanced pipes - Chromed Brass - $31.00 |
| 06-2464/1 | - | Lockring - Early 750 (long) pattern for unbalanced pipes - Unplated Brass - $30.95 |
| 06-3555 | - | Lockring - Late 750 (long) pattern for unbalanced pipes - Chromed Brass - $49.50 |
| 06-3555P | - | Lockring - Late 750 (long) pattern for unbalanced pipes - Unplated Brass - $44.85 |
| 06-3988 | - | Lockring - 850 (short) pattern for balanced pipes - Chromed Brass - $49.65 |
| 06-3990 | - | Collets set pre-MK3 850 - $12.60 |
| 06-3995 | - | Exhaust Sealing Washer - $1.15 |
| 06-5259 | - | Seating Spherical, MK3 - $5.20 |
| 06-5260 | - | Collet, MK3 - $7.80 |
| 06-1314 | - | Heat Shield Set for "S" System (4 piece) - $90.50 |
| #C4025 | - | Stainless Roadster Muffler Brackets (6) - Replaces 06-1720/21/22 - $44.95 |
| #C4065 | - | Chrome plated mounting bracket (Dog Leg) for "S" system mufflers - $54.95 |
| #C4066 | - | Stainless steel mounting bracket (Dog Leg) for "S" system mufflers - $76.95 |
Muffler Clamps - Use a clamp one size larger than the exhaust pipe. Ex. - A 1 1/2" pipe needs a 1 5/8" clamp.
| #M4310 | - | 1 1/2" I.D. Chrome - $8.50 |
| #M4320 | - | 1 5/8" I.D. Chrome - $8.50 |
| #M4330 | - | 1 3/4" I.D. Chrome - $9.90 |
| #M4330 | - | 1 3/4" I.D. Chrome - $5.50 |
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 Dominator's, but modified to match the port angle of it's newly designed head. The Atlas exhaust pipes were interchangeable with the 650's, 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| #A4000 | - | Atlas/650SS, original U.S. 1 5/8"dia. - out of stock. |
| #A4050 | - | Dunstall Style Swept Backs are not currently available nor do we have a date when they will be. |
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. Several aftermarket and an Andover version are now available. Call for details.
HYBRIDS
P11 Exhaust Pipes, High Level. - #A4200 - $179.00P11 Mufflers, European style. - #M4120 - $189.00
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